Learning Forum

[948185722]

When using the patch function in Fluent to specify the second phase volume fraction of the created region, it always fails (when creating the shape of the region as Hex, it fails, while sphere or cylinder shapes succeed). When specify other parameters,such as pressure, it is normal. Is there anyone have encountered this problem before. If needed, I can upload the cas file.

[Rob]

You can't patch the region or you can't create the region?

[948185722]

I can create the region,the region is shown in the picture.I can't patch the region using  volume fraction ,when i check the volume fraction contour after execute the patch, the contour show  the volume fraction of second phase in all fluid domain is zero.

[Rob]

What initial condition did you set? It should work as you have a region with a finite volume. 

[948185722]

this case has two  phases, one is air, the other one is water(liq) and use the multiphase model. The turbulent model is k-e realizable. this is a steady simulation.

[Rob]

What did you set as the initial condition? Ie standard (if so what values) or hybrid?