PETSc-FEM simulation of flow in cubic cavity

Flow in a square cavity has been modelled using the free CFD code PETSc-FEM http://www.cimec.org.ar/petscfem. The cubic cavity problem is similar to flow in a square cavity (http://www.cfd-online.com/Wiki/2-D_laminar/turbulent_driven_square_cavity_flow
) but in 3D. All faces of the cube have non-slip boundary condition an the top is set to unit velocity in x direction. The flow is incompresible. As the animation progress we se first in colours the mesh and the domain decomposition of the problem (in fact the computations have been actually done in a finer mesh, but in order to visualize the domain decomposition we show here a coarser mesh). Then we see he streamlines near the surface of the cube,
the streamlines in the central rotating core, streamlines at several span stages, animated colormaps of |u| at several lateral (span) stages, colormaps of |u| at several heights, isosurfaces of vorticity.

Category:

Science & Technology

Tags:

• fem
• cfd
• cubic
• cavity
• fluid
• mechanics

[mariostorti]

It`s Domain Decomposition with a predonditioner developed by us (Interface Strip Preco, look up in Int J Num Meth Engng)

[petscddm]

What is your preconditioner ?