when I simulate the bubbles move up in the water, the gradp forcemodel does not work fine. The bubbles' velocity is too big, though the drag forcemodel is included. Another problem is bubbles. may fall down in the end of the iteration.
the gradp forcemodel can be weather used to simulate the buoyant effect?
| Attachment | Size |
|---|---|
 The Solver source code | 199.81 KB |
| the case settings | 2.81 MB |
cgoniva | Thu, 02/07/2013 - 17:26
Hi,
Hi,
if gradP includes buoyancy depends on the formulation of p (i.e. is there a gradient in your p field due to gravity?)
does it work with model type B and Archimedes buoyancy?
Cheers,
Chris
openfoam | Fri, 02/22/2013 - 08:28
Hi cgconiva
I have upload my solver source code and the case settings blew the first content.Bubbles' movement are out of order, anther problem is that some bubbles can cross the draft tube wall.
Thanks anyway, I am looking forward your answer.
Zhao
openfoam | Fri, 02/22/2013 - 07:47
Hi cgoniva
Thank you, the p field is not include gravity effect. Now I add gravity effect in the p formulation and compile the solver. When I run the simulation wihout drag force, I think the gradP force works fine, but if I add the drag force, bubbles don't move up and their movement become out of order. I don't kown what is wrong with it, It's the solver problem or wrong initial conditions or any other problem?
Here is my solver source code, and some case settings, I will be very appreciate if you help me to solve this problem.