read a list of point in a python script to define a set of points with Dirichlet boundary conditions (follow up)

[Lesage,Anne Cecile J]

Dear all

 

If I want to define a set of points with Dirichlet boundary conditions on a scalar unknown (pressure), are the following python script lines correct (using numpy here)?

 

import numpy as np

 

DPB = 2  # dirichlet on pressure brain

print('Read DIRICHLET boundary condition cranio');

# read dirichlet conditions on pressure

filecranio = open('craniopdir.txt', 'r') # 'r' = read

pidcranio = np.loadtxt(filecranio,dtype=int)

#print(pidcranio)

filecranio.close()

fcranio=meshb.faces_from_pid(pidcranio)

meshb.set_region(DPB,fcranio)

 

 

mfpb_ = gf.MeshFem(meshb, 1)

mfpb_.set_classical_fem(press_fem_order)

keptdofs = np.arange(mfpb_.nbdof())

keptdofs = np.setdiff1d(keptdofs, mfpb_.basic_dof_on_region(DPB))

mfpb = gf.MeshFem("partial", mfpb_, keptdofs)

 

How to set up that on these faces/nodes the pressure is non zero (p0= atmospheric pressure)?

 

Thank you

Regards

Anne-Cecile

 

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