Thanks for the reply, both Jed and Matthew. However, I am still a bit
unsure on a small detail:
I have created a 3D DMDA with ndof = 4, one for each velocity component
(u,v,w) and one for the pressure (p). I only solve a Poisson equation to
correct p, the velocities are solved explicitly.
For your pressue Poisson solve, you can use DMDAGetReducedDMDA to generate
a DMDA with only 1 dof. This reduced DMDA will have the same parallel
layout as your DMDA with 4 dofs.
See
http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/DM/DMDAGetReducedDMDA.html
Cheers,
Dave
On 15
Hi,
I am making a new, simple incompressible CFD code. I have created a grid
as a 3D DMDA, with ndof=4, one dof for each velocity component (u,v,w)
and one for the pressure (p). Currently I am creating a forward Euler
step, where the velocities are updated based on the velocities and
On Wed, Oct 8, 2014 at 3:00 PM, Håkon Strandenes haa...@hakostra.net
wrote:
Hi,
I am making a new, simple incompressible CFD code. I have created a grid
as a 3D DMDA, with ndof=4, one dof for each velocity component (u,v,w) and
one for the pressure (p). Currently I am creating a forward
Håkon Strandenes haa...@hakostra.net writes:
Hi,
I am making a new, simple incompressible CFD code. I have created a grid
as a 3D DMDA, with ndof=4, one dof for each velocity component (u,v,w)
and one for the pressure (p). Currently I am creating a forward Euler
step, where the
