Testing a python file as a direct copy&paste

2. setting the domain size for the problem to be solved

domain_size = 2

1. 2. ATTENTION: here the order is important

1. including kratos path

kratos_libs_path = '../../../../libs' ##kratos_root/libs

1. kratos_libs_path = 'C:/kratosR1/libs' ##kratos_root/libs

kratos_applications_path = '../../../../applications/' ##kratos_root/applications import sys sys.path.append(kratos_libs_path) sys.path.append(kratos_applications_path)

1. importing Kratos main library

from Kratos import * kernel = Kernel() #defining kernel

1. importing applications

import applications_interface applications_interface.Import_IncompressibleFluidApplication = True applications_interface.ImportApplications(kernel, kratos_applications_path)

1. 1. from now on the order is not anymore crucial

from KratosR1IncompressibleFluidApplication import *

1. defining a model part

model_part = ModelPart("FluidPart");

1. 1. importing the solver files and adding the variables

import incompressible_fluid_solver incompressible_fluid_solver.AddVariables(model_part)

1. adding of Variables to Model Part should be here when the "very fix container will be ready"

1. reading a model

gid_io = GidIO("cavity2d",GiDPostMode.GiD_PostBinary)

1. 1. gid_io.ReadMesh(model_part.GetMesh())

gid_io.ReadModelPart(model_part) gid_io.WriteMesh((model_part).GetMesh(),domain_size,GiDPostMode.GiD_PostBinary); print model_part

1. the buffer size should be set up here after the mesh is read for the first time

model_part.SetBufferSize(3)

1. 1. add Degrees of Freedom to all of the nodes

incompressible_fluid_solver.AddDofs(model_part)

1. creating a fluid solver object

fluid_solver = incompressible_fluid_solver.IncompressibleFluidSolver(model_part,domain_size) fluid_solver.laplacian_form = 2; fluid_solver.predictor_corrector = True fluid_solver.vel_toll = 1e-3 fluid_solver.time_order = 2 fluid_solver.echo_level = 0

1. pILUPrecond = ILU0Preconditioner()
2. fluid_solver.pressure_linear_solver = BICGSTABSolver(1e-9, 5000,pILUPrecond)

pDiagPrecond = DiagonalPreconditioner() fluid_solver.velocity_linear_solver = BICGSTABSolver(1e-9, 5000,pDiagPrecond) fluid_solver.pressure_linear_solver = BICGSTABSolver(1e-9, 5000,pDiagPrecond)

1. 1. fluid_solver.pressure_linear_solver = SkylineLUFactorizationSolver();

fluid_solver.Initialize()

1. settings to be changed

Re = 100.0 nsteps = 200 output_step = 1

Dt = 1000.0/Re if(Dt > 0.1):

   Dt = 0.1

out = 0 for node in model_part.Nodes:

   node.SetSolutionStepValue(VISCOSITY,0,1.0/Re)

for step in range(1,nsteps):

   print "line49"

   time = Dt*step
   print time
   model_part.CloneTimeStep(time)

   print "qui"

   print time
   #print model_part.ProcessInfo()[TIME]

   #solving the fluid problem
   if(step > 3):
       fluid_solver.Solve()

   print "li"

   #print the results
   if(out == output_step):
       gid_io.WriteNodalResults(PRESSURE,model_part.Nodes,time,0)
       gid_io.WriteNodalResults(VELOCITY,model_part.Nodes,time,0)
       gid_io.WriteNodalResults(PRESS_PROJ,model_part.Nodes,time,0)
       gid_io.WriteNodalResults(CONV_PROJ,model_part.Nodes,time,0)
       gid_io.WriteNodalResults(NODAL_AREA,model_part.Nodes,time,0)
       gid_io.WriteNodalResults(VISCOSITY,model_part.Nodes,time,0)
       out = 0
   out = out + 1

node = model_part.Nodes[1]

print node