Bruce Scott TOK wrote:
Gerard Westendorp wrote:

| I developped a free CFD program, called "CellFlow":
|
| http://www.xs4all.nl/~westy31/CellFlow/CellFlow.html
|
| A funky feature is that it can 4 dimensional flow.
|
| Apart from that, I am not sure if it actually better than other free CFD
| codes. My guess it is probably quite handy if you have a simple
| geometry.

Looks good though I guess it windows-only. What's your numerical scheme?


Thanks.
My numerical scheme is perhaps a bit unusual. It originated from
acoustic simulations, based on electric circuit equivalents. I also have
a web page on that:

http://www.xs4all.nl/~westy31/Electric.html

When I was doing acoustic simulations quite a few years ago, I was
wondering if I could adapt them so they also did Navier Stokes. The
acoustics were networks of masses an springs, or inductors and capacitors.
Eventually, I got it to work, I was quite pleased when i saw the first
vortex appear (acoustics has no vortices). So my code was always
time-dependent and compressible from the start.
A disadvantage is that the acoustic time step is very small, it is about
dx/c, so for a cell of 1 cm and c=300, you have timesteps of 30
microseconds.
But if you are interested in more or less incompressible flow, you might
as well drastically decrease the speed of sound in you model. This is
what I usually do, the velocities will be at something like Mach 0.1 in
the fluid.

Gerard