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moving a particle through the laminar flow

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Hi
I want to simulate the problem in which a sphere moves through a fluid and study its time dependent profile
but I can't move the sphere anyway. I used the moving boundary condition for particle walls and gave it velocity, but when I animate the velocity the sphere stands and does not move.
I think it is performed by "moving mesh" or "deformed geometry" but I don't know how it is.
comsol V.4.3
can you help me?
Thanks!

3 Replies Last Post 12 feb 2014, 17:02 GMT-5

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Posted: 1 decade ago 9 feb 2014, 18:24 GMT-5
no reply?
it's very important for me
please!
no reply? it's very important for me please!

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Posted: 1 decade ago 10 feb 2014, 06:46 GMT-5
Hi Hojjat,
the moving mesh allows only to move the grid, if you want to perform an interaction between a solid and a fluid you should use the Fluid-Structure Interaction physics.
It has the equations and features for fluid-structure interaction, solving for the displacements, fluid velocity, and fluid pressure.
Have a good work.

--
Marino Miccio
Chemical Engineer
marinomiccio.wix.com/home
Hi Hojjat, the moving mesh allows only to move the grid, if you want to perform an interaction between a solid and a fluid you should use the Fluid-Structure Interaction physics. It has the equations and features for fluid-structure interaction, solving for the displacements, fluid velocity, and fluid pressure. Have a good work. -- Marino Miccio Chemical Engineer http://marinomiccio.wix.com/home

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Posted: 1 decade ago 12 feb 2014, 17:02 GMT-5
Thanks!
you are right!
but if you want to make a deformed 2D geometry in which a sphere moves freely within a rectangular, what would you do?
Thanks! you are right! but if you want to make a deformed 2D geometry in which a sphere moves freely within a rectangular, what would you do?

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