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Volume changes with time in laminar two phase flow physic ?

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Hi,

When i try to use the "laminar two phase flow, level set equation", i get a strange phenomena, when i show a movie of the simulation (with time), i can see that the volume of the inner fluid is getting smaller. if i simulate for a longer time, the inner fluid can go smaller until it disappears.

in order to see if the problam is my configurations, or the simulation I opened the design in the model library under CFD module->Multiphase Tutorials->rising_bubble_2daxi (which use the same physic), i tried to simulate this design for a longer time (10 sec) and the drop in this design got smaller and disappeared also ?

does anyone know what causes this and how can i overcome this ?

Thanks in advance,
ofir.

1 Reply Last Post 06.01.2012, 12:40 GMT-5
Lechoslaw Krolikowski

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Posted: 1 decade ago 06.01.2012, 12:40 GMT-5
Hi,
Check www.comsol.dk/community/forums/general/thread/24867/.
BR,
Andrzej
Hi, Check http://www.comsol.dk/community/forums/general/thread/24867/. BR, Andrzej

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