def get_max_cl(Re, r):
"""
Analyze airfoil at a fixed Re,
changing aoa from 10 to 15 by 0.1
and returns cl, cd, aoa that makes maximum cl
"""
xf = XFoil()
if r <= 0.175:
xf.airfoil = naca6409
else:
xf.airfoil = naca2412
xf.Re = Re
xf.Re = Re
xf.max_iter = 200
xf.n_crit = 9.00
xf.xtr = [1.00, 1.00]
xf.M = 0
a_seq, cl_seq, cd_seq, cm_seq, cp_seq = xf.aseq(10, 15, 0.1)
# ignore nan by making it 0
cl_seq = np.nan_to_num(cl_seq)
# find the maximum cl
cl_maxi = np.max(cl_seq)
# index of the maximum cl
idx = np.argmax(cl_seq)
return round(cl_maxi, 2), round(a_seq[idx], 2), round(cd_seq[idx], 2)
def xfoil():
x = request.args.get('x')
y = request.args.get('y')
Re = float(request.args.get('Re'))
M = float(request.args.get('M'))
Alpha = float(request.args.get('Alpha'))
x = x.split()
y = y.split()
ctrlX = [float(ele) for ele in x]
ctrlY = [float(ele) for ele in y]
#bezierX, bezierY = airfoil(ctrlX, ctrlY, 16)
xf = XFoil()
xf.airfoil = Airfoil(np.array(ctrlX), np.array(ctrlY))
xf.repanel()
xf.Re = Re
xf.M = 0
xf.max_iter = 100
aero = xf.a(Alpha)
xcp, cp = xf.get_cp_distribution()
y = savgol_filter(cp, 5, 2)
for i in range(30):
y = savgol_filter(y, 5, 2)
LD = aero[0] / aero[1]
vol = PolyArea(ctrlX, ctrlY)
return jsonify(result=str(round(aero[0], 3)) + " " +
str(round(aero[1], 3)) + " " + str(round(aero[2], 3)) +
" " + str(round(LD, 2)) + " " + str(round(vol, 3)),
xcp=xcp.tolist(),
cp=y.tolist())
def get_cls(coords):
xf = XFoil()
xf.print = False
cl_s = []
for coord in coords:
cl = get_cl(coord, xf)
cl_s.append(cl)
return np.array(cl_s)
def evaluate(self, individual):
ratios = self.decoder(individual, self.code_division)
datlist_list = [fc.read_datfile(file) for file in self.datfiles]
datlist_shaped_list = [
fc.shape_dat(datlist) for datlist in datlist_list
]
newdat = fc.interpolate_dat(datlist_shaped_list, ratios)
foil_para = fc.get_foil_para(newdat)
datx = np.array([ax[0] for ax in newdat])
daty = np.array([ax[1] for ax in newdat])
newfoil = Airfoil(x=datx, y=daty)
mt, mta, mc, mca, s = foil_para
penalty = 0
for g, p in zip(self.gs, self.penalties):
if (not g):
penalty += p
xf = XFoil()
xf.airfoil = newfoil
xf.Re = self.re
xf.max_iter = 60
print(self.assigns, self.datfiles)
scope = locals()
exec(self.assigns, scope)
#----------------------------------
#目的値
#----------------------------------
try:
obj1, obj2, obj3 = [eval(o) for o in self.Os]
except IndexError as e:
obj1, obj2, obj3 = [1.0] * self.NOBJ
traceback.print_exc()
except SyntaxError as e:
raise ValueError("invalid objection")
if (np.isnan(obj1) or obj1 > 1):
obj1 = 1
if (np.isnan(obj2) or obj2 > 1):
obj2 = 1
if (np.isnan(obj3) or obj3 > 1):
obj3 = 1
obj1 += penalty
obj2 += penalty
obj3 += penalty
return [obj1, obj2, obj3]
def initialize(self):
super().initialize()
self.options.declare("print", default=False, types=bool)
xf = XFoil()
xf.print = False
self.options.declare("_xf", default=xf, types=XFoil, allow_none=True)
self.options.declare("_pool",
default=ThreadPool(processes=1),
types=ThreadPool,
allow_none=True)
self.recording_options["options_excludes"] = ["_xf", "_pool"]
def get_torque(angular_velocity):
torque_sum_small = 0
torque_sum_large = 0
w = angular_velocity
for key, value in dfdict.items():
value["blade_velocity"] = value['r_position'] * w
value["relative_velocity"] = round(
math.sqrt(value["blade_velocity"]**2 + value["wind_velocity"]**2),
2)
value["arctan"] = math.degrees(
math.atan2(value["wind_velocity"], value["blade_velocity"]))
aoa = round(value["arctan"] - value["pitch_angle"], 2)
value["angle_of_attack"] = aoa
re_n = round(
value["relative_velocity"] * value["chord_length"] / 0.00001511, 3)
value["Reynolds_number"] = re_n
xf = XFoil()
if key < 13:
xf.airfoil = naca6409
else:
xf.airfoil = naca2412
xf.Re = re_n
xf.max_iter = 100
xf.n_crit = 9.00
xf.xtr = [1.00, 1.00]
xf.M = 0
value["Cl"], value["Cd"], value["Cm"], value["Cp"] = xf.a(aoa)
force_reference = 0.5 * density * value["relative_velocity"]**2
if math.isnan(value["Cl"]):
value["torque"] = 0
else:
lift = value["Cl"] * force_reference * 0.0125 * value[
'chord_length']
drag = value["Cd"] * force_reference * 0.0125 * value[
'chord_length']
value["torque"] = value["r_position"] * (
lift * math.sin(math.radians(value["pitch_angle"])) -
drag * math.cos(math.radians(value["pitch_angle"])))
if key < 13:
torque_sum_small += value["torque"]
else:
pass
if key > 0:
torque_sum_large += value["torque"]
else:
pass
df2 = pd.DataFrame.from_dict(dfdict, orient="index")
df_collection.append(df2)
torque_sum_avg = 0.5 * (torque_sum_small + torque_sum_large)
return torque_sum_avg
def __init__(self):
self.xf = XFoil()
self.min_action = np.array([0.1, 0.05, 1.0, 0.05, 0.4, 1.0, 0.0])
self.max_action = np.array([0.4, 0.4, 3.0, 3.0, 8.0, 10.0, 10.0])
''' 測試開始, 可省略測試'''
# (.01, .4), (.05, .4), (1, 3), (0.05, 3), (0.4, 8), (1, 10)
# self.xf.airfoil = naca0012
# k = [0.08813299, 0.28250898, 2.80168427, 2.56204214, 1.48703742, 8.53824561]
# k = [0.34422, 0.38976, 1.1, 2.9989, 1.6071, 9.9649]
k = [0.1584, 0.1565, 2.1241, 1.8255, 11.6983, 3.827] # org
# k = [0.1784, 0.1365, 2.1201, 1.8057, 3.8071, 11.7009]
# k = [0.1472, 0.1638, 2.1041, 1.8156, 3.8141, 11.6808]
# k = [0.1784, 0.1365, 2.1201, 1.8057, 3.8071, 11.7009]
# k = [0.1783, 0.1366, 2.1283, 1.8073, 3.8325, 11.7176]
# k = [0.25840, 0.14474, 2.22410, 1.92550, 11.59984, 3.92623]
airfoil = construct_airfoil(*k)
x, y = get_coords_plain(airfoil._spline(100))
self.xf.airfoil = Airfoil(x=x, y=y)
# test_airfoil = NACA4(2, 3, 15)
# a = test_airfoil.max_thickness()
# self.xf.airfoil = test_airfoil.get_coords()
self.xf.Re = 1e6
self.xf.M = 0.04
self.xf.print = False
cl, cd, cm, cp = self.xf.a(9)
x = np.array(x, dtype='float32')
y = np.array(y, dtype='float32')
reward = cl / cd
# reward = cl
''' 測試結束, 可省略測試'''
# cl, cd, cm, cp = self.xf.a(12.2357)
# self.action_space = spaces.Discrete(30)
self.action_space = spaces.Box(self.min_action,
self.max_action,
dtype=np.float32)
# high = np.array([100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0])
high = np.array([
100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0,
100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0,
100.0, 100.0, 100.0, 100.0
])
self.observation_space = spaces.Box(
-high, high, dtype=np.float32) #創建state大小(25,f22機翼,b3cl.cd.aoa)
self.seed()
self.viewer = None
self.state = None
self.steps_beyond_done = None
def cl_visc_analysis(airfoil, cl_i, cl_f, cl_step, re, mach, max_iter, id):
"""Viscous analysis over range of lift coefficients."""
# Initializes airfoil and assigns NACA
xf = XFoil()
xf.naca(airfoil)
xf.max_iter = max_iter
xf.Re = re
xf.M = mach
# Collects values
a, cl, cd, cm, cp = xf.cseq(cl_i, cl_f, cl_step)
x, cp_0 = xf.get_cp_distribution()
# Plots all the data
plot(a, cl, cd, cm, cp, x, cp_0, id)
def alpha_visc_analysis(airfoil, alpha_i, alpha_f, alpha_step, re, mach,
max_iter, id):
"""Viscous analysis over range of angle of attacks."""
# Initializes airfoil and assigns NACA
xf = XFoil()
xf.naca(airfoil)
xf.max_iter = max_iter
xf.Re = re
xf.M = mach
# Collects values
a, cl, cd, cm, cp = xf.aseq(alpha_i, alpha_f, alpha_step)
x, cp_0 = xf.get_cp_distribution()
# Plots all the data
plot(a, cl, cd, cm, cp, x, cp_0, id)
def cl_inv_analysis(airfoil, cl_i, cl_f, cl_step, max_iter, id):
"""Inviscid analysis over range of angle of attacks."""
# Initializes airfoil and assigns NACA
xf = XFoil()
xf.naca(airfoil)
xf.max_iter = max_iter
# Collects values
a, cl, cd, cm, cp = xf.cseq(cl_i, cl_f, cl_step)
x, cp_0 = xf.get_cp_distribution()
# Plots all the data
plot(a, cl, cd, cm, cp, x, cp_0, id)
def get_cl(coord, xf=None, angle=5):
if xf is None:
xf = XFoil()
xf.print = False
xf.Re = 3e6
xf.max_iter = 100
datax, datay = coord.reshape(2, -1)
xf.airfoil = Airfoil(x=datax, y=datay)
c = xf.a(angle)
cl= c[0]
return cl
def getCoefficients(naca,
reynolds=1e6,
iterations=20,
angle=10,
angle_step=.5):
xf = XFoil()
xf.naca(f"{naca:04d}")
xf.Re = reynolds
xf.max_iter = 20
a, cl, cd, cm, cp = xf.aseq(0, angle, .5)
ratio = cl / cd
max_idx = np.nanargmax(ratio)
return (ratio[max_idx], a[max_idx]), a, cl, cd, max_idx
def evaluate(self,individual):
DELTA = 1e10
#----------------------------------
#遺伝子に基づいて新翼型を生成
#----------------------------------
#遺伝子に基づきスプライン翼型を作成
x = individual[:int(len(individual)/2)]
x.insert(0,1.0)
x.insert(int(len(x)/2)+1,0.0)
x.append(1.0)
y = individual[int(len(individual)/2):]
if not (all([u - d > 0 for u, d in zip(y[:int(len(y)/2)], y[int(len(y)/2):])]) or all([u - d < 0 for u, d in zip(y[:int(len(y)/2)], y[int(len(y)/2):])])):
print("crossed")
return [DELTA*10]*self.NOBJ
y.insert(0,0.0)
y.insert(int(len(y)/2)+1,0.0)
y.append(0.0)
newdat = fc.spline_foil(x, y, 200)
shape_dat = fc.shape_dat([[a, b] for a, b in zip(newdat[0][::-1], newdat[1][::-1])])
#翼型の形に関する情報を取得する
foil_para = fc.get_foil_para(shape_dat)
mt, mta, mc, mca, s, crossed, bd, bt, bc, smooth, td = foil_para
# mt: 最大翼厚(百分率)
# mta: 最大翼厚位置(百分率)
# mc: 最大キャンバー(百分率)
# mca: 最大きゃんばー位置(百分率)
# s: 翼型の下面における、最大y座標-最小y座標
# crossed: 翼型が交差しているならTrue,それ以外ならFalse
# bd: 翼型の粗さ(大きいほど粗い)
# bt: 翼厚分布の粗さ(大きいほど粗い)
# bc: キャンバー分布の粗さ(大きいほど粗い)
# smooth: 無視
# td: 翼厚分布
if crossed:
print("crossed_a")
return [DELTA*10]*self.NOBJ
else:
print("hi_a")
#新しい翼型をAerofoilオブジェクトに適用
datx = np.array(newdat[0][::-1])
daty = np.array(newdat[1][::-1])
newfoil = Airfoil(x = datx, y = daty)
#翼型の形に関する拘束条件
penalty = 0
if not all([t >= 0.0035 for t in td[10:80]]):
penalty += 100 * (sum([abs(t - 0.0035)*10 for t in td[15:85] if t - 0.0035 < 0]))
if not all([t <= 0.015 for t in td[:15]]):
penalty += 100 * (sum([abs(t - 0.015)*10 for t in td[:15] if t > 0.015]))
if mta > 0.4:
penalty += 100 * (mta - 0.4)
if mc < 0.0:
penalty += 100 * (-mc)
if datx[0] > 1.002 or datx[0] < 0.998:
print("invalid foil")
return [DELTA*10]*self.NOBJ
#----------------------------------
#新翼型の解析
#----------------------------------
try:
xf = XFoil()
#レイノルズ数の設定
xf.airfoil = newfoil
xf.Re = self.re
xf.print = False
xf.max_iter = 40
#xf.polar = "polar" + id
#境界要素法計算時1ステップにおける計算回数
#xf.repanel(n_nodes = 180)
#計算結果格納
#result = xf.OneAlpha()
cl, cd, cm, cp = xf.a(5.0)
#----------------------------------
#目的値
#----------------------------------
if cl >= 0:
obj1 = 1/cl
else:
obj1 = self.delta
obj2 = cd
except Exception as e:
obj1,obj2=[DELTA]*self.NOBJ
traceback.print_exc()
if (np.isnan(obj1)):
obj1 = DELTA
if (np.isnan(obj2)):
obj2 = DELTA
return [obj1 + penalty, obj2 + penalty]
a_p_a = a_p
v_r = math.sqrt(v_1 ** 2 * (1 - a_max) ** 2 + prop_omega ** 2 * r ** 2 * (a_p_max - 1) ** 2)
# ITERATION & CALL TO XFOIL
c_l = cl_i
if
c = (a_max * 8 * pi * r * math.sin(phi) ** 2) / ((1 - a_max) * prop_blades * c_l * math.cos(phi))
re = (v_r * c) / (nu_mars)
# XFOIL #######
from xfoil import XFoil
xf = XFoil()
# Import an airfoil
from xfoil.test import XXXXX
xf.airfoil = XXXXX
# Setting up the analysis parameters
xf.Re = re
xf.max_iter = 100
xf.M = 0.7
# Obtaining the angle of attack, lift coefficient, drag coefficient and momentum coefficient of the airfoil
a, cl, cd, cm = xf.aseq(0, 30, 0.5)
def analyze_airfoil(x,
y_u,
y_l,
cl,
rey,
mach=0,
xf=None,
pool=None,
show_output=False):
"""
Analyze an airfoil at a given lift coefficient for given Reynolds and Mach numbers using XFoil.
Parameters
----------
x : array_like
Airfoil x-coordinates
y_u, y_l : array_like
Airfoil upper and lower curve y-coordinates
cl : float
Target lift coefficient
rey, mach : float
Reynolds and Mach numbers
xf : XFoil, optional
An instance of the XFoil class to use to perform the analysis. Will be created if not given
pool : multiprocessing.ThreadPool, optional
An instance of the multiprocessing.Threadpool class used to run the xfoil_worker. Will be created if not given
show_output : bool, optional
If True, a debug string will be printed after analyses. False by default.
Returns
-------
cd, cm : float or np.nan
Drag and moment coefficients of the airfoil at specified conditions, or nan if XFoil did not run successfully
"""
# If the lower and upper curves swap, this is a bad, self-intersecting airfoil. Return 1e27 immediately.
if np.any(y_l > y_u):
return np.nan
else:
clean_xf = False
if xf is None:
xf = XFoil()
xf.print = show_output
clean_xf = True
clean_pool = False
if pool is None:
pool = ThreadPool(processes=1)
clean_pool = True
xf.airfoil = Airfoil(x=np.concatenate((x[-1:0:-1], x)),
y=np.concatenate((y_u[-1:0:-1], y_l)))
xf.Re = rey
xf.M = mach
xf.max_iter = 100
xf.n_crit = 0.1
cd, cm = pool.apply(xfoil_worker, args=(xf, cl))
if clean_xf:
del xf
if clean_pool:
del pool
return cd, cm, None if clean_xf else xf
ax.yaxis.set_minor_locator(ticker.MultipleLocator(mult_y / 5 * Y_0))
if (grd == True):
ax.grid(b=True, which='major', axis='both')
else:
ax.grid(b=False, which='major', axis='both')
if (minorgrd == True):
ax.grid(b=True, which='minor', axis='both')
else:
ax.grid(b=False, which='minor', axis='both')
if (x_lim != None):
ax.set_xlim(x_lim)
if (y_lim != None):
ax.set_ylim(y_lim)
return ax
"""#########################################################################"""
from xfoil.test import naca0012
from xfoil import XFoil
xf = XFoil()
xf.airfoil = naca0012
xf.Re = 1e5
xf.max_iter = 20
a, cl, cd, cm, co = xf.aseq(-20, 20, 1)
fig, axarr = plt.subplots(1, 1, figsize=(6, 4))
axarr.plot(a, cl)
plt.show()
#!/usr/bin/python3
from xfoil import XFoil
import matplotlib.pyplot as plt
xf = XFoil()
xf.load("revclarky.dat")
xf.Re = 1e5
xf.M = 0
xf.max_iter = 100
a, cl, cd, cm, cp = xf.aseq(-2, 2, 0.5)
plt.plot(a, cl)
plt.title("alfa vs cl")
plt.show()
#plt.plot(xf.airfoil.x,xf.airfoil.y)
#plt.axis('equal')
#plt.show()
def saveResults():
drag = Aerofoils_obj.cd * 0.5 * rho * (velocity**2) * mac * span
datarow = [span, chord, drag]
with open(r'viscous_drag_landscape_results.csv', 'a', newline='') as f:
writer = csv.writer(f)
writer.writerow(datarow)
rho = 1.1685
velocity = 41.6667
g = 9.81
reynolds_div_chord = 2794120
mass = 100
xf = XFoil()
xf.max_iter = 100
print("Max iterations: {0}\nMass: {1}Kg".format(xf.max_iter, mass))
START_CHORD = 0.1
END_CHORD = 0.3
CHORD_POINTS_PER_METRE = 100
START_SPAN = 8
END_SPAN = 10
SPAN_POINTS_PER_METRE = 10
chord_points = int((END_CHORD - START_CHORD) * CHORD_POINTS_PER_METRE)
chord_increment = float((END_CHORD - START_CHORD) / chord_points)
from xfoil import XFoil
import matplotlib.pyplot as plt
xf = XFoil()
xf.load("clarky.dat")
plt.plot(xf.airfoil.x, xf.airfoil.y)
plt.axis('equal')
plt.show()
aoa_h = 34
fig, ax = plt.subplots(1, 1, figsize=(9, 8))
klist = [1]
for k in range(1):
print(k)
x = aifoils[k]['x'].values
y = aifoils[k]['y'].values
ang_low = -32
ang_high = 32
ang_spacing = 2
xfc = XFoil()
xfc.airfoil = Airfoil(x, y)
xfc.Re = re[k]
xfc.max_iter = 40
ac, clc, cdc, cmc, cpminc = xfc.aseq(ang_low, ang_high, ang_spacing)
df = aifoils_cfd[k].where(aifoils_cfd[k]['alpha [deg]'] >= aoa_l)
df = df.where(aifoils_cfd[k] <= aoa_h)
df = df.dropna() #.values
cl_panel = []
cdp_panel = []
for aoa in df['alpha [deg]']:
data_xy = aifoils[k].values
CL, CDP, Cp, pp = panel(data_xy[:, :], alfader=aoa)
#1. Define Aero and Structural grid
Nel_struct = 6 # Number of elements per surface in struct grid
Nel_aero = 30 # Number of elements per surface in aero grid
Xwing_aero = Aero.NACA4(1.0, 0.12, 0.03, 0.4,
Nel_aero) #create aero grid nodes
Xwing_struct = Aero.NACA4(1.0, 0.12, 0.03, 0.4,
Nel_struct) #create aero grid nodes
Xwing_aero1 = Aero.NACA4(1.0, 0.13, 0.03, 0.3,
Nel_aero) #create aero grid nodes
Xwing_struct1 = Aero.NACA4(1.0, 0.13, 0.03, 0.3,
Nel_struct) #create aero grid nodes
xf = XFoil()
aa = Xwing_aero1[:, 0]
b = Xwing_aero1[:, 1]
archive3 = open('lt.txt', 'w')
for line in range(len(aa)):
aux = [aa[line], b[line]]
string = str(aux).replace("[",
" ").replace(",",
" ").replace("]",
" ").replace("'", " ")
archive3.writelines(string + '\n')
aux.clear
# Calculates the aerodynamic coeff using Xfoil
archive3.close()
def evaluate(individual):
global code_division
#----------------------------------
#遺伝子にも続いて新翼型を生成
#----------------------------------
#遺伝子をデコード
ratios = decoder(individual, code_division)
#遺伝子に基づき翼型を混合して、新しい翼型を作る
datlist_list = [fc.read_datfile(file) for file in datfiles]
datlist_shaped_list = [fc.shape_dat(datlist) for datlist in datlist_list]
newdat = fc.interpolate_dat(datlist_shaped_list,ratios)
#翼型の形に関する情報を取得する
#foilpara == [最大翼厚、最大翼厚位置、最大キャンバ、最大キャンバ位置、S字の強さ]
foil_para = fc.get_foil_para(newdat)
#新しい翼型をAerofoilオブジェクトに適用
datx = np.array([ax[0] for ax in newdat])
daty = np.array([ax[1] for ax in newdat])
newfoil = Airfoil(x = datx, y = daty)
mt, mta, mc, mca, s = foil_para
#----------------------------------
#翼の形に関する拘束条件
#----------------------------------
penalty = 0
print('===================')
if(mc<0):
print("out of the border")
print("reverse_cmaber")
penalty -= mc
if(mt<0.08):
print("out of the border")
print("too_thin")
penalty += 0.08-mt
if(mt>0.11):
print("out of the border")
print("too_fat")
penalty += mt-0.11
#if(foil_para[4]>0.03):
# print("out of the border")
# print("peacock")
# print('===================')
# return (1.0+(foil_para[4]-0.03),)*NOBJ
if(mta<0.23):
print("out of the border")
print("Atama Dekkachi!")
penalty += 0.23 - mta
if(mta>0.3):
print("out of the border")
print("Oshiri Dekkachi!")
penalty += mta - 0.3
#----------------------------------
#新翼型の解析
#----------------------------------
xf = XFoil()
xf.airfoil = newfoil
#レイノルズ数の設定
xf.Re = 1.5e5
#境界要素法計算時1ステップにおける計算回数
xf.max_iter = 60
#座標整形
xf.repanel(n_nodes = 300)
xf.print = False
#計算結果格納
a, cl, cd, cm, cp = xf.cseq(0.4, 1.1, 0.1)
lr = [l/d for l, d in zip(cl,cd)]
#----------------------------------
#目的値
#----------------------------------
try:
#揚抗比の逆数を最小化
obj1 = 1/lr[1]
#揚抗比のピークを滑らかに(安定性の最大化)
maxlr = max(lr)
maxlr_index = lr.index(maxlr)
obj2 = abs(maxlr - lr[maxlr_index+1])
#下面の反りを最小化(製作再現性の最大化)
obj3 = foil_para[4]
except Exception as e:
obj1,obj2,obj3=[1.0]*NOBJ
traceback.print_exc()
if (np.isnan(obj1) or obj1 > 1):
obj1 = 1
if (np.isnan(obj2) or obj2 > 1):
obj2 = 1
if (np.isnan(obj3) or obj3 > 1):
obj3 = 1
obj1 += penalty
obj2 += penalty
obj3 += penalty
print("individual",individual)
print("evaluate",obj1,obj2,obj3)
print("max_thickness",foil_para[0])
print("at",foil_para[1])
print("max_camber",foil_para[2])
print("at",foil_para[3])
print("S",foil_para[4])
print('===================')
return [obj1, obj2, obj3]
def evaluate(self, individual):
#解析が発散した際の評価値
DELTA = 1e10
#----------------------------------
#遺伝子に基づいて新翼型を生成
#----------------------------------
#遺伝子をデコード
ratios = self.decoder(individual, self.code_division)
#遺伝子に基づき翼型を混合して、新しい翼型を作る
datlist_list = [fc.read_datfile(file) for file in self.datfiles]
datlist_shaped_list = [
fc.shape_dat(datlist) for datlist in datlist_list
]
newdat = fc.interpolate_dat(datlist_shaped_list, ratios)
#翼型の形に関する情報を取得する
mt, mta, mc, mca, s, crossed, bd, bt, bc, smooth, td = fc.get_foil_para(
newdat)
#新しい翼型をAerofoilオブジェクトに適用
datx = np.array([ax[0] for ax in newdat])
daty = np.array([ax[1] for ax in newdat])
newfoil = Airfoil(x=datx, y=daty)
#----------------------------------
#翼の形に関する拘束条件
#----------------------------------
penalty = 0
#キャンバに関する拘束条件
if (mc < 0):
penalty -= mc
#最大翼厚に関する拘束条件
if (mt < 0.08):
penalty += 0.08 - mt
if (mt > 0.11):
penalty += mt - 0.11
#最大翼厚位置に関する拘束条件
if (mta < 0.23):
penalty += 0.23 - mta
if (mta > 0.3):
penalty += mta - 0.3
#----------------------------------
#新翼型の解析
#----------------------------------
xf = XFoil()
xf.airfoil = newfoil
#レイノルズ数の設定
xf.Re = self.re
#境界要素法計算時1ステップにおける計算回数
xf.max_iter = 60
xf.print = False
#計算結果格納
a, cl, cd, cm, cp = xf.cseq(0.4, 1.1, 0.1)
#----------------------------------
#目的値
#----------------------------------
try:
#揚抗比の逆数を最小化
obj1 = 1 / lr[1]
#揚抗比のピークを滑らかに(安定性の最大化)
maxlr = max(lr)
maxlr_index = lr.index(maxlr)
obj2 = abs(maxlr - lr[maxlr_index + 1])
#下面の反りを最小化(製作再現性の最大化)
obj3 = s
except Exception as e:
obj1, obj2, obj3 = [DELTA] * self.NOBJ
traceback.print_exc()
if (np.isnan(obj1) or obj1 > 1):
obj1 = DELTA
if (np.isnan(obj2) or obj2 > 1):
obj2 = DELTA
if (np.isnan(obj3) or obj3 > 1):
obj3 = DELTA
obj1 += penalty
obj2 += penalty
obj3 += penalty
return [obj1, obj2, obj3]
def feature_xfoil(cst_u,
cst_l,
t,
Minf: float,
Re,
AoA,
n_crit=0.1,
fname='feature-xfoil.txt'):
'''
Evaluate by xfoil and extract features.
Inputs:
---
cst-u, cst-l: list of upper/lower CST coefficients of the airfoil. \n
t: airfoil thickness or None \n
Minf: free stream Mach number for wall Mach number calculation \n
Re, AoA (deg): flight condition (s), float or list, for Xfoil \n
n_crit: critical amplification ratio for transition in xfoil \n
fname: output file name. If None, then no output \n
### Dependencies: cst-modeling3d, xfoil
'''
from cst_modeling.foil import cst_foil
from xfoil import XFoil
from xfoil.model import Airfoil
#TODO: Build foil
#! 201 is the maximum amount of points that xfoil can handle
#! tail = 0.001 is to avoid point overlap
xx, yu, yl, t0, R0 = cst_foil(201, cst_u, cst_l, x=None, t=t, tail=0.001)
#! xfoil do not support leading edge of (0,0) on both upper and lower surface
x = np.array(list(reversed(xx[1:])) + xx[1:])
y = np.array(list(reversed(yu[1:])) + yl[1:])
foil = Airfoil(x, y)
#TODO: Xfoil
xf = XFoil()
xf.print = False
xf.airfoil = foil
xf.max_iter = 40
#* Transition by power law
xf.n_crit = n_crit
#TODO: Xfoil calculation
if not isinstance(Re, list):
Re = [Re]
AoA = [AoA]
n = len(Re)
for i in range(n):
xf.reset_bls()
if Re[i] is not None:
xf.Re = Re[i]
cl, cd, cm, cp = xf.a(AoA[i])
x, cp = xf.get_cp_distribution()
print(xf.Re, AoA[i], cl)
#* Extract features
fF = PhysicalXfoil(Minf, AoA[i], Re[i])
fF.setdata(x, y, cp)
fF.extract_features()
#* Output
if fname is None:
continue
if i == 0:
f = open(fname, 'w')
else:
f = open(fname, 'a')
f.write('\n')
f.write('%10s %15.6f \n' % ('Minf', Minf))
f.write('%10s %15.6f \n' % ('AoA', AoA[i]))
f.write('%10s %15.6f \n' % ('Re', Re[i] / 1e6))
f.write('%10s %15.6f \n' % ('CL', cl))
f.write('%10s %15.6f \n' % ('Cd', cd))
f.write('%10s %15.6f \n' % ('Cm', cm))
f.close()
fF.output_features(fname=fname, append=True)
from xfoil import XFoil from xfoil.test import naca0012 xf = XFoil() xf.airfoil = naca0012 xf.Re = 1e6 xf.max_iter = 40 a, cl, cd, cm, co = xf.aseq(-20, 20, 0.5)
def total_dict(angular_velocity):
torque_sum = 0
w = angular_velocity
for key, value in dfdict.items():
value["blade_velocity"] = value['r_position'] * w
value["relative_velocity"] = round(
math.sqrt(value["blade_velocity"]**2 + value["wind_velocity"]**2),
2)
value["arctan"] = math.degrees(
math.atan2(value["wind_velocity"], value["blade_velocity"]))
aoa = round(value["arctan"] - value["pitch_angle"], 1)
value["angle_of_attack"] = aoa
re_n = round(value["relative_velocity"] * value["chord_length"] /
0.00001511)
value["Reynolds_number"] = re_n
xf = XFoil()
if key < 13:
xf.airfoil = naca6409
else:
xf.airfoil = naca2412
xf.Re = round(re_n / 100) * 100
xf.max_iter = 200
xf.n_crit = 9.00
xf.xtr = [1.00, 1.00]
xf.M = 0
c_l, c_d, c_m, c_p = xf.a(aoa)
force_reference = 0.5 * density * value["relative_velocity"]**2
if math.isnan(c_l):
pass
else:
value["Cl"] = c_l
value["Cd"] = c_d
value["Cm"] = c_m
value["Cp"] = c_p
lift = c_l * force_reference * 0.0125 * value['chord_length']
drag = c_d * force_reference * 0.0125 * value['chord_length']
value["lift"] = lift
value["drag"] = drag
# value["torque"] = value["r_position"] * lift * math.sin(math.radians(value["pitch_angle"]))
torque = value["r_position"] * (
lift * math.sin(math.radians(value["pitch_angle"])) -
drag * math.cos(math.radians(value["pitch_angle"])))
value["torque"] = torque
torque_sum += torque
xf.reset_bls()
# detailed_df = pd.DataFrame.from_dict(dfdict, orient="index")
# print(detailed_df)
print(torque_sum, angular_velocity)
return dfdict, torque_sum
def evaluate(self,individual):
#----------------------------------
#遺伝子に基づいて新翼型を生成
#----------------------------------
#遺伝子をデコード
ratios = self.decoder(individual, self.code_division)
#遺伝子に基づき翼型を混合して、新しい翼型を作る
datlist_list = [fc.read_datfile(file) for file in self.datfiles]
datlist_shaped_list = [fc.shape_dat(datlist) for datlist in datlist_list]
newdat = fc.interpolate_dat(datlist_shaped_list,ratios)
#翼型の形に関する情報を取得する
#foilpara == [最大翼厚、最大翼厚位置、最大キャンバ、最大キャンバ位置、S字の強さ]
foil_para = fc.get_foil_para(newdat)
#新しい翼型をAerofoilオブジェクトに適用
datx = np.array([ax[0] for ax in newdat])
daty = np.array([ax[1] for ax in newdat])
newfoil = Airfoil(x = datx, y = daty)
mt, mta, mc, mca, s = foil_para
#----------------------------------
#翼の形に関する拘束条件
#----------------------------------
"""
penalty = 0
for g, p in zip(self.gs, self.penalties):
if(not g):
penalty += p
"""
penalty = 0
print('===================')
if(mc<0):
print("out of the border")
print("reverse_cmaber")
penalty -= mc
if(mt<0.08):
print("out of the border")
print("too_thin")
penalty += 0.08-mt
if(mt>0.11):
print("out of the border")
print("too_fat")
penalty += mt-0.11
#if(foil_para[4]>0.03):
# print("out of the border")
# print("peacock")
# print('===================')
# return (1.0+(foil_para[4]-0.03),)*NOBJ
if(mta<0.23):
print("out of the border")
print("Atama Dekkachi!")
penalty += 0.23 - mta
if(mta>0.3):
print("out of the border")
print("Oshiri Dekkachi!")
penalty += mta - 0.3
#----------------------------------
#新翼型の解析
#----------------------------------
xf = XFoil()
xf.airfoil = newfoil
#レイノルズ数の設定
xf.Re = self.re
#境界要素法計算時1ステップにおける計算回数
xf.max_iter = 60
#print("hi")
#print(vars)
#scope = locals()
#var0, var1, var2, var3, var4, var5, var6, var7 = [0 if var == None or var == '' else eval(var,scope) for var in self.vars]
#計算結果格納
a, cl, cd, cm, cp = xf.cseq(0.4, 1.1, 0.1)
lr = [l/d for l, d in zip(cl,cd)]
#----------------------------------
#目的値
#----------------------------------
"""
try:
obj1,obj2,obj3 = [eval(o) for o in Os]
except Exception as e:
obj1,obj2,obj3=[1.0]*self.NOBJ
traceback.print_exc()
"""
try:
#揚抗比の逆数を最小化
obj1 = 1/lr[1]
#揚抗比のピークを滑らかに(安定性の最大化)
maxlr = max(lr)
maxlr_index = lr.index(maxlr)
obj2 = abs(maxlr - lr[maxlr_index+1])
#下面の反りを最小化(製作再現性の最大化)
obj3 = s
except Exception as e:
obj1,obj2,obj3=[1.0]*self.NOBJ
traceback.print_exc()
if (np.isnan(obj1) or obj1 > 1):
obj1 = 1
if (np.isnan(obj2) or obj2 > 1):
obj2 = 1
if (np.isnan(obj3) or obj3 > 1):
obj3 = 1
obj1 += penalty
obj2 += penalty
obj3 += penalty
return [obj1, obj2, obj3]
if not use_dataset:
npz = np.load(input_path)
labels = npz[npz.files[0]]
coords = npz[npz.files[1]]
else:
perfs_npz = np.load("./dataset/standardized_perfs.npz")
coords_npz = np.load("./dataset/standardized_coords.npz")
coords = coords_npz[coords_npz.files[0]]
coord_mean = coords_npz[coords_npz.files[1]]
coord_std = coords_npz[coords_npz.files[2]]
perfs = perfs_npz[perfs_npz.files[0]]
perf_mean = perfs_npz[perfs_npz.files[1]]
perf_std = perfs_npz[perfs_npz.files[2]]
xf = XFoil()
xf.print = False
cnt = 0
print("start calculating!")
start = time.time()
coords = coords*coord_std+coord_mean if use_dataset else coords
for label, coord in zip(labels, coords):
cl = get_cl(xf, coord)
if not np.isnan(cl):
cnt+=1
if type(label) is np.float64:
label = str(round(label, 3))
else:
label = str(round(label[0],3))
print("label: {0}, cl: {1}".format(label, cl))
class XFoilEnv(gym.Env):
"""
Description:
A pole is attached by an un-actuated joint to a cart, which moves along a frictionless track. The pendulum starts upright, and the goal is to prevent it from falling over by increasing and reducing the cart's velocity.
Source:
This environment corresponds to the version of the cart-pole problem described by Barto, Sutton, and Anderson
Observation:
Type: Box(4)
Num Observation Min Max
0 Cart Position -4.8 4.8
1 Cart Velocity -Inf Inf
2 Pole Angle -24 deg 24 deg
3 Pole Velocity At Tip -Inf Inf
Actions:
Type: Discrete(2)
Num Action
0 Push cart to the left
1 Push cart to the right
Note: The amount the velocity that is reduced or increased is not fixed; it depends on the angle the pole is pointing. This is because the center of gravity of the pole increases the amount of energy needed to move the cart underneath it
Reward:
Reward is 1 for every step taken, including the termination step
Starting State:
All observations are assigned a uniform random value in [-0.05..0.05]
Episode Termination:
Pole Angle is more than 12 degrees
Cart Position is more than 2.4 (center of the cart reaches the edge of the display)
Episode length is greater than 200
Solved Requirements
Considered solved when the average reward is greater than or equal to 195.0 over 100 consecutive trials.
"""
metadata = {
'render.modes': ['human', 'rgb_array'],
'video.frames_per_second' : 50
}
def __init__(self):
self.xf = XFoil()
self.min_action = np.array([0.1, 0.05, 1.0, 0.05, 0.4, 1.0, 0.0])
self.max_action = np.array([0.4, 0.4, 3.0, 3.0, 8.0, 10.0, 10.0])
''' 測試開始, 可省略測試'''
# (.01, .4), (.05, .4), (1, 3), (0.05, 3), (0.4, 8), (1, 10)
# self.xf.airfoil = naca0012
# k = [0.08813299, 0.28250898, 2.80168427, 2.56204214, 1.48703742, 8.53824561]
# k = [0.34422, 0.38976, 1.1, 2.9989, 1.6071, 9.9649]
k = [0.1584, 0.1565, 2.1241, 1.8255, 11.6983, 3.827] # org
# k = [0.1784, 0.1365, 2.1201, 1.8057, 3.8071, 11.7009]
# k = [0.1472, 0.1638, 2.1041, 1.8156, 3.8141, 11.6808]
# k = [0.1784, 0.1365, 2.1201, 1.8057, 3.8071, 11.7009]
# k = [0.1783, 0.1366, 2.1283, 1.8073, 3.8325, 11.7176]
# k = [0.25840, 0.14474, 2.22410, 1.92550, 11.59984, 3.92623]
airfoil = construct_airfoil(*k)
x, y = get_coords_plain(airfoil._spline(100))
self.xf.airfoil = Airfoil(x=x, y=y)
# test_airfoil = NACA4(2, 3, 15)
# a = test_airfoil.max_thickness()
# self.xf.airfoil = test_airfoil.get_coords()
self.xf.Re = 1e6
self.xf.M = 0.04
self.xf.print = False
cl, cd, cm, cp = self.xf.a(9)
x = np.array(x, dtype='float32')
y = np.array(y,dtype='float32')
# reward = cl/cd
reward = cl
''' 測試結束, 可省略測試'''
# cl, cd, cm, cp = self.xf.a(12.2357)
# self.action_space = spaces.Discrete(30)
self.action_space = spaces.Box(self.min_action, self.max_action, dtype=np.float32)
# high = np.array([100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0])
high = np.array([100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0])
self.observation_space = spaces.Box(-high, high, dtype=np.float32) #創建state大小(25,f22機翼,b3cl.cd.aoa)
self.seed()
self.viewer = None
self.state = None
self.steps_beyond_done = None
def seed(self, seed=None):
self.np_random, seed = seeding.np_random(seed)
return [seed]
def step(self, action):
# assert self.action_space.contains(action), "%r (%s) invalid"%(action, type(action))
''' action 包含 6 個機翼形狀控制參數以及 1 個攻角'''
angular = action[6]
k = action[0:6]
'''將機翼控制座標傳入 airfoil, 並計算翼面之座標'''
airfoil = construct_airfoil(*k)
x, y = get_coords_plain(airfoil._spline(100))
'''將座標傳入 xfoil '''
self.xf.airfoil = Airfoil(x=x, y=y)
# state = self.state
self.xf.Re = 1e6
self.xf.M = 0.04
'''計算 cl, cd, cm, cp 當角度為 angular 時'''
cl, cd, cm, cp = self.xf.a(angular)
'''如果結果不穩定, 有無限大之值, 重設 state'''
if np.isnan(cl) or np.isnan(cd) or np.isnan(cm) or np.isnan(cp):
reward = -10.0
# self.state = self.reset()
done = 0
else:
'''如果結果穩定, 結束這個 weight 的計算'''
'''升力最佳或升阻比最佳在此設定'''
# reward = cl/cd
reward = cl
'''從機翼座標裡抽取 11 點當作 state'''
x1, y1 = get_coords_plain(airfoil._spline(6))
'''state : 22 個機翼形狀值, 1 個角度, 1 個 cl, cd'''
# self.state = np.append(np.append(np.append(np.append(x1, y1),angular), cl), cd)
# self.state = np.append(np.append(x1, y1),angular)
self.state = np.append(x1, y1)
done = 1
return np.array(self.state), reward, done, {}
def step1(self, action):
# assert self.action_space.contains(action), "%r (%s) invalid"%(action, type(action))
angular = action[6]
k = action[0:6]
airfoil = construct_airfoil(*k)
x, y = get_coords_plain(airfoil._spline(100))
x1, y1 = get_coords_plain(airfoil._spline(6))
self.xf.airfoil = Airfoil(x=x, y=y)
# state = self.state
self.xf.Re = 1e6
self.xf.M = 0.04
cl, cd, cm, cp = self.xf.a(angular)
if np.isnan(cl) or np.isnan(cd) or np.isnan(cm) or np.isnan(cp):
# reward = np.nan
reward = -10
# self.state = self.reset()
done = 0
else:
# reward = cl/cd
reward = cl
done = 1
# self.state = np.append(np.append(np.append(np.append(x1, y1),angular), cl), cd)
# self.state = np.append(np.append(x1, y1),angular)
self.state = np.append(x1, y1)
return np.array(self.state), reward, done, x, y
def reset(self):
# (.01, .4), (.05, .4), (1, 3), (0.05, 3), (0.4, 8), (1, 10)
# 0.08813299, 0.28250898, 2.80168427, 2.56204214, 1.48703742, 8.53824561
'''為了避免 state 有無窮大的值, 所以設定decays範圍'''
# decays = [1.0, 0.5, 0.25, 0.125, 0.0625]
decays = [1.0, 0.999, 0.995, 0.99, 0.95, 0.9, 0.5]
for decay in decays:
tmp1 = self.np_random.uniform(low=-1.0, high=1.0, size=(7,))
# tmp = tmp * [0.39, 0.35, 2.0, 2.95, 7.6, 9, 10] + [0.01, 0.05, 1, 0.05, 0.4, 1, 0]
# tmp = tmp * [0.01, 0.1, 0.5, 0.5, 0.1, 1.0, 5] + [0.08813299, 0.28250898, 2.50168427, 2.56, 1.487, 8.54, 0]
# k = [0.1584, 0.1565, 2.1241, 1.8255, 3.827, 11.6983]
'''從標準NACA5410開始找'''
tmp1 = tmp1 * decay
tmp = tmp1 * [0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 5] + [0.1584, 0.1565, 2.1241, 1.8255, 11.6983, 3.827, 6]
airfoil = construct_airfoil(*tmp)
x, y = get_coords_plain(airfoil._spline(100))
self.xf.airfoil = Airfoil(x=x, y=y)
self.xf.Re = 1e6
self.xf.M = 0.04
cl, cd, cm, cp = self.xf.a(tmp[6])
if not np.isnan(cl):
break
x, y = get_coords_plain(airfoil._spline(6))
self.xf.Re = 1e6
self.xf.M = 0.04
# self.state = np.append(np.append(np.append(np.append(x, y), tmp1[6]), cl), cd)
# self.state = np.append(np.append(x, y), tmp1[6])
self.state = np.append(x, y)
self.steps_beyond_done = None
return np.array(self.state)
def render(self, mode='human'):
return None
def close(self):
if self.viewer:
self.viewer.close()
self.viewer = None
if __name__ == "__main__":
t0 = time.perf_counter()
#TODO: CST airfoil for Xfoil
cst_u = [ 0.135283, 0.088574, 0.177210, 0.080000, 0.231590, 0.189572, 0.192000]
cst_l = [-0.101390, -0.007993, -0.240000, -0.129790, -0.147840, -0.000050, 0.221251]
xx, yu, yl, t0, R0 = cst_foil(101, np.array(cst_u), np.array(cst_l), x=None, t=0.0954, tail=0.002)
x = np.concatenate((np.flip(xx[1:]), xx[1:]), axis=0)
y = np.concatenate((np.flip(yu[1:]), yl[1:]), axis=0)
foil = Airfoil(x, y)
#TODO: Xfoil
xf = XFoil()
xf.print = False
xf.max_iter = 40
xf.airfoil = foil
xf.xtr = [0.0, 0.0]
Minf = 0.2
AoA = 8.0
Re = 1e7
fname = 'feature-xfoil.txt'
xf.M = Minf
xf.Re = Re
cl, cd, cm, cp = xf.a(AoA)
x, cp = xf.get_cp_distribution()