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Problem with air as a fluid ;-)

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Dear sir,

While solving my model, I am getting an error that the "Last time step is not converged" if the air is taken as a fluid whereas it is showing the results when air is taken as a solid.

What should I do to get the solution with air as a fluid??

1 Reply Last Post 2013年3月15日 GMT-4 07:02
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 2013年3月15日 GMT-4 07:02
Hi
you need to explain a bit more what you are doing, which dimension , which physics, something about the model
A fluid and a solid are quite different in their properties and the way to approach simulations, even if COMSOL is doing a lot to unify everything.

fluids needs ideally the CFD modules or with the MEMS, but certain simplification to the model can be done fully in "solid" too

--
Good luck
Ivar
Hi you need to explain a bit more what you are doing, which dimension , which physics, something about the model A fluid and a solid are quite different in their properties and the way to approach simulations, even if COMSOL is doing a lot to unify everything. fluids needs ideally the CFD modules or with the MEMS, but certain simplification to the model can be done fully in "solid" too -- Good luck Ivar

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