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[Getfem-users] Multiple Dirichlet cond. bricks in a 2D Stokes flow probl

From: Iago Barbeiro
Subject: [Getfem-users] Multiple Dirichlet cond. bricks in a 2D Stokes flow problem
Date: Thu, 26 Jun 2008 08:34:33 -0300

Dear Getfem users,

Iwould like to solve the 2D Stokes flow around a half cylinder with symmetry and Dirichlet inlet condition.

I started building my domain with a simple unit square structured mesh, in which  I applied  this  geometric transformation:


that gives the following result:

 ______                      __
 |          |                  /        \
 |          |     ->       /      _      \
 |_____ |              |___/    \___|
                                   |-|         Rcy
                                   |------- |   Rex

Using the test example "" I was able to solve this problem with this set of boundary conditions:

Body (half cylinder inside) : Homogeneous Dirichlet (no-slip)
Inlet  (half circular exterior boundary): Non Homogeneous Dirichlet (U=1i+0j)
Botton (two straight segments): Homogeneous Neumann

This case has given me good results, but THEN
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