def sourceVortexPanel_solve(self, Vinduced, evaluationPoint='self'):
'''
'''
# Defining collocation Point
self.source_collocationPoint = collocationPoint(self.panelStart, self.panelEnd, self.normal)
self.vortex_collocationPoint = collocationPoint(self.panelStart, self.panelEnd, -self.normal)
# Number of collocation points
n = np.shape(self.collocationPoint)[1]
# Calculate the RHS - Neumann B.C [normal and tangent]
self.sourceVortex_RHS_normal = source2D.RightHandSide(Vinduced, self.normal)
self.sourceVortex_RHS_tangent = vortex2D.RightHandSide(Vinduced, self.tangent)
# Total RHS
self.sourceVortex_RHS = np.concatenate([self.sourceVortex_RHS_normal, self.sourceVortex_RHS_tangent])
# Calculate the influence Matrix
# normal
self.sourceVortex_A_normal = source2D.solve(self.source_collocationPoint, self.panelStart, self.panelEnd, self.normal)
self.sourceVortex_B_normal = vortex2D.solve(self.vortex_collocationPoint, self.panelStart, self.panelEnd, self.normal)
# tangent
self.sourceVortex_A_tangent = source2D.solve(self.source_collocationPoint, self.panelStart, self.panelEnd, self.tangent)
self.sourceVortex_B_tangent = vortex2D.solve(self.vortex_collocationPoint, self.panelStart, self.panelEnd, self.tangent)
# Combined influence matrix
self.sourceVortex_C = np.zeros((n*2,n*2)) #[[1,2],[3,4]]
self.sourceVortex_C[:n,:n] = self.sourceVortex_A_normal # 1
self.sourceVortex_C[:n,n:] = self.sourceVortex_B_normal # 2
self.sourceVortex_C[n:,:n] = self.sourceVortex_A_tangent # 3
self.sourceVortex_C[n:,n:] = self.sourceVortex_B_tangent # 4
#start = time.time()
# Solve the panel Menthod, combined B.Cs
self.sourceVortex_SigmaGamma = np.linalg.solve(self.sourceVortex_C, self.sourceVortex_RHS)
#print 'sourceVortexPanel:' + str(time.time() - start)
#self.sourceVortex_SigmaGamma = np.linalg.lstsq(self.sourceVortex_C, self.sourceVortex_RHS)
self.sourceVortex_sigma = self.sourceVortex_SigmaGamma[:n]
self.sourceVortex_gamma = self.sourceVortex_SigmaGamma[n:]
# To show no transpiration
if evaluationPoint is 'self':
evaluationPoint_source = self.source_collocationPoint
evaluationPoint_vortex = self.vortex_collocationPoint
else:
evaluationPoint_source = evaluationPoint
evaluationPoint_vortex = evaluationPoint
# Calculate induced velocity on body
self.sourceVortex_Vsorc = source2D.evaluate(self.sourceVortex_sigma, evaluationPoint_source, self.panelStart, self.panelEnd)
self.sourceVortex_Vvort = vortex2D.evaluate(self.sourceVortex_gamma, evaluationPoint_vortex, self.panelStart, self.panelEnd)
self.sourceVortex_V = self.sourceVortex_Vsorc + self.sourceVortex_Vvort
def vortexPanel_solve(self, Vinduced, evaluationPoint = 'self'):
'''
Solve potential flow using vortex panels
'''
# Defining collocationPoints: slightly inside
self.vortex_collocationPoint = collocationPoint(self.panelStart,self.panelEnd, -self.normal) # inside the body
# Calculate RHS - zero tangential
self.vortex_RHS = vortex2D.RightHandSide(Vinduced,
self.tangent)
#start = time.time()
# Calculate the influence matrix
self.vortex_A = vortex2D.solve(self.vortex_collocationPoint,
self.panelStart,
self.panelEnd,
self.tangent)
#print 'vortex:' + str(time.time() - start)
#start = time.time()
# Solve the vortex Method. Ax=RHS
self.vortex_gamma = np.linalg.solve(self.vortex_A, self.vortex_RHS)
#print 'vortex:' + str(time.time() - start)
#start = time.time()
# To show no transpiration
if evaluationPoint is 'self':
evaluationPoint = self.vortex_collocationPoint
# Calculate induced velocity on body
self.vortex_V = vortex2D.evaluate(self.vortex_gamma,
evaluationPoint,
self.panelStart,
self.panelEnd)
