def get_TL_NR(self):
self.stop = False
noise = 1e-10
P_input = get_acoustic_frf(self.preprocessor, self.solution,
self.input_node_ID)
P_output = get_acoustic_frf(self.preprocessor, self.solution,
self.output_node_ID)
P_input2 = 0.5 * np.real(P_input * np.conjugate(P_input)) + noise
P_output2 = 0.5 * np.real(P_output * np.conjugate(P_output)) + noise
d_in, rho_in, c0_in = self.get_minor_outer_diameter_from_node(
self.input_node_ID)
d_out, rho_out, c0_out = self.get_minor_outer_diameter_from_node(
self.output_node_ID)
# if 0 not in P_input2 and 0 not in P_output2:
if self.flagTL:
alpha_T = (P_output2 * rho_out * c0_out) / (P_input2 * rho_in *
c0_in)
TL = -10 * np.log10(alpha_T)
return TL
if self.flagNR:
delta = (P_output2 * rho_out * c0_out *
(d_out**2)) / (P_input2 * rho_in * c0_in * (d_in**2))
NR = 10 * np.log10(delta)
return NR
def ExportResults(self):
if self.lineEdit_FileName.text() != "":
if self.save_path != "":
self.export_path_folder = self.save_path + "/"
else:
title = "None folder selected"
message = "Plese, choose a folder before trying export the results."
PrintMessageInput([title, message, window_title1])
return
else:
title = "Empty file name"
message = "Inform a file name before trying export the results."
PrintMessageInput([title, message, window_title1])
return
if self.check(export=True):
return
freq = self.frequencies
self.export_path = self.export_path_folder + self.lineEdit_FileName.text(
) + ".dat"
if self.save_Absolute:
response = get_acoustic_frf(self.preprocessor, self.solution,
self.node_ID)
header = "Frequency[Hz], Real part [Pa], Imaginary part [Pa], Absolute [Pa]"
data_to_export = np.array(
[freq,
np.real(response),
np.imag(response),
np.abs(response)]).T
elif self.save_Real_Imaginary:
response = get_acoustic_frf(self.preprocessor, self.solution,
self.node_ID)
header = "Frequency[Hz], Real part [Pa], Imaginary part [Pa]"
data_to_export = np.array(
[freq, np.real(response),
np.imag(response)]).T
np.savetxt(self.export_path,
data_to_export,
delimiter=",",
header=header)
title = "Information"
message = "The results have been exported."
PrintMessageInput([title, message, window_title2])
def get_TL_NR(self):
P_input = get_acoustic_frf(self.mesh, self.solution, self.input_node)
P_output = get_acoustic_frf(self.mesh, self.solution, self.output_node)
P_input2 = 0.5 * np.real(P_input * np.conjugate(P_input))
P_output2 = 0.5 * np.real(P_output * np.conjugate(P_output))
d_in, rho_in, c0_in = self.get_minor_external_diameter_from_node(
self.input_node)
d_out, rho_out, c0_out = self.get_minor_external_diameter_from_node(
self.output_node)
if P_input2.all() != 0:
alpha_T = (P_output2 * rho_out * c0_out) / (P_input2 * rho_in *
c0_in)
TL = -10 * np.log10(alpha_T)
delta = (P_output2 * rho_out * c0_out *
(d_out**2)) / (P_input2 * rho_in * c0_in * (d_in**2))
NR = 10 * np.log10(delta)
else:
message = "The input pressure must be different from zero value!"
error(message, title=" Input pressure value Error ")
return TL, NR
def ExportResults(self):
if self.lineEdit_FileName.text() != "":
if self.save_path != "":
self.export_path_folder = self.save_path + "/"
else:
error(
"Plese, choose a folder before trying export the results!")
return
else:
error("Inform a file name before trying export the results!")
return
self.check(export=True)
freq = self.frequencies
self.export_path = self.export_path_folder + self.lineEdit_FileName.text(
) + ".dat"
if self.save_Absolute:
response = get_acoustic_frf(self.mesh, self.solution, self.nodeID)
header = "Frequency[Hz], Real part [Pa], Imaginary part [Pa], Absolute [Pa]"
data_to_export = np.array(
[freq,
np.real(response),
np.imag(response),
np.abs(response)]).T
elif self.save_Real_Imaginary:
response = get_acoustic_frf(self.mesh, self.solution, self.nodeID)
header = "Frequency[Hz], Real part [Pa], Imaginary part [Pa]"
data_to_export = np.array(
[freq, np.real(response),
np.imag(response)]).T
np.savetxt(self.export_path,
data_to_export,
delimiter=",",
header=header)
self.messages("The results has been exported.")
def plot(self):
fig = plt.figure(figsize=[12, 7])
ax = fig.add_subplot(1, 1, 1)
frequencies = self.frequencies
response = get_acoustic_frf(self.mesh,
self.solution,
self.nodeID,
absolute=self.plotAbs,
real=self.plotReal,
imag=self.plotImag)
if self.scale_dB:
if self.plotAbs:
response = self.dB(response)
ax.set_ylabel("Acoustic Response - Absolute [dB]",
fontsize=14,
fontweight='bold')
else:
if self.plotReal:
ax.set_ylabel("Acoustic Response - Real [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotImag:
ax.set_ylabel("Acoustic Response - Imaginary [Pa]",
fontsize=14,
fontweight='bold')
self.messages(
"The dB scalling can only be applied with the absolute \nY-axis representation, therefore, it will be ignored."
)
else:
if self.plotAbs:
ax.set_ylabel("Acoustic Response - Absolute [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotReal:
ax.set_ylabel("Acoustic Response - Real [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotImag:
ax.set_ylabel("Acoustic Response - Imaginary [Pa]",
fontsize=14,
fontweight='bold')
# mng = plt.get_current_fig_manager()
# mng.window.state('zoomed')
#cursor = Cursor(ax)
cursor = SnaptoCursor(ax, frequencies, response, show_cursor=True)
plt.connect('motion_notify_event', cursor.mouse_move)
legend_label = "Acoustic Pressure at node {}".format(self.nodeID)
if self.imported_data is None:
if self.plotAbs and not self.scale_dB:
first_plot, = plt.semilogy(frequencies,
response,
color=[1, 0, 0],
linewidth=2,
label=legend_label)
else:
first_plot, = plt.plot(frequencies,
response,
color=[1, 0, 0],
linewidth=2,
label=legend_label)
_legends = plt.legend(handles=[first_plot],
labels=[legend_label],
loc='upper right')
else:
data = self.imported_data
imported_Xvalues = data[:, 0]
if self.plotAbs:
imported_Yvalues = np.abs(data[:, 1] + 1j * data[:, 2])
if self.scale_dB:
imported_Yvalues = self.dB(imported_Yvalues)
elif self.plotReal:
imported_Yvalues = data[:, 1]
elif self.plotImag:
imported_Yvalues = data[:, 2]
if self.plotAbs and not self.scale_dB:
first_plot, = plt.semilogy(frequencies,
response,
color=[1, 0, 0],
linewidth=2)
second_plot, = plt.semilogy(imported_Xvalues,
imported_Yvalues,
color=[0, 0, 1],
linewidth=1,
linestyle="--")
else:
first_plot, = plt.plot(frequencies,
response,
color=[1, 0, 0],
linewidth=2)
second_plot, = plt.plot(imported_Xvalues,
imported_Yvalues,
color=[0, 0, 1],
linewidth=1,
linestyle="--")
_legends = plt.legend(handles=[first_plot, second_plot],
labels=[legend_label, self.legend_imported],
loc='upper right')
plt.gca().add_artist(_legends)
ax.set_title(
('Frequency Response: {} Method').format(self.analysisMethod),
fontsize=18,
fontweight='bold')
ax.set_xlabel(('Frequency [Hz]'), fontsize=14, fontweight='bold')
plt.show()
preprocessor.set_radiation_impedance_bc_by_node(1086 , 1)
elif flanged:
preprocessor.set_radiation_impedance_bc_by_node(1086 , 2)
preprocessor.set_fluid_by_element('all', air)
preprocessor.set_cross_section_by_element('all', cross_section)
# Analisys Frequencies
f_max = 2500
df = 1
frequencies = np.arange(df, f_max+df, df)
solution = SolutionAcoustic(preprocessor, frequencies)
direct = solution.direct_method()
pressure = get_acoustic_frf(preprocessor, direct, 1086, dB=True)
p_ref = 20e-6
plt.rcParams.update({'font.size': 12})
if unflanged:
fem=np.loadtxt("examples/validation_radiation_impedance/pout_fem_unflanged.dat", delimiter = ',')
title = "Pressure out - Unflanged pipe"
elif flanged:
fem=np.loadtxt("examples/validation_radiation_impedance/pout_fem_flanged.dat", delimiter = ',')
title = "Pressure out - Flanged pipe"
fem_dB = 20*np.log10(np.abs((fem[:, 3])/p_ref))
#Axis plots and legends
plt.title(title)
], 0, "section") # Expansion correction
preprocessor.set_length_correction_by_element([
608, 609, 610, 967, 968, 984, 985, 986, 987, 988, 1004, 1005, 1006, 1007,
1008, 1009, 1047, 1048, 1097, 1098, 1147, 1148, 1149
], 1, "section") # Side branch correction
# Analisys Frequencies
f_max = 250
df = 1
frequencies = np.arange(df, f_max + df, df)
solution = SolutionAcoustic(mesh, frequencies)
direct = solution.direct_method()
#%% Validation
pressure = get_acoustic_frf(mesh, direct, 1047, dB=True)
p_ref = 20e-6
plt.rcParams.update({'font.size': 12})
f_fem = np.loadtxt(
"examples/validation_length_correction/tube_2_expasion.dat")[:, 0]
p_fem = np.loadtxt(
"examples/validation_length_correction/tube_2_expasion.dat")[:, 1:]
p_fem_dB = 20 * np.log10(np.abs((p_fem[:, 0] + 1j * p_fem[:, 1]) / p_ref))
#Axis plots and legends
plt.title("Node 1047")
plt.plot(frequencies, pressure)
plt.plot(f_fem, p_fem_dB, '-.')
plt.legend(['FETM - OpenPulse', 'FEM 3D - Comsol'], loc='best')
mesh.set_fluid_by_element('all', hydrogen)
mesh.set_material_by_element('all', steel)
mesh.set_cross_section_by_element('all', cross_section)
# Analisys Frequencies
f_max = 250
df = 1
frequencies = np.arange(df, f_max + df, df)
solution_acoustic = SolutionAcoustic(mesh, frequencies)
direct = solution_acoustic.direct_method()
#%% Acoustic validation
if run == 1:
p_out = get_acoustic_frf(mesh, direct, 1086)
p_b1 = get_acoustic_frf(mesh, direct, 1136)
p_b2 = get_acoustic_frf(mesh, direct, 1186)
p_b3 = get_acoustic_frf(mesh, direct, 1236)
text_out = "Node 1086 (output)"
text_b1 = "Node 1136 (branch 1)"
text_b2 = "Node 1186 (branch 2)"
text_b3 = "Node 1236 (branch 3)"
elif run == 2:
p_out = get_acoustic_frf(mesh, direct, 1047)
p_b1 = get_acoustic_frf(mesh, direct, 1087)
p_b2 = get_acoustic_frf(mesh, direct, 1137)
p_b3 = get_acoustic_frf(mesh, direct, 1187)
text_out = "Node 1047 (output)"
text_b1 = "Node 1087 (branch 1)"
# Frequencies of analysis
f_max = 1000
df = 1
frequencies = np.arange(df, f_max + df, df)
solution = SolutionAcoustic(preprocessor, frequencies)
direct = solution.direct_method()
f_fem = np.loadtxt("examples/validation_mean_flow/dataM0p1_peters.txt",
delimiter=',')[:, 0]
p_fem = np.loadtxt("examples/validation_mean_flow/dataM0p1_peters.txt",
delimiter=',')[:, 1:3]
p_fem = p_fem[:, 0] + 1j * p_fem[:, 1]
p_ref = 20e-6
p_fem_dB = 20 * np.log10(np.abs(p_fem) / (np.sqrt(2) * p_ref))
p_out = get_acoustic_frf(preprocessor, direct, 103, dB=True)
plt.rcParams.update({'font.size': 12})
plt.figure()
#Axis plots and legends
plt.title('Node 51. Model: ' + str(element_type) + '. Mach: ' + str(mach))
plt.plot(frequencies, p_out)
plt.plot(f_fem, p_fem_dB, ':')
plt.legend(['FETM - OpenPulse', 'FETM - Martin'], loc='best')
plt.xlabel('Frequency [Hz]')
plt.ylabel('Pressure [dB]')
plt.xlim(df, f_max)
plt.grid(True)
plt.show()
solution = SolutionAcoustic(preprocessor, frequencies)
direct_pp = solution.direct_method()
f_fem = np.loadtxt("examples/validation_perforated_plate/FEM.txt",
delimiter=',')[:, 0]
p_fem = np.loadtxt("examples/validation_perforated_plate/FEM.txt",
delimiter=',')[:, 1:4]
p_ref = 20e-6
p_fem_dB = 20 * np.log10(p_fem[:, 2] / (np.sqrt(2) * p_ref))
plt.rcParams.update({'font.size': 12})
plt.figure()
#Axis plots and legends
plt.title("Node 234")
plt.plot(frequencies, get_acoustic_frf(preprocessor, direct, 234, dB=True))
plt.plot(frequencies, get_acoustic_frf(preprocessor, direct_pp, 234, dB=True),
'-.')
plt.plot(f_fem, p_fem_dB, ':')
# plt.plot(f_fem, p_fem_zlin[:,2],':')
plt.legend([
'FETM - OpenPulse', 'FETM - OpenPulse w/ Perforated Plate',
'FEM - w/ Perforated Plate'
],
loc='best')
plt.xlabel('Frequency [Hz]')
plt.ylabel('Pressure [dB]')
plt.xlim(0, 400)
# plt.ylim(40, 120)
plt.grid(True)
plt.show()
preprocessor.set_fluid_by_element('all', hydrogen)
preprocessor.set_material_by_element('all', steel)
preprocessor.set_cross_section_by_element('all', cross_section)
# Analisys Frequencies
f_max = 250
df = 1
frequencies = np.arange(df, f_max + df, df)
solution_acoustic = SolutionAcoustic(preprocessor, frequencies)
direct = solution_acoustic.direct_method()
#%% Acoustic validation
if run == 1:
p_out = get_acoustic_frf(preprocessor, direct, 1086)
p_b1 = get_acoustic_frf(preprocessor, direct, 1136)
p_b2 = get_acoustic_frf(preprocessor, direct, 1186)
p_b3 = get_acoustic_frf(preprocessor, direct, 1236)
text_out = "Node 1086 (output)"
text_b1 = "Node 1136 (branch 1)"
text_b2 = "Node 1186 (branch 2)"
text_b3 = "Node 1236 (branch 3)"
elif run == 2:
p_out = get_acoustic_frf(preprocessor, direct, 1047)
p_b1 = get_acoustic_frf(preprocessor, direct, 1087)
p_b2 = get_acoustic_frf(preprocessor, direct, 1137)
p_b3 = get_acoustic_frf(preprocessor, direct, 1187)
text_out = "Node 1047 (output)"
text_b1 = "Node 1087 (branch 1)"
def plot(self):
self.fig = plt.figure(figsize=[12, 7])
ax = self.fig.add_subplot(1, 1, 1)
frequencies = self.frequencies
response = get_acoustic_frf(self.preprocessor,
self.solution,
self.node_ID,
absolute=self.plotAbs,
real=self.plotReal,
imag=self.plotImag)
if complex(0) in response:
response += np.ones(len(response), dtype=float) * (1e-12)
if self.scale_dB:
if self.plotAbs:
response = self.dB(response)
ax.set_ylabel("Acoustic Response - Absolute [dB]",
fontsize=14,
fontweight='bold')
else:
if self.plotReal:
ax.set_ylabel("Acoustic Response - Real [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotImag:
ax.set_ylabel("Acoustic Response - Imaginary [Pa]",
fontsize=14,
fontweight='bold')
title = "Plot Information"
message = "The dB scalling can only be applied with the absolute \nY-axis representation, therefore, it will be ignored."
PrintMessageInput([title, message, window_title2])
else:
if self.plotAbs:
ax.set_ylabel("Acoustic Response - Absolute [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotReal:
ax.set_ylabel("Acoustic Response - Real [Pa]",
fontsize=14,
fontweight='bold')
elif self.plotImag:
ax.set_ylabel("Acoustic Response - Imaginary [Pa]",
fontsize=14,
fontweight='bold')
# mng = plt.get_current_fig_manager()
# mng.window.state('zoomed')
#cursor = Cursor(ax)
self.cursor = SnaptoCursor(ax, frequencies, response, self.use_cursor)
self.mouse_connection = self.fig.canvas.mpl_connect(
s='motion_notify_event', func=self.cursor.mouse_move)
legend_label = "Acoustic Pressure at node {}".format(self.node_ID)
if self.imported_data is None:
response += np.ones(len(response), dtype=float) * (1e-12)
if self.plotAbs and not self.scale_dB and not complex(
0) in response:
first_plot, = plt.semilogy(frequencies,
response,
color=[1, 0, 0],
linewidth=2,
label=legend_label)
else:
first_plot, = plt.plot(frequencies,
response,
color=[1, 0, 0],
linewidth=2,
label=legend_label)
_legends = plt.legend(handles=[first_plot],
labels=[legend_label],
loc='upper right')
else:
data = self.imported_data
imported_Xvalues = data[:, 0]
if self.plotAbs:
imported_Yvalues = np.abs(data[:, 1] + 1j * data[:, 2])
if complex(0) in imported_Yvalues:
imported_Yvalues += np.ones(len(imported_Yvalues),
dtype=float) * (1e-12)
if self.scale_dB:
imported_Yvalues = self.dB(imported_Yvalues)
elif self.plotReal:
imported_Yvalues = data[:, 1]
elif self.plotImag:
imported_Yvalues = data[:, 2]
if self.plotAbs and not self.scale_dB and not complex(
0) in response:
first_plot, = plt.semilogy(frequencies,
response,
color=[1, 0, 0],
linewidth=2)
second_plot, = plt.semilogy(imported_Xvalues,
imported_Yvalues,
color=[0, 0, 1],
linewidth=1,
linestyle="--")
else:
first_plot, = plt.plot(frequencies,
response,
color=[1, 0, 0],
linewidth=2)
second_plot, = plt.plot(imported_Xvalues,
imported_Yvalues,
color=[0, 0, 1],
linewidth=1,
linestyle="--")
_legends = plt.legend(handles=[first_plot, second_plot],
labels=[legend_label, self.legend_imported],
loc='upper right')
plt.gca().add_artist(_legends)
ax.set_title(('ACOUSTIC FREQUENCY RESPONSE - {}').format(
self.analysisMethod.upper()),
fontsize=16,
fontweight='bold')
ax.set_xlabel(('Frequency [Hz]'), fontsize=14, fontweight='bold')
self.fig.show()