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fluid-fluid interaction

Posted 2010年8月4日 GMT-4 10:30 3 Replies

marina domokhovsky
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Hi, I have a fsi model, however, I also need to add another fluid to the model. So I would have the solid with a layer of fluid 1 surrounding it and then fluid 2 comes in contact with fluid and the structure. I do not know how to add that extra fluid in there, is there a specific module that deals with fluid-fluid interaction.

Thank you, I hope this is clear.

Marina
3 Replies Last Post 2010年8月4日 GMT-4 12:09
Danial Tz
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Posted: 1 decade ago 2010年8月4日 GMT-4 10:38

Hi, I have a fsi model, however, I also need to add another fluid to the model. So I would have the solid with a layer of fluid 1 surrounding it and then fluid 2 comes in contact with fluid and the structure. I do not know how to add that extra fluid in there, is there a specific module that deals with fluid-fluid interaction.

Thank you, I hope this is clear.

Marina


Then I guess you should use Level-set or two-phase flow model to track the boundaries between the fluids. There is a great example in Comsol 3.5a (but not 4), but I don't know where exactly.

Edit: It is called "Two Phase Fluid-Structure Interaction", but I don't have MEMS to check exactly.
[QUOTE] Hi, I have a fsi model, however, I also need to add another fluid to the model. So I would have the solid with a layer of fluid 1 surrounding it and then fluid 2 comes in contact with fluid and the structure. I do not know how to add that extra fluid in there, is there a specific module that deals with fluid-fluid interaction. Thank you, I hope this is clear. Marina [/QUOTE] Then I guess you should use Level-set or two-phase flow model to track the boundaries between the fluids. There is a great example in Comsol 3.5a (but not 4), but I don't know where exactly. Edit: It is called "Two Phase Fluid-Structure Interaction", but I don't have MEMS to check exactly.
marina domokhovsky
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Posted: 1 decade ago 2010年8月4日 GMT-4 11:06
Thank you so much. I actually have version 3.3, I know that 3.5 has that capability, but 3.3 doesnt, I was just trying to figure out if there is another way to do it, so I would not have purchase the new version. Do you know of any other way of doing it?
Thank you so much. I actually have version 3.3, I know that 3.5 has that capability, but 3.3 doesnt, I was just trying to figure out if there is another way to do it, so I would not have purchase the new version. Do you know of any other way of doing it?
Danial Tz
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Posted: 1 decade ago 2010年8月4日 GMT-4 12:09

Thank you so much. I actually have version 3.3, I know that 3.5 has that capability, but 3.3 doesnt, I was just trying to figure out if there is another way to do it, so I would not have purchase the new version. Do you know of any other way of doing it?


If you mean MEMS, you don't need MEMS for this. You need Chemical Engineering Module for two-phase and level-set methods I guess. But, I don't know of any other method to have F-F, except these two in Comsol.
[QUOTE] Thank you so much. I actually have version 3.3, I know that 3.5 has that capability, but 3.3 doesnt, I was just trying to figure out if there is another way to do it, so I would not have purchase the new version. Do you know of any other way of doing it? [/QUOTE] If you mean MEMS, you don't need MEMS for this. You need Chemical Engineering Module for two-phase and level-set methods I guess. But, I don't know of any other method to have F-F, except these two in Comsol.

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