/[escript]/trunk/escript/py_src/flows.py
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revision 1518 by artak, Fri Apr 18 02:36:37 2008 UTC revision 1519 by artak, Tue Apr 22 03:45:36 2008 UTC
# Line 63  class StokesProblemCartesian(Homogeneous Line 63  class StokesProblemCartesian(Homogeneous
63           self.vol=util.integrate(1.,Function(self.domain))           self.vol=util.integrate(1.,Function(self.domain))
64           self.__pde_u=LinearPDE(domain,numEquations=self.domain.getDim(),numSolutions=self.domain.getDim())           self.__pde_u=LinearPDE(domain,numEquations=self.domain.getDim(),numSolutions=self.domain.getDim())
65           self.__pde_u.setSymmetryOn()           self.__pde_u.setSymmetryOn()
66  #         self.__pde_u.setSolverMethod(preconditioner=LinearPDE.ILU0)           self.__pde_u.setSolverMethod(preconditioner=LinearPDE.ILU0)
67                            
68           self.__pde_prec=LinearPDE(domain)           self.__pde_prec=LinearPDE(domain)
69           self.__pde_prec.setReducedOrderOn()           self.__pde_prec.setReducedOrderOn()
# Line 123  class StokesProblemCartesian(Homogeneous Line 123  class StokesProblemCartesian(Homogeneous
123                return True                return True
124            else:            else:
125                return False                return False
126        def stoppingcriterium2(self,norm_r,norm_b,solver='GMRES'):        def stoppingcriterium2(self,norm_r,norm_b,solver='GMRES',TOL=None):
127        if self.verbose: print "%s step %s: L2(r) = %s, L2(b)*TOL=%s"%(solver,self.iter,norm_r,norm_b*self.getTolerance())        if TOL==None:
128                 TOL=self.getTolerance()
129              if self.verbose: print "%s step %s: L2(r) = %s, L2(b)*TOL=%s"%(solver,self.iter,norm_r,norm_b*TOL)
130            self.iter+=1            self.iter+=1
131            if norm_r <= norm_b*self.getTolerance():            
132              if norm_r <= norm_b*TOL:
133                if self.verbose: print "%s terminated after %s steps."%(solver,self.iter)                if self.verbose: print "%s terminated after %s steps."%(solver,self.iter)
134                return True                return True
135            else:            else:
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