diff --git a/dart/src/wNewton.cpp b/dart/src/wNewton.cpp
index 1d801953e86634863fba0c643f8c2c3c633c975f..28efba8418e0a040d7100405ff4a5f9f630188e8 100644
--- a/dart/src/wNewton.cpp
+++ b/dart/src/wNewton.cpp
@@ -87,11 +87,14 @@ bool Newton::run()
tbb::global_control control(tbb::global_control::max_allowed_parallelism, nthreads);
// Display current freestream conditions
- std::cout << std::setprecision(2)
- << "- Mach " << pbl->M_inf << ", "
- << pbl->alpha * 180 / 3.14159 << " deg AoA, "
- << pbl->beta * 180 / 3.14159 << " deg AoS"
- << std::endl;
+ if (printOn)
+ {
+ std::cout << std::setprecision(2)
+ << "- Mach " << pbl->M_inf << ", "
+ << pbl->alpha * 180 / 3.14159 << " deg AoA, "
+ << pbl->beta * 180 / 3.14159 << " deg AoS"
+ << std::endl;
+ }
// Initialize solver loop
nIt = 0; // iteration counter
@@ -117,21 +120,24 @@ bool Newton::run()
ls.set(maxLsIt, lsTol, verbose);
// Display residual
- std::cout << std::setw(8) << "N_Iter"
- << std::setw(8) << "L_Iter"
- << std::setw(8) << "f_eval"
- << std::setw(12) << "Cl"
- << std::setw(12) << "Cd"
- << std::setw(15) << "Rel_Res[phi]"
- << std::setw(15) << "Abs_Res[phi]" << std::endl;
- std::cout << std::fixed << std::setprecision(5);
- std::cout << std::setw(8) << nIt
- << std::setw(8) << 0
- << std::setw(8) << 1
- << std::setw(12) << "-"
- << std::setw(12) << "-"
- << std::setw(15) << log10(relRes)
- << std::setw(15) << log10(absRes) << "\n";
+ if (printOn)
+ {
+ std::cout << std::setw(8) << "N_Iter"
+ << std::setw(8) << "L_Iter"
+ << std::setw(8) << "f_eval"
+ << std::setw(12) << "Cl"
+ << std::setw(12) << "Cd"
+ << std::setw(15) << "Rel_Res[phi]"
+ << std::setw(15) << "Abs_Res[phi]" << std::endl;
+ std::cout << std::fixed << std::setprecision(5);
+ std::cout << std::setw(8) << nIt
+ << std::setw(8) << 0
+ << std::setw(8) << 1
+ << std::setw(12) << "-"
+ << std::setw(12) << "-"
+ << std::setw(15) << log10(relRes)
+ << std::setw(15) << log10(absRes) << "\n";
+ }
do
{
@@ -197,7 +203,7 @@ bool Newton::run()
Solver::computeLoad();
// Display residual (at each iteration)
- if (verbose > 0)
+ if (verbose > 0 && printOn)
{
std::cout << std::fixed << std::setprecision(5);
std::cout << std::setw(8) << nIt
@@ -219,7 +225,7 @@ bool Newton::run()
} while (nIt < maxIt);
// Display residual (only last iteration)
- if (verbose == 0)
+ if (verbose == 0 && printOn)
{
std::cout << std::fixed << std::setprecision(5);
std::cout << std::setw(8) << nIt
@@ -237,11 +243,13 @@ bool Newton::run()
// Check the solution
if (relRes < relTol || absRes < absTol)
{
- std::cout << ANSI_COLOR_GREEN << "Newton solver converged!" << ANSI_COLOR_RESET << std::endl;
- if (verbose > 1)
- std::cout << "Newton solver CPU" << std::endl
- << tms;
- std::cout << std::endl;
+ if (printOn){
+ std::cout << ANSI_COLOR_GREEN << "Newton solver converged!" << ANSI_COLOR_RESET << std::endl;
+ if (verbose > 1)
+ std::cout << "Newton solver CPU" << std::endl
+ << tms;
+ std::cout << std::endl;
+ }
return true;
}
else if (std::isnan(relRes))
diff --git a/dart/src/wNewton.h b/dart/src/wNewton.h
index 76cac5358ecb724d91b41afe7777c97382d2f832..f7b632f6090c1aef6216571229f76c5c7e4286b6 100644
--- a/dart/src/wNewton.h
+++ b/dart/src/wNewton.h
@@ -42,6 +42,8 @@ public:
int maxLsIt; ///< max number of line search
double avThrsh; ///< residual threshold to deacrease artificial viscosity
+ bool printOn=true;
+
private:
double mCOv; ///< variable cut-off Mach number
double muCv; ///< variable artificial viscosity scaling factor
diff --git a/dart/src/wViscSolver.cpp b/dart/src/wViscSolver.cpp
index 5ffef5261bb69d22b908e74f76a21194480fc778..ebdc62d2bb103aa90dcb57f5bf1fe8c2bc59d272 100644
--- a/dart/src/wViscSolver.cpp
+++ b/dart/src/wViscSolver.cpp
@@ -109,13 +109,13 @@ void ViscSolver::InitMeshes(size_t region, std::vector<double> locM, std::vector
std::vector<double> fGlobMesh = meshConverter->CreateFineMesh(globM);
bl[region]->fineSize = fLocMesh.size();
bl[region]->SetMesh(fLocMesh, fGlobMesh);
- std::cout << "- " << bl[region]->name << ": Mesh mapped from " << locM.size() << " to " << bl[region]->GetnMarkers() << " elements." << std::endl;
+ //std::cout << "- " << bl[region]->name << ": Mesh mapped from " << locM.size() << " to " << bl[region]->GetnMarkers() << " elements." << std::endl;
}
else
{
bl[region]->SetMesh(locM, globM);
bl[region]->fineSize = locM.size();
- std::cout << "- " << bl[region]->name << ": Mesh elements " << bl[region]->GetnMarkers() << std::endl;
+ //std::cout << "- " << bl[region]->name << ": Mesh elements " << bl[region]->GetnMarkers() << std::endl;
}
}
@@ -134,7 +134,7 @@ void ViscSolver::SendInvBC(size_t region, std::vector<double> _Ue,
std::vector<double> RhoeFine = meshConverter->InterpolateToFineMesh(_Rhoe, bl[region]->fineSize);
bl[region]->SetInvBC(UeFine, MeFine, RhoeFine);
- std::cout << "- " << bl[region]->name << ": Inviscid boundary interpolated." << std::endl;
+ //std::cout << "- " << bl[region]->name << ": Inviscid boundary interpolated." << std::endl;
}
else
{
@@ -174,12 +174,16 @@ int ViscSolver::Run(unsigned int couplIter){
tSolver->SetinitSln(true);
if (couplIter != 0 && (nbElmUpper != bl[0]->GetnMarkers())){
stagPtMvmt = true;
- std::cout << "Stagnation point moved" << std::endl;
+ if (printOn){
+ std::cout << "Stagnation point moved" << std::endl;
+ }
}
else{
stagPtMvmt = false;
}
- std::cout << "Restart solution" << std::endl;
+ if (printOn){
+ std::cout << "Restart solution" << std::endl;
+ }
}
else{
@@ -187,7 +191,9 @@ int ViscSolver::Run(unsigned int couplIter){
tSolver->SetitFrozenJac(5);
tSolver->SetinitSln(false);
stagPtMvmt = false;
- std::cout << "Updating solution" << std::endl;
+ if (printOn){
+ std::cout << "Updating solution" << std::endl;
+ }
}
nbElmUpper = bl[0]->GetnMarkers();
@@ -218,7 +224,9 @@ int ViscSolver::Run(unsigned int couplIter){
}
lockTrans = false;
- std::cout << "- " << bl[iRegion]->name << " region";
+ if (printOn){
+ std::cout << "- " << bl[iRegion]->name << " region";
+ }
if (iRegion == 2){
/* Impose wake boundary condition */
@@ -227,7 +235,9 @@ int ViscSolver::Run(unsigned int couplIter){
UpperCond = std::vector<double>(bl[0]->U.end() - bl[0]->GetnVar(), bl[0]->U.end()); /* Base std::vector constructor to slice */
LowerCond = std::vector<double>(bl[1]->U.end() - bl[1]->GetnVar(), bl[1]->U.end()); /* Base std::vector constructor to slice */
bl[iRegion]->SetWakeBC(Re, UpperCond, LowerCond);
- std::cout << "\n" << std::endl;
+ if (printOn){
+ std::cout << "\n" << std::endl;
+ }
lockTrans = true;
}
@@ -245,7 +255,9 @@ int ViscSolver::Run(unsigned int couplIter){
pointExitCode = tSolver->Integration(iPoint, bl[iRegion]);
if (pointExitCode!=0)
{
- std::cout << "Point " << iPoint << ": Convergence terminated with exitcode " << pointExitCode << std::endl;
+ if (printOn){
+ std::cout << "Point " << iPoint << ": Convergence terminated with exitcode " << pointExitCode << std::endl;
+ }
solverExitCode = -1; // Convergence failed
}
@@ -258,7 +270,9 @@ int ViscSolver::Run(unsigned int couplIter){
// Free transition.
if (bl[iRegion]->U[iPoint*bl[iRegion]->GetnVar() + 2] >= bl[iRegion]->GetnCrit()){
AverageTransition(iPoint, bl[iRegion], 0);
- std::cout << ", free transition x/c = " << bl[iRegion]->xtr << ". Marker " << bl[iRegion]->transMarker << std::endl;
+ if (printOn){
+ std::cout << ", free transition x/c = " << bl[iRegion]->xtr << ". Marker " << bl[iRegion]->transMarker << std::endl;
+ }
lockTrans = true;
} // End if
} // End if (!lockTrans).
@@ -393,7 +407,7 @@ std::vector<double> ViscSolver::ExtractDeltaStar(size_t iRegion)
std::vector<double> cDStar;
if (mapMesh)
{
- std::cout << "DeltaStar size" << bl[iRegion]->DeltaStar.size() << std::endl;
+ // std::cout << "DeltaStar size" << bl[iRegion]->DeltaStar.size() << std::endl;
cDStar = meshConverter->VarsFineToCoarse(bl[iRegion]->DeltaStar, bl[iRegion]->coarseSize);
}
else
diff --git a/dart/src/wViscSolver.h b/dart/src/wViscSolver.h
index a8286b46153e204b0b5658c40e950e55537fe3f1..e5c72884c7712fdd382eb35cb238aa2e5e4eeaf0 100644
--- a/dart/src/wViscSolver.h
+++ b/dart/src/wViscSolver.h
@@ -13,9 +13,9 @@ public:
double Cdt;
double Cdf;
double Cdp;
+ double Re;
private:
- double Re;
double Minf;
double CFL0;
size_t nbElmUpper;
@@ -28,6 +28,8 @@ private:
public:
std::vector<BLRegion *> bl;
+ bool printOn = true;
+
ViscSolver(double _Re, double _Minf, double _CFL0, unsigned int meshFactor);
~ViscSolver();
diff --git a/dart/tests/blicpp.py b/dart/tests/blicpp.py
index 3b756977788a3a050226708880c302a04bb748dc..a2eefe0be72b588f15ecf2004dab1b75f08ed966 100644
--- a/dart/tests/blicpp.py
+++ b/dart/tests/blicpp.py
@@ -39,6 +39,7 @@ import dart.default as floD
import dart.viscUtils as viscU
import dart.vCoupler as floVC
+import numpy as np
import tbox
import tbox.utils as tboxU
@@ -56,10 +57,11 @@ def main():
# define flow variables
Re = 1e7
- alpha = 15*math.pi/180
- M_inf = 0.2
+ alpha = 2*math.pi/180
+ alphaSeq = np.linspace(0, 10, 10)
+ M_inf = 0.
- meshFactor = 2
+ meshFactor = 1
CFL0 = 1
plotVar = 'Cf'
@@ -72,7 +74,7 @@ def main():
# mesh the geometry
print(ccolors.ANSI_BLUE + 'PyMeshing...' + ccolors.ANSI_RESET)
tms['msh'].start()
- pars = {'xLgt' : 5, 'yLgt' : 5, 'msF' : 1, 'msTe' : 0.01, 'msLe' : 0.0001}
+ pars = {'xLgt' : 5, 'yLgt' : 5, 'msF' : 1, 'msTe' : 0.01, 'msLe' : 0.001}
msh, gmshWriter = floD.mesh(dim, 'models/n0012.geo', pars, ['field', 'airfoil', 'downstream'])
tms['msh'].stop()
@@ -93,7 +95,7 @@ def main():
coupler.CreateProblem(blw[0], blw[1])
- coupler.Run()
+ coupler.RunPolar(alphaSeq)
tms['solver'].stop()
# extract Cp
diff --git a/dart/tests/blicppPolar.py b/dart/tests/blicppPolar.py
new file mode 100644
index 0000000000000000000000000000000000000000..63a5ebbfaab8dac39a97c49692f33b8d7e2d64a6
--- /dev/null
+++ b/dart/tests/blicppPolar.py
@@ -0,0 +1,147 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# Copyright 2020 University of Liège
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+## Compute lifting (linear or nonlinear) viscous flow around a NACA 0012
+# Amaury Bilocq
+#
+# Test the viscous-inviscid interaction scheme
+# Reference to the master's thesis: http://hdl.handle.net/2268/252195
+# Reference test cases with Naca0012 (different from master's thesis):
+# 1) Incompressible: Re = 1e7, M_inf = 0, alpha = 5°, msTE = 0.01, msLE = 0.01
+# -> nIt = 27, Cl = 0.55, Cd = 0.0058, xtrTop = 0.087, xtrBot = 0.741
+# -> msLe = 0.001, xtrTop = 0.061
+# 2) Compressible: Re = 1e7, M_inf = 5, alpha = 5°, msTE = 0.01, msLE = 0.01
+# -> nIt = 33, Cl = 0.65, Cd = 0.0063, xtrTop = 0.057, xtrBot = 0.740
+# 3) Separated: Re = 1e7, M_inf = 0, alpha = 12°, msTE = 0.01, msLE = 0.001
+# -> nIt = 43, Cl = 1.30 , Cd = 0.0108, xtrTop = 0.010, xtrBot = 1
+#
+# CAUTION
+# This test is provided to ensure that the solver works properly.
+# Mesh refinement may have to be performed to obtain physical results.
+
+import dart.utils as floU
+import dart.default as floD
+import dart.viscUtils as viscU
+
+import dart.vCoupler as floVC
+
+import tbox
+import tbox.utils as tboxU
+import fwk
+from fwk.testing import *
+from fwk.coloring import ccolors
+
+import numpy as np
+
+import math
+
+def main():
+ print('Start')
+ # timer
+ tms = fwk.Timers()
+ tms['total'].start()
+
+ # define flow variables
+ Re = 1e7
+ alpha = np.linspace(-5, 5, 1)*math.pi/180
+ M_inf = 0.
+
+ meshFactor = 1
+ CFL0 = 1
+
+ plotVar = 'Cf'
+
+ # ========================================================================================
+
+ c_ref = 1
+ dim = 2
+
+ # mesh the geometry
+ print(ccolors.ANSI_BLUE + 'PyMeshing...' + ccolors.ANSI_RESET)
+ tms['msh'].start()
+ pars = {'xLgt' : 5, 'yLgt' : 5, 'msF' : 1, 'msTe' : 0.01, 'msLe' : 0.0001}
+ msh, gmshWriter = floD.mesh(dim, 'models/n0012.geo', pars, ['field', 'airfoil', 'downstream'])
+ tms['msh'].stop()
+
+ # set the problem and add medium, initial/boundary conditions
+
+ tms['pre'].start()
+ pbl, _, _, bnd, blw = floD.problem(msh, dim, alpha[0], 0., M_inf, c_ref, c_ref, 0.25, 0., 0., 'airfoil', te = 'te', vsc = True, dbc=True)
+ tms['pre'].stop()
+
+ # solve viscous problem
+
+ print(ccolors.ANSI_BLUE + 'PySolving...' + ccolors.ANSI_RESET)
+ tms['solver'].start()
+
+ isolver = floD.newton(pbl)
+ vsolver = floD.initBL(Re, M_inf, CFL0, meshFactor)
+
+ coupler = floVC.Coupler(isolver, vsolver, alpha)
+
+ coupler.CreateProblem(blw[0], blw[1])
+
+ coupler.Run()
+ tms['solver'].stop()
+
+ # extract Cp
+ Cp = floU.extract(bnd.groups[0].tag.elems, isolver.Cp)
+ tboxU.write(Cp, 'Cp_airfoil.dat', '%1.5e', ', ', 'x, y, z, Cp', '')
+ # display results
+ print(ccolors.ANSI_BLUE + 'PyRes...' + ccolors.ANSI_RESET)
+ print(' Re M alpha Cl Cd Cdp Cdf Cm')
+ print('{0:6.1f}e6 {1:8.2f} {2:8.1f} {3:8.4f} {4:8.4f} {5:8.4f} {6:8.4f} {7:8.4f}'.format(Re/1e6, M_inf, alpha*180/math.pi, isolver.Cl, vsolver.Cdt, vsolver.Cdp, vsolver.Cdf, isolver.Cm))
+
+ # display timers
+ tms['total'].stop()
+ print(ccolors.ANSI_BLUE + 'PyTiming...' + ccolors.ANSI_RESET)
+ print('CPU statistics')
+ print(tms)
+
+
+
+ # visualize solution and plot results
+ #floD.initViewer(pbl)
+ tboxU.plot(Cp[:,0], Cp[:,3], 'x', 'Cp', 'Cl = {0:.{3}f}, Cd = {1:.{3}f}, Cm = {2:.{3}f}'.format(isolver.Cl, vsolver.Cdt, isolver.Cm, 4), True)
+
+ blScalars, blVectors = viscU.ExtractVars(vsolver)
+ xtr=vsolver.Getxtr()
+ wData = viscU.Dictionary(blScalars, blVectors, xtr)
+ viscU.PlotVars(wData, plotVar)
+
+
+ # check results
+ print(ccolors.ANSI_BLUE + 'PyTesting...' + ccolors.ANSI_RESET)
+ tests = CTests()
+ if Re == 1e7 and M_inf == 0.2 and alpha == 5*math.pi/180:
+ tests.add(CTest('Cl', isolver.Cl, 0.56, 5e-2)) # XFOIL 0.58
+ tests.add(CTest('Cd', vsolver.Cdt, 0.0063, 1e-3, forceabs=True)) # XFOIL 0.00617
+ tests.add(CTest('Cdp', vsolver.Cdp, 0.0019, 1e-3, forceabs=True)) # XFOIL 0.00176
+ tests.add(CTest('xtr_top', vsolver.xtr[0], 0.059, 0.03, forceabs=True)) # XFOIL 0.0510
+ tests.add(CTest('xtr_bot', vsolver.xtr[1], 0.738, 0.03, forceabs=True)) # XFOIL 0.7473
+ else:
+ raise Exception('Test not defined for this flow')
+
+ tests.run()
+
+
+ # eof
+ print('')
+
+if __name__ == "__main__":
+ main()
diff --git a/dart/vCoupler.py b/dart/vCoupler.py
index a93f9ece5f9cf530d8ad0f3c90820a3cdac1db59..6224e6e078b8df1094e5f38468a934af5e31c1de 100644
--- a/dart/vCoupler.py
+++ b/dart/vCoupler.py
@@ -19,11 +19,13 @@
## VII Coupler
# Paul Dechamps
+from multiprocessing import set_forkserver_preload
from dart.viscous.Master.DAirfoil import Airfoil
from dart.viscous.Master.DWake import Wake
from dart.viscous.Drivers.DGroupConstructor import GroupConstructor
from fwk.coloring import ccolors
+import math
import fwk
import dart.viscUtils as viscU
@@ -56,8 +58,11 @@ class Coupler:
nElmUpperPrev = 0
couplIter = 0
cdPrev = 0
+ print('- AoA: {:<2.2f} Mach: {:<1.1f} Re: {:<2.1f}e6'
+ .format(self.iSolver.pbl.alpha*180/math.pi, self.iSolver.pbl.M_inf, self.vSolver.Re/1e6))
+ print('{:>5s}| {:>10s} {:>10s} | {:>8s} {:>6s} {:>8s}'.format('It', 'Cl', 'Cd', 'xtrT', 'xtrB', 'Error'))
+ print(' --------------------------------------------------------')
while couplIter < self.maxCouplIter:
-
# Run inviscid solver
self.tms['inv'].start()
@@ -83,7 +88,7 @@ class Coupler:
if ((len(fMeshDict['locCoord'][:fMeshDict['bNodes'][1]]) != nElmUpperPrev) or couplIter==0):
- print('STAG POINT MOVED')
+ # print('STAG POINT MOVED')
# Initialize mesh
self.vSolver.InitMeshes(0, fMeshDict['locCoord'][:fMeshDict['bNodes'][1]], fMeshDict['globCoord'][:fMeshDict['bNodes'][1]])
@@ -104,13 +109,13 @@ class Coupler:
self.vSolver.SendInvBC(0, fMeshDict['vtExt'][:fMeshDict['bNodes'][1]], fMeshDict['Me'][:fMeshDict['bNodes'][1]], fMeshDict['rho'][:fMeshDict['bNodes'][1]])
self.vSolver.SendInvBC(1, fMeshDict['vtExt'][fMeshDict['bNodes'][1]:fMeshDict['bNodes'][2]], fMeshDict['Me'][fMeshDict['bNodes'][1]:fMeshDict['bNodes'][2]], fMeshDict['rho'][fMeshDict['bNodes'][1]:fMeshDict['bNodes'][2]])
self.vSolver.SendInvBC(2, fMeshDict['vtExt'][fMeshDict['bNodes'][2]:], fMeshDict['Me'][fMeshDict['bNodes'][2]:], fMeshDict['rho'][fMeshDict['bNodes'][2]:])
- print('Inviscid boundary imposed')
+ # print('Inviscid boundary imposed')
# Run viscous solver
self.tms['visc'].start()
exitCode = self.vSolver.Run(couplIter)
self.tms['visc'].stop()
- print('Viscous ops terminated with exit code ', exitCode)
+ # print('Viscous ops terminated with exit code ', exitCode)
error = abs((self.vSolver.Cdt - cdPrev)/self.vSolver.Cdt) if self.vSolver.Cdt != 0 else 1
@@ -124,19 +129,27 @@ class Coupler:
if error <= self.couplTol and exitCode==0:
- print(self.tms)
- print('')
+ #print(self.tms)
+ print(ccolors.ANSI_GREEN,'{:>4.0f}| {:>10.5f} {:>10.5f} | {:>8.2f} {:>6.2f} {:>8.2f}\n'.format(couplIter, self.iSolver.Cl, self.vSolver.Cdt, xtr[0], xtr[1], np.log10(error)),ccolors.ANSI_RESET)
+
+ """print('')
print(ccolors.ANSI_GREEN, 'It: {:<3.0f} Cd = {:<6.5f}. Error = {:<2.3f} < {:<2.3f}'
.format(couplIter, self.vSolver.Cdt, np.log10(error), np.log10(self.couplTol)), ccolors.ANSI_RESET)
- print('')
+ print('')"""
return 0
cdPrev = self.vSolver.Cdt
+
+ xtr=self.vSolver.Getxtr()
+
+ #print('{:>5s} {:>12s} {:>12s} {:>12s} {:>6s} {:>12s}'.format('It', 'Cl', 'Cd', 'xtrT', 'xtrB', 'Error'))
+ if couplIter%5==0:
+ print(' {:>4.0f}| {:>10.5f} {:>10.5f} | {:>8.2f} {:>6.2f} {:>8.2f}'.format(couplIter, self.iSolver.Cl, self.vSolver.Cdt, xtr[0], xtr[1], np.log10(error)))
- print('')
+ """print('')
print(ccolors.ANSI_BLUE, 'It: {:<3.0f} Cd = {:<6.5f}. Error = {:<2.3f} > {:<2.3f}'
.format(couplIter, self.vSolver.Cdt, np.log10(error), np.log10(self.couplTol)), ccolors.ANSI_RESET)
- print('')
+ print('')"""
# Retreive and set blowing velocities.
@@ -198,3 +211,30 @@ class Coupler:
print(ccolors.ANSI_RED, 'Maximum number of {:<.0f} coupling iterations reached'.format(self.maxCouplIter), ccolors.ANSI_RESET)
return couplIter
+
+ def RunPolar(self, alphaSeq):
+
+ import math
+
+ self.iSolver.printOn = False
+ self.vSolver.printOn = False
+
+ coeffTable = np.empty((2,len(alphaSeq)))
+
+ for ind, alpha in enumerate(alphaSeq):
+ self.iSolver.pbl.update(alpha*math.pi/180)
+
+ self.Run()
+
+ # Collect Coeff
+
+ coeffTable[0,ind] = self.iSolver.Cl
+ coeffTable[1,ind] = self.vSolver.Cdt
+
+ plt.plot(coeffTable[0,:], coeffTable[1,:], 'x-')
+ plt.xlabel('$c_l$ (-)')
+ plt.ylabel('$c_d$ (-)')
+ plt.show()
+
+
+