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-   -   VOF simulation free surface caused by gas inject (http://www.cfd-online.com/Forums/fluent/41738-vof-simulation-free-surface-caused-gas-inject.html)

rensb July 17, 2006 02:19

VOF simulation free surface caused by gas inject
 
hi,my friends

i have read a article about the vof simualtion, the case is there is a ladle full of water, and behind there is xoygen lance ,the problem is simualtion the free surface caused by oxygen lance injection. how to set the interface of gas and liquid .

thank you for your advice

Aniss July 18, 2006 09:06

Re: VOF simulation free surface caused by gas inje
 
i have the same probleme between vap/liq interface in bubble cavitation collapse?!!!!

J.Gimbun July 19, 2006 16:27

Re: VOF simulation free surface caused by gas inje
 
I dont really understand what is your problem, but if you wana simulate a gas entrainment on the liquid surface just use initialise patch. Good luck.

rensb July 19, 2006 19:16

Re: VOF simulation free surface caused by gas inje
 
the problem is in the clinder ladle full of water(half height),and above the water ,in the center of the ladle there lied an laval nozzle which spray oxygen and so on, the spray gas will inject into water and caused the water move, how to simulate this case the free surface is cared for ,and after patch ,it is difficult to converge,how to solve. thank your advice.

J.Gimbun July 20, 2006 04:45

Re: VOF simulation free surface caused by gas inje
 
Definietly some difficulty in getting convergence. In the initial stage try small time step and few iteration/time step. Later on adjust it to be much higher and more time step to get convergence every time step.


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