def shocktube(kernel_language='Fortran',
solver_type='classic',
use_petsc=False,
outdir='shocktube_output',
output_format='hdf5',
disable_output=False,
mx=10,
my=10,
mz=128,
tfinal=1.0,
num_output_times=10):
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D(riemann.euler_3D)
solver.dimensional_split = True
solver.limiters = pyclaw.limiters.tvd.MC
solver.cfl_max = 1.0
solver.cfl_desired = 0.80
elif solver_type == 'sharpclaw':
solver = pyclaw.SharpClawSolver3D(riemann.euler_3D)
else:
raise Exception('Unrecognized solver_type.')
domain = pyclaw.Domain((-1., -1., -1.), (1., 1., 1.), (mx, my, mz))
state = pyclaw.State(domain, num_eqn)
state.problem_data['gamma'] = gamma
grid = state.grid
X, Y, Z = grid.p_centers
pressure = 3. * (Z <= 0) + 1. * (Z > 0)
state.q[density, :, :, :] = 3. * (Z <= 0) + 1. * (Z > 0)
state.q[x_momentum, :, :, :] = 0.
state.q[y_momentum, :, :, :] = 0.
state.q[z_momentum, :, :, :] = 0.
state.q[energy, :, :, :] = pressure / (gamma - 1.)
solver.all_bcs = pyclaw.BC.extrap
claw = pyclaw.Controller()
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.output_format = output_format
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.tfinal = tfinal
claw.num_output_times = num_output_times
claw.outdir = outdir
return claw
def setup(use_petsc=False,
outdir='./_output',
solver_type='classic',
mx=30,
my=30,
mz=30,
disable_output=False,
problem='heterogeneous',
**kwargs):
"""
Example python script for solving the 3d acoustics equations.
"""
from clawpack import riemann
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D(riemann.vc_acoustics_3D)
solver.limiters = pyclaw.limiters.tvd.MC
elif solver_type == 'sharpclaw':
solver = pyclaw.SharpClawSolver3D(riemann.vc_acoustics_3D)
else:
raise Exception('Unrecognized solver_type.')
solver.bc_lower[0] = pyclaw.BC.periodic
solver.bc_upper[0] = pyclaw.BC.periodic
solver.bc_lower[1] = pyclaw.BC.periodic
solver.bc_upper[1] = pyclaw.BC.periodic
solver.bc_lower[2] = pyclaw.BC.periodic
solver.bc_upper[2] = pyclaw.BC.periodic
solver.aux_bc_lower[0] = pyclaw.BC.periodic
solver.aux_bc_upper[0] = pyclaw.BC.periodic
solver.aux_bc_lower[1] = pyclaw.BC.periodic
solver.aux_bc_upper[1] = pyclaw.BC.periodic
solver.aux_bc_lower[2] = pyclaw.BC.periodic
solver.aux_bc_upper[2] = pyclaw.BC.periodic
zl = 1.0 # Impedance in left half
cl = 1.0 # Sound speed in left half
if problem == 'homogeneous':
if solver_type == 'classic':
solver.dimensional_split = True
else:
solver.lim_type = 1
solver.limiters = [4]
mx = mx
my = my
mz = mz # Grid resolution
zr = 1.0 # Impedance in right half
cr = 1.0 # Sound speed in right half
if problem == 'heterogeneous':
if solver_type == 'classic':
solver.dimensional_split = False
solver.bc_lower[0] = pyclaw.BC.wall
solver.bc_lower[1] = pyclaw.BC.wall
solver.bc_lower[2] = pyclaw.BC.wall
solver.aux_bc_lower[0] = pyclaw.BC.wall
solver.aux_bc_lower[1] = pyclaw.BC.wall
solver.aux_bc_lower[2] = pyclaw.BC.wall
mx = mx
my = my
mz = mz # Grid resolution
zr = 2.0 # Impedance in right half
cr = 2.0 # Sound speed in right half
solver.limiters = pyclaw.limiters.tvd.MC
# Initialize domain
x = pyclaw.Dimension('x', -1.0, 1.0, mx)
y = pyclaw.Dimension('y', -1.0, 1.0, my)
z = pyclaw.Dimension('z', -1.0, 1.0, mz)
domain = pyclaw.Domain([x, y, z])
num_eqn = 4
num_aux = 2 # density, sound speed
state = pyclaw.State(domain, num_eqn, num_aux)
X, Y, Z = state.grid.p_centers
state.aux[0, :, :, :] = zl * (X < 0.) + zr * (X >= 0.) # Impedance
state.aux[1, :, :, :] = cl * (X < 0.) + cr * (X >= 0.) # Sound speed
# Set initial density
x0 = -0.5
y0 = 0.
z0 = 0.
if problem == 'homogeneous':
r = np.sqrt((X - x0)**2)
width = 0.2
state.q[0, :, :, :] = (np.abs(r) <= width) * (1. + np.cos(np.pi *
(r) / width))
elif problem == 'heterogeneous':
r = np.sqrt((X - x0)**2 + (Y - y0)**2 + (Z - z0)**2)
width = 0.1
state.q[0, :, :, :] = (np.abs(r - 0.3) <= width) * (
1. + np.cos(np.pi * (r - 0.3) / width))
else:
raise Exception('Unrecognized problem name')
# Set initial velocities to zero
state.q[1, :, :, :] = 0.
state.q[2, :, :, :] = 0.
state.q[3, :, :, :] = 0.
claw = pyclaw.Controller()
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.outdir = outdir
claw.tfinal = 2.0
return claw
def euler3d(kernel_language='Fortran',solver_type='classic',\
use_petsc=False,outdir='./_output',\
output_format='hdf5',file_prefix='equil',disable_output=False,\
mx=mxyz[0],my=mxyz[1],mz=mxyz[2],\
tfinal=64.0,num_output_times=1):
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D()
solver.dimensional_split = True
solver.limiters = pyclaw.limiters.tvd.minmod
solver.num_ghost = 2
solver.order = 2
solver.fwave = True
elif solver_type == 'sharpclaw':
solver = pyclaw.SharpClawSolver3D()
else:
raise Exception('Unrecognized solver_type.')
import logging
solver.logger.setLevel(logging.DEBUG)
import euler_3d_gmap
solver.rp = euler_3d_gmap
solver.num_eqn = 5
solver.num_waves = 3
solver.cfl_max = 0.6
solver.cfl_desired = 0.5
solver.dt_initial = 1.e-0
solver.max_steps = 10000
# Initialize Domain
x = pyclaw.Dimension(0.0, 1.0, mx, name='x')
y = pyclaw.Dimension(0.0, 1.0, my, name='y')
z = pyclaw.Dimension(0.0, 1.0, mz, name='z')
domain = pyclaw.Domain([x, y, z])
num_aux = 15
state = pyclaw.State(domain, solver.num_eqn, num_aux)
state.problem_data['gamma'] = gamma
state.problem_data['g_r'] = gR
state.problem_data['gravity'] = gravityTerm
state.problem_data['gravityflux'] = gravityEflux
# Grids
mbc = solver.num_ghost
grid = state.grid
# Computational Grid Sizes
dxc = domain.grid.delta[0]
dyc = domain.grid.delta[1]
dzc = domain.grid.delta[2]
pmx, pmy, pmz = grid.num_cells[0], grid.num_cells[1], grid.num_cells[2]
# Computational Grid Centers and Edges
centers = grid.c_centers # centers (Comp.)
centersBC = grid.c_centers_with_ghost(mbc) # centers w Ghost (Comp.)
edgesBC = grid.c_edges_with_ghost(mbc) # edges w Ghost (Comp.)
# Grid Centers Without Boundary Cells (1D Slice) - Comp. and Phys.
xcc = grid.x.centers # x centers (Comp.)
ycc = grid.y.centers # y centers (Comp.)
zcc = grid.z.centers # z centers (Comp.)
xcp, ycp, zcp = mg.mapc2pwrapper(xcc, ycc, zcc, pmz, xyzMin, xyzMax,
mapType)
# Grid Centers Without Boundary Cells (3D Arrays)
Xcc, Ycc, Zcc = centers[0][:][:][:], centers[1][:][:][:], centers[
2][:][:][:]
Xcp, Ycp, Zcp = mg.mapc2pwrapper(Xcc, Ycc, Zcc, pmz, xyzMin, xyzMax,
mapType)
Xcp = np.reshape(Xcp, [pmx, pmy, pmz], order='F') # x centers (Phys.)
Ycp = np.reshape(Ycp, [pmx, pmy, pmz], order='F') # y centers (Phys.)
Zcp = np.reshape(Zcp, [pmx, pmy, pmz], order='F') # z centers (Phys.)
# Grid Edges With Boundary Cells (1D Slice along z)- Comp. and Phys.
xecZ = edgesBC[0][0][0][:] # x edges along z (Comp.)
yecZ = edgesBC[1][0][0][:] # y edges along z (Comp.)
zecZ = edgesBC[2][0][0][:] # z edges along z (Comp.)
xepZ, yepZ, zepZ = mg.mapc2pwrapper(xecZ, yecZ, zecZ, pmz, xyzMin, xyzMax,
mapType)
# Grid Centers With Boundary Cells (1D Slice along z) - Comp. and Phys.
global zcpZ
xccZ = centersBC[0][0][0][:] # x centers along z (Comp.)
yccZ = centersBC[1][0][0][:] # y centers along z (Comp.)
zccZ = centersBC[2][0][0][:] # z centers along z (Comp.)
xcpZ, ycpZ, zcpZ = mg.mapc2pwrapper(xccZ, yccZ, zccZ, pmz, xyzMin, xyzMax,
mapType)
if np.sqrt(xepZ[0]**2 + yepZ[0]**2 + zepZ[0]**2) <= 0:
print "WARNING: z may go below Earth's surface", " zepZ: ", zepZ[0:10]
# Create vectors for 1D pressure and density column with boundary cells
mz0 = pmz + 2 * mbc
global p0, rho0, Mavg
p0 = np.zeros([mz0], dtype='float', order='F')
rho0 = np.zeros([mz0], dtype='float', order='F')
Mavg = np.zeros([mz0], dtype='float', order='F')
# Set the equilibrium pressure such that dp/dz = -rho*gR
p0, rho0, Mavg = setEquilibriumAtmosphere(p0, rho0, Mavg)
# Modify the equilibrium such that dp/dz = -rho*gR is held numerically
p0 = modifyEquilibriumAtmosphere(zepZ, p0, rho0)
# Set the auxiliary variables
xlower, ylower, zlower = edgesBC[0][0][0][0], edgesBC[1][0][0][0], edgesBC[
2][0][0][0]
dxc, dyc, dzc = domain.grid.delta[0], domain.grid.delta[
1], domain.grid.delta[2]
global auxtmp
auxtmp = np.zeros([num_aux, pmx + 2 * mbc, pmy + 2 * mbc, pmz + 2 * mbc],
dtype='float',
order='F')
auxtmp = mg.setauxiliaryvariables(num_aux, mbc, pmx, pmy, pmz, xlower,
ylower, zlower, dxc, dyc, dzc, xyzMin,
xyzMax, mapType)
state.aux[:, :, :, :] = auxtmp[:, mbc:-mbc, mbc:-mbc, mbc:-mbc]
# Set Index for Capcaity Function in state.aux (Python 0-based)
state.index_capa = 12
# Set the state variables (Initial Conditions)
# Initialize p,T,velSqrd
p = np.zeros([pmx, pmy, pmz], dtype='float', order='F')
T = np.zeros([pmx, pmy, pmz], dtype='float', order='F')
velSqrd = np.zeros([pmx, pmy, pmz], dtype='float', order='F')
# Density
for i in range(pmx):
for j in range(pmy):
# NEEDS TO BE FIXED WHEN MPI SLICES NORMAL TO Z
state.q[0, i, j, :] = rho0[mbc:pmz + mbc]
# Momentum
state.q[1, :, :, :] = 0. # x-momentum (rho*u)
state.q[2, :, :, :] = 0. # y-momentum (rho*v)
state.q[3, :, :, :] = 0. # z-momentum (rho*w)
# Velocity Squared (u**2+v**2+w**2)
velSqrd[:, :, :] = (state.q[1, :, :, :]**2 + state.q[2, :, :, :]**2 +
state.q[3, :, :, :]**2) / state.q[0, :, :, :]**2
# Energy
for i in range(pmx):
for j in range(pmy):
# NEEDS TO BE FIXED WHEN MPI SLICES NORMAL TO Z
p[i, j, :] = p0[mbc:pmz + mbc]
state.q[4, :, :, :] = p / gamma1 + 0.5 * state.q[
0, :, :, :] * velSqrd + state.q[0, :, :, :] * (
gR) * Zcp[:, :, :] * gFlux
# Add Temperature Perturbation
T = p / state.q[0, :, :, :]
L = np.sqrt((Xcp - xSphere)**2 + (Ycp - ySphere)**2 + (Zcp - zSphere)**2)
for i in range(pmx):
for j in range(pmy):
for k in range(pmz):
if L[i, j, k] <= rSphere:
mu = Mavg[k + mbc] / nAvogadro
T[i, j, k] += TSphere * (kBoltzmann /
mu) * (1.0 - L[i, j, k] / rSphere)
p[i, j, k] = T[i, j, k] * state.q[0, i, j, k]
state.q[4, :, :, :] = p / gamma1 + 0.5 * state.q[
0, :, :, :] * velSqrd + state.q[0, :, :, :] * (
gR) * Zcp[:, :, :] * gFlux # energy (e)
# Setup Boundary Conditions
# X - Boundary Conditions
solver.bc_lower[0] = pyclaw.BC.extrap
solver.bc_upper[0] = pyclaw.BC.extrap
# Y - Boundary Conditions
solver.bc_lower[1] = pyclaw.BC.extrap
solver.bc_upper[1] = pyclaw.BC.extrap
# Z - Boundary Conditions
solver.bc_lower[2] = pyclaw.BC.custom
solver.bc_upper[2] = pyclaw.BC.custom
solver.user_bc_lower = customBCLowerZ
solver.user_bc_upper = customBCUpperZ
# Aux - Boundary Conditions
solver.aux_bc_lower[0] = pyclaw.BC.extrap
solver.aux_bc_upper[0] = pyclaw.BC.extrap
solver.aux_bc_lower[1] = pyclaw.BC.extrap
solver.aux_bc_upper[1] = pyclaw.BC.extrap
solver.aux_bc_lower[2] = pyclaw.BC.custom
solver.aux_bc_upper[2] = pyclaw.BC.custom
solver.user_aux_bc_lower = customAuxBCLowerZ
solver.user_aux_bc_upper = customAuxBCUpperZ
# Solver Parameters
claw = pyclaw.Controller()
claw.verbosity = 4
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.output_format = output_format
claw.output_file_prefix = file_prefix
claw.keep_copy = False
if disable_output:
claw.output_format = None
claw.tfinal = tfinal
claw.num_output_times = num_output_times
claw.outdir = outdir
#state.mp = 1
#claw.compute_p = outputDensity
return claw
def acoustics3D(iplot=False,
htmlplot=False,
use_petsc=False,
outdir='./_output',
solver_type='classic',
disable_output=False,
**kwargs):
"""
Example python script for solving the 3d acoustics equations.
"""
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D()
else:
raise Exception('Unrecognized solver_type.')
from clawpack import riemann
solver.rp = riemann.rp3_vc_acoustics
solver.num_waves = 2
solver.limiters = pyclaw.limiters.tvd.MC
solver.bc_lower[0] = pyclaw.BC.periodic
solver.bc_upper[0] = pyclaw.BC.periodic
solver.bc_lower[1] = pyclaw.BC.periodic
solver.bc_upper[1] = pyclaw.BC.periodic
solver.bc_lower[2] = pyclaw.BC.periodic
solver.bc_upper[2] = pyclaw.BC.periodic
solver.aux_bc_lower[0] = pyclaw.BC.periodic
solver.aux_bc_upper[0] = pyclaw.BC.periodic
solver.aux_bc_lower[1] = pyclaw.BC.periodic
solver.aux_bc_upper[1] = pyclaw.BC.periodic
solver.aux_bc_lower[2] = pyclaw.BC.periodic
solver.aux_bc_upper[2] = pyclaw.BC.periodic
app = None
if 'test' in kwargs:
test = kwargs['test']
if test == 'homogeneous':
app = 'test_homogeneous'
elif test == 'heterogeneous':
app = 'test_heterogeneous'
else:
raise Exception('Unrecognized test')
if app == 'test_homogeneous':
solver.dimensional_split = True
mx = 256
my = 4
mz = 4
zr = 1.0 # Impedance in right half
cr = 1.0 # Sound speed in right half
if app == 'test_heterogeneous' or app == None:
solver.dimensional_split = False
solver.dimensional_split = False
solver.bc_lower[0] = pyclaw.BC.wall
solver.bc_lower[1] = pyclaw.BC.wall
solver.bc_lower[2] = pyclaw.BC.wall
solver.aux_bc_lower[0] = pyclaw.BC.wall
solver.aux_bc_lower[1] = pyclaw.BC.wall
solver.aux_bc_lower[2] = pyclaw.BC.wall
mx = 30
my = 30
mz = 30
zr = 2.0 # Impedance in right half
cr = 2.0 # Sound speed in right half
solver.limiters = pyclaw.limiters.tvd.MC
# Initialize domain
x = pyclaw.Dimension('x', -1.0, 1.0, mx)
y = pyclaw.Dimension('y', -1.0, 1.0, my)
z = pyclaw.Dimension('z', -1.0, 1.0, mz)
domain = pyclaw.Domain([x, y, z])
num_eqn = 4
num_aux = 2 # density, sound speed
state = pyclaw.State(domain, num_eqn, num_aux)
zl = 1.0 # Impedance in left half
cl = 1.0 # Sound speed in left half
grid = state.grid
grid.compute_c_centers()
X, Y, Z = grid._c_centers
state.aux[0, :, :, :] = zl * (X < 0.) + zr * (X >= 0.) # Impedance
state.aux[1, :, :, :] = cl * (X < 0.) + cr * (X >= 0.) # Sound speed
x0 = -0.5
y0 = 0.
z0 = 0.
if app == 'test_homogeneous':
r = np.sqrt((X - x0)**2)
width = 0.2
state.q[0, :, :, :] = (np.abs(r) <= width) * (1. + np.cos(np.pi *
(r) / width))
elif app == 'test_heterogeneous' or app == None:
r = np.sqrt((X - x0)**2 + (Y - y0)**2 + (Z - z0)**2)
width = 0.1
state.q[0, :, :, :] = (np.abs(r - 0.3) <= width) * (
1. + np.cos(np.pi * (r - 0.3) / width))
else:
raise Exception('Unexpected application')
state.q[1, :, :, :] = 0.
state.q[2, :, :, :] = 0.
state.q[3, :, :, :] = 0.
claw = pyclaw.Controller()
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.outdir = outdir
# Solve
claw.tfinal = 2.0
status = claw.run()
if htmlplot:
pyclaw.plot.html_plot(outdir=outdir, file_format=claw.output_format)
if iplot:
pyclaw.plot.interactive_plot(outdir=outdir,
file_format=claw.output_format)
pinitial = claw.frames[0].state.get_q_global()
pmiddle = claw.frames[3].state.get_q_global()
pfinal = claw.frames[claw.num_output_times].state.get_q_global()
if pinitial != None and pmiddle != None and pfinal != None:
pinitial = pinitial[0, :, :, :].reshape(-1)
pmiddle = pmiddle[0, :, :, :].reshape(-1)
pfinal = pfinal[0, :, :, :].reshape(-1)
final_difference = np.prod(grid.delta) * np.linalg.norm(
pfinal - pinitial, ord=1)
middle_difference = np.prod(grid.delta) * np.linalg.norm(
pmiddle - pinitial, ord=1)
if app == None:
print 'Final error: ', final_difference
print 'Middle error: ', middle_difference
#import matplotlib.pyplot as plt
#for i in range(claw.num_output_times):
# plt.pcolor(claw.frames[i].state.q[0,:,:,mz/2])
# plt.figure()
#plt.show()
return pfinal, final_difference
else:
return
def setup(kernel_language='Fortran', solver_type='classic', use_petsc=False,
dimensional_split=False, outdir='Sedov_output', output_format='hdf5',
disable_output=False, num_cells=(64,64,64),
tfinal=0.10, num_output_times=10):
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type=='classic':
solver = pyclaw.ClawSolver3D(riemann.euler_3D)
solver.dimensional_split = dimensional_split
solver.limiters = pyclaw.limiters.tvd.minmod
solver.cfl_max = 0.6
solver.cfl_desired = 0.55
solver.dt_initial = 3e-4
else:
raise Exception('Unrecognized solver_type.')
x = pyclaw.Dimension(-1.0, 1.0, num_cells[0], name='x')
y = pyclaw.Dimension(-1.0, 1.0, num_cells[1], name='y')
z = pyclaw.Dimension(-1.0, 1.0, num_cells[2], name='z')
domain = pyclaw.Domain([x,y,z])
state = pyclaw.State(domain,num_eqn)
state.problem_data['gamma']=gamma
grid = state.grid
X,Y,Z = grid.p_centers
r = np.sqrt((X-x0)**2 + (Y-y0)**2 + (Z-z0)**2)
state.q[density, :,:,:] = 1.0
state.q[x_momentum,:,:,:] = 0.
state.q[y_momentum,:,:,:] = 0.
state.q[z_momentum,:,:,:] = 0.
background_pressure = 1.0e-2
Eblast = 0.851072
pressure_in = Eblast*(gamma-1.)/(4./3.*np.pi*rmax**3)
state.q[energy,:,:,:] = background_pressure/(gamma-1.) # energy (e)
# Compute cell fraction inside initial perturbed sphere
dx, dy, dz = state.grid.delta
dx2, dy2, dz2 = [d/2. for d in state.grid.delta]
dmax = max(state.grid.delta)
for i in range(state.q.shape[1]):
for j in range(state.q.shape[2]):
for k in range(state.q.shape[3]):
if r[i,j,k] - dmax > rmax:
continue
xdown = X[i,j,k] - dx2
xup = X[i,j,k] + dx2
ydown = lambda x : Y[i,j,k] - dy2
yup = lambda x : Y[i,j,k] + dy2
zdown = Z[i,j,k] - dz2
zup = Z[i,j,k] + dz2
infrac,abserr = integrate.dblquad(f,xdown,xup,ydown,yup,args=(zdown,zup),epsabs=1.e-3,epsrel=1.e-2)
infrac=infrac/(dx*dy*dz)
p = background_pressure + pressure_in*infrac # pressure
state.q[energy,i,j,k] = p/(gamma-1.) # energy (e)
solver.all_bcs = pyclaw.BC.extrap
claw = pyclaw.Controller()
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.output_format = output_format
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.tfinal = tfinal
claw.num_output_times = num_output_times
claw.outdir = outdir
return claw
def setup(kernel_language='Fortran',
solver_type='classic',
use_petsc=False,
dimensional_split=False,
outdir='_output',
output_format='hdf5',
disable_output=False,
num_cells=(256, 64, 64),
tfinal=0.6,
num_output_times=10):
from clawpack import riemann
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D(riemann.euler_3D)
solver.dimensional_split = dimensional_split
else:
raise Exception('Unrecognized solver_type.')
x = pyclaw.Dimension(0.0, 2.0, num_cells[0], name='x')
y = pyclaw.Dimension(0.0, 0.5, num_cells[1], name='y')
z = pyclaw.Dimension(0.0, 0.5, num_cells[2], name='z')
domain = pyclaw.Domain([x, y, z])
solver.all_bcs = pyclaw.BC.extrap
solver.bc_lower[0] = pyclaw.BC.custom
solver.user_bc_lower = incoming_shock
solver.bc_lower[1] = pyclaw.BC.wall
solver.bc_lower[2] = pyclaw.BC.wall
state = pyclaw.State(domain, solver.num_eqn)
state.problem_data['gamma'] = gamma
grid = state.grid
X, Y, Z = grid.p_centers
r0 = np.sqrt((X - x0)**2 + (Y - y0)**2 + (Z - z0)**2)
state.q[0, :, :, :] = rho_shock * (X < xshock) + rhoout * (
X >= xshock) # density (rho)
state.q[1, :, :, :] = rho_shock * v_shock * (X < xshock
) # x-momentum (rho*u)
state.q[2, :, :, :] = 0. # y-momentum (rho*v)
state.q[3, :, :, :] = 0. # z-momentum (rho*w)
state.q[4, :, :, :] = e_shock * (X < xshock) + pout / gamma1 * (
X >= xshock) # energy (e)
# Compute cell fraction inside bubble
dx, dy, dz = state.grid.delta
dx2, dy2, dz2 = [d / 2. for d in state.grid.delta]
dmax = max(state.grid.delta)
for i in range(state.q.shape[1]):
for j in range(state.q.shape[2]):
for k in range(state.q.shape[3]):
if (r0[i, j, k] - dmax > r_bubble):
continue
xdown = X[i, j, k] - dx2
xup = X[i, j, k] + dx2
ydown = lambda x: Y[i, j, k] - dy2
yup = lambda x: Y[i, j, k] + dy2
zdown = Z[i, j, k] - dz2
zup = Z[i, j, k] + dz2
infrac, abserr = integrate.dblquad(bubble,
xdown,
xup,
ydown,
yup,
args=(zdown, zup, 0),
epsabs=1.e-3,
epsrel=1.e-2)
infrac = infrac / (dx * dy * dz)
state.q[0, i, j, k] = rhoout * (1. - infrac) + rhoin * infrac
state.q[4, i, j, k] = (pout * (1. - infrac) +
pin * infrac) / gamma1 # energy (e)
claw = pyclaw.Controller()
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.output_format = output_format
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.tfinal = tfinal
claw.num_output_times = num_output_times
claw.outdir = outdir
return claw
def setup(use_petsc=False,outdir='./_output',solver_type='classic',disable_output=False,**kwargs):
"""
Example python script for solving the 3d acoustics equations.
"""
from clawpack import riemann
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type=='classic':
solver=pyclaw.ClawSolver3D(riemann.vc_acoustics_3D)
else:
raise Exception('Unrecognized solver_type.')
solver.limiters = pyclaw.limiters.tvd.MC
solver.bc_lower[0]=pyclaw.BC.periodic
solver.bc_upper[0]=pyclaw.BC.periodic
solver.bc_lower[1]=pyclaw.BC.periodic
solver.bc_upper[1]=pyclaw.BC.periodic
solver.bc_lower[2]=pyclaw.BC.periodic
solver.bc_upper[2]=pyclaw.BC.periodic
solver.aux_bc_lower[0]=pyclaw.BC.periodic
solver.aux_bc_upper[0]=pyclaw.BC.periodic
solver.aux_bc_lower[1]=pyclaw.BC.periodic
solver.aux_bc_upper[1]=pyclaw.BC.periodic
solver.aux_bc_lower[2]=pyclaw.BC.periodic
solver.aux_bc_upper[2]=pyclaw.BC.periodic
app = None
if 'test' in kwargs:
test = kwargs['test']
if test == 'homogeneous':
app = 'test_homogeneous'
elif test == 'heterogeneous':
app = 'test_heterogeneous'
else: raise Exception('Unrecognized test')
if app == 'test_homogeneous':
solver.dimensional_split=True
mx=256; my=4; mz=4
zr = 1.0 # Impedance in right half
cr = 1.0 # Sound speed in right half
if app == 'test_heterogeneous' or app == None:
solver.dimensional_split=False
solver.dimensional_split=False
solver.bc_lower[0] =pyclaw.BC.wall
solver.bc_lower[1] =pyclaw.BC.wall
solver.bc_lower[2] =pyclaw.BC.wall
solver.aux_bc_lower[0]=pyclaw.BC.wall
solver.aux_bc_lower[1]=pyclaw.BC.wall
solver.aux_bc_lower[2]=pyclaw.BC.wall
mx=30; my=30; mz=30
zr = 2.0 # Impedance in right half
cr = 2.0 # Sound speed in right half
solver.limiters = pyclaw.limiters.tvd.MC
# Initialize domain
x = pyclaw.Dimension('x',-1.0,1.0,mx)
y = pyclaw.Dimension('y',-1.0,1.0,my)
z = pyclaw.Dimension('z',-1.0,1.0,mz)
domain = pyclaw.Domain([x,y,z])
num_eqn = 4
num_aux = 2 # density, sound speed
state = pyclaw.State(domain,num_eqn,num_aux)
zl = 1.0 # Impedance in left half
cl = 1.0 # Sound speed in left half
grid = state.grid
grid.compute_c_centers()
X,Y,Z = grid._c_centers
state.aux[0,:,:,:] = zl*(X<0.) + zr*(X>=0.) # Impedance
state.aux[1,:,:,:] = cl*(X<0.) + cr*(X>=0.) # Sound speed
x0 = -0.5; y0 = 0.; z0 = 0.
if app == 'test_homogeneous':
r = np.sqrt((X-x0)**2)
width=0.2
state.q[0,:,:,:] = (np.abs(r)<=width)*(1.+np.cos(np.pi*(r)/width))
elif app == 'test_heterogeneous' or app == None:
r = np.sqrt((X-x0)**2 + (Y-y0)**2 + (Z-z0)**2)
width=0.1
state.q[0,:,:,:] = (np.abs(r-0.3)<=width)*(1.+np.cos(np.pi*(r-0.3)/width))
else: raise Exception('Unexpected application')
state.q[1,:,:,:] = 0.
state.q[2,:,:,:] = 0.
state.q[3,:,:,:] = 0.
claw = pyclaw.Controller()
claw.keep_copy = True
if disable_output:
claw.output_format = None
claw.solution = pyclaw.Solution(state,domain)
claw.solver = solver
claw.outdir=outdir
# Solve
claw.tfinal = 2.0
return claw
def shockbubble(use_petsc=False,
iplot=False,
htmlplot=False,
outdir='./_output',
solver_type='classic',
amr_type=None):
"""
Solve the Euler equations of compressible fluid dynamics.
This example involves a bubble of dense gas that is impacted by a shock.
"""
from clawpack import riemann
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'sharpclaw':
solver = pyclaw.SharpClawSolver3D(riemann.euler_3D)
solver.weno_order = 5
solver.lim_type = 2
else:
solver = pyclaw.ClawSolver3D(riemann.euler_3D)
solver.dimensional_split = 1
# solver.transverse_waves = 3
solver.limiters = 4
solver.cfl_max = 0.2
solver.cfl_desired = 0.15
solver.order = 2
solver.dt_initial = 1 # 0.000125
solver.num_waves = 3
solver.bc_lower[0] = pyclaw.BC.custom
solver.bc_upper[0] = pyclaw.BC.extrap
solver.bc_lower[1] = pyclaw.BC.extrap
solver.bc_upper[1] = pyclaw.BC.extrap
solver.bc_lower[2] = pyclaw.BC.extrap
solver.bc_upper[2] = pyclaw.BC.extrap
# Initialize domain
factor = 1 #2.0/3.0+1e-10#1.5+1e-10
mx = int(12 * factor)
my = int(6 * factor)
mz = int(6 * factor)
# number of initial AMR grids in each dimension
msubgrid = 27
if amr_type is None:
# number of Domain grid cells expressed as the product of
# grid resolution and the number of AMR sub-grids for
# easy comparison between the two methods
mx = mx * msubgrid
my = my * msubgrid
mz = mz * msubgrid
x = pyclaw.Dimension('x', 0.0, 2.0, mx)
y = pyclaw.Dimension('y', -0.5, 0.5, my)
z = pyclaw.Dimension('z', -0.5, 0.5, mz)
domain = pyclaw.Domain([x, y, z])
num_eqn = 5
state = pyclaw.State(domain, num_eqn)
state.problem_data['gamma'] = gamma
state.problem_data['gamma1'] = gamma1
qinit(state)
print np.min(state.q[0, ...].reshape(-1))
solver.user_bc_lower = shockbc
claw = pyclaw.Controller()
claw.tfinal = 0.5 #1
claw.num_output_times = 10 #50
claw.outdir = outdir
claw.output_format = None
if amr_type is not None:
if amr_type == 'peano':
import peanoclaw as amrclaw
claw.solver = amrclaw.Solver(
solver,
(x.upper - x.lower) / (mx * msubgrid),
qinit
#,refinement_criterion=refinement_criterion_gradient
,
internal_settings=amrclaw.InternalSettings(
enable_peano_logging=True,
fork_level_increment=1,
use_dimensional_splitting_optimization=True))
claw.solution = amrclaw.Solution(state, domain)
else:
raise Exception('unsupported amr_type %s' % amr_type)
else:
claw.solver = solver
claw.solution = pyclaw.Solution(state, domain)
return claw
def acoustics3D(finalt=1.0,
use_petsc=True,
outdir='./_output',
solver_type='sharpclaw',
disable_output=True,
dm=[30, 30, 30],
**kwargs):
"""
Python script for scaling test based on 3D acoustics.
"""
from clawpack import riemann
if use_petsc:
import clawpack.petclaw as pyclaw
else:
from clawpack import pyclaw
if solver_type == 'classic':
solver = pyclaw.ClawSolver3D(riemann.vc_acoustics_3D)
solver.limiters = pyclaw.limiters.tvd.MC
elif solver_type == 'sharpclaw':
solver = pyclaw.SharpClawSolver3D(riemann.vc_acoustics_3D)
else:
raise Exception('Unrecognized solver_type.')
size = PETSc.Comm.getSize(PETSc.COMM_WORLD)
rank = PETSc.Comm.getRank(PETSc.COMM_WORLD)
solver.bc_lower[0] = pyclaw.BC.periodic
solver.bc_upper[0] = pyclaw.BC.periodic
solver.bc_lower[1] = pyclaw.BC.periodic
solver.bc_upper[1] = pyclaw.BC.periodic
solver.bc_lower[2] = pyclaw.BC.periodic
solver.bc_upper[2] = pyclaw.BC.periodic
solver.aux_bc_lower[0] = pyclaw.BC.periodic
solver.aux_bc_upper[0] = pyclaw.BC.periodic
solver.aux_bc_lower[1] = pyclaw.BC.periodic
solver.aux_bc_upper[1] = pyclaw.BC.periodic
solver.aux_bc_lower[2] = pyclaw.BC.periodic
solver.aux_bc_upper[2] = pyclaw.BC.periodic
app = None
# dm = None
if 'test' in kwargs:
test = kwargs['test']
if test == 'homogeneous':
app = 'test_homogeneous'
elif test == 'heterogeneous':
app = 'test_heterogeneous'
else:
raise Exception('Unrecognized test')
if app == 'test_homogeneous':
if solver_type == 'classic':
solver.dimensional_split = True
else:
solver.lim_type = 1
solver.limiters = [4]
# if 'griddm' in kwargs:
# dm=kwargs['griddm']
mx = dm[0]
my = dm[1]
mz = dm[2]
# else:
# mx=256; my=4; mz=4
zr = 1.0 # Impedance in right half
cr = 1.0 # Sound speed in right half
if app == 'test_heterogeneous' or app == None:
if solver_type == 'classic':
solver.dimensional_split = False
solver.bc_lower[0] = pyclaw.BC.wall
solver.bc_lower[1] = pyclaw.BC.wall
solver.bc_lower[2] = pyclaw.BC.wall
solver.aux_bc_lower[0] = pyclaw.BC.wall
solver.aux_bc_lower[1] = pyclaw.BC.wall
solver.aux_bc_lower[2] = pyclaw.BC.wall
# if 'griddm' in kwargs:
# dm=kwargs['griddm']
mx = dm[0]
my = dm[1]
mz = dm[2]
# else:
# mx=30; my=30; mz=30
zr = 2.0 # Impedance in right half
cr = 2.0 # Sound speed in right half
solver.limiters = pyclaw.limiters.tvd.MC
solver.cfl_max = 0.5
solver.cfl_desired = 0.45
solver.dt_variable = True
# Initialize domain
x = pyclaw.Dimension('x', -1.0, 1.0, mx)
y = pyclaw.Dimension('y', -1.0, 1.0, my)
z = pyclaw.Dimension('z', -1.0, 1.0, mz)
domain = pyclaw.Domain([x, y, z])
num_eqn = 4
num_aux = 2 # density, sound speed
state = pyclaw.State(domain, num_eqn, num_aux)
zl = 1.0 # Impedance in left half
cl = 1.0 # Sound speed in left half
grid = state.grid
grid.compute_c_centers()
X, Y, Z = grid._c_centers
state.aux[0, :, :, :] = zl * (X < 0.) + zr * (X >= 0.) # Impedance
state.aux[1, :, :, :] = cl * (X < 0.) + cr * (X >= 0.) # Sound speed
x0 = -0.5
y0 = 0.
z0 = 0.
if app == 'test_homogeneous':
r = np.sqrt((X - x0)**2)
width = 0.2
state.q[0, :, :, :] = (np.abs(r) <= width) * (1. + np.cos(np.pi *
(r) / width))
elif app == 'test_heterogeneous' or app == None:
r = np.sqrt((X - x0)**2 + (Y - y0)**2 + (Z - z0)**2)
width = 0.1
state.q[0, :, :, :] = (np.abs(r - 0.3) <= width) * (
1. + np.cos(np.pi * (r - 0.3) / width))
else:
raise Exception('Unexpected application')
state.q[1, :, :, :] = 0.
state.q[2, :, :, :] = 0.
state.q[3, :, :, :] = 0.
dt = np.min(grid.delta) / 2.0 * solver.cfl_desired
solver.dt = dt
tic1 = MPI.Wtime()
claw = pyclaw.Controller()
claw.keep_copy = False
if disable_output:
claw.output_format = None
claw.solution = pyclaw.Solution(state, domain)
claw.solver = solver
claw.output_style = 3
claw.nstepout = 1
claw.outdir = outdir + '_' + str(size)
# Solve
claw.tfinal = finalt
claw.num_output_times = 1
tic2 = MPI.Wtime()
status = claw.run()
toc = MPI.Wtime()
timeVec1.array = toc - tic1
timeVec2.array = toc - tic2
t1 = MPI.Wtime()
duration1 = timeVec1.max()[1]
duration2 = timeVec2.max()[1]
t2 = MPI.Wtime()
log = MPI.File.Open(
MPI.COMM_WORLD,
os.path.join(outdir,
"results_" + str(size) + '_' + str(ncells) + ".log"),
MPI.MODE_CREATE | MPI.MODE_WRONLY)
if rank == 0:
results = np.empty([7])
log.Write(solver_type + ' \n')
log.Write('clawrun + load took ' + str(duration1) +
' seconds, for process ' + str(rank) + '\n')
log.Write('clawrun took ' + str(duration2) + ' seconds, for process ' +
str(rank) + ' in grid ' + str(mx) + '\n')
log.Write('number of steps: ' +
str(claw.solver.status.get('numsteps')) + '\n')
log.Write('time reduction time ' + str(t2 - t1) + '\n')
log.Write('tfinal ' + str(claw.tfinal) + ' and dt ' + str(solver.dt))
print solver_type + ' \n'
print 'clawrun + load took ' + str(
duration1) + ' seconds, for process ' + str(rank) + '\n'
print 'clawrun took ' + str(
duration2) + ' seconds, for process ' + str(
rank) + ' in grid ' + str(mx) + '\n'
print 'number of steps: ' + str(
claw.solver.status.get('numsteps')) + '\n'
print 'time reduction time ' + str(t2 - t1) + '\n'
print 'tfinal ' + str(claw.tfinal) + ' and dt ' + str(solver.dt)
results[0] = size
results[1] = mx
results[2] = np.min(grid.delta)
results[3] = claw.tfinal
results[4] = solver.dt
results[5] = duration1
results[6] = duration2
np.save(
os.path.join(outdir, 'results_' + str(size) + '_' + str(ncells)),
results)
return
