time step incompressible flow
 

I want compute an unsteady incompressible flow expluctly. I gave the courant number but you obtain this message :

"You cannot use global time stepping to compute unsteady incompressible flows"

How to run?

thanks

Re: time step incompressible flow
 

In "unsteady formulation", you must choice "1st order implicit" or "2nd order implicit"

Hello

I have a similar problem.

I'm doing a transient, compressible (UDF for density and speed of sound), FSI problem with the use of system coupling. I would like to simulate a pressure wave hitting an object, but i get the same error as the topic creator, even thou my fluid is compressible...help?

Will implicit time formulation, for the explicit density-based solver simulate properly the above mentioned phenomena?

thanks in advance for any help

Hello,

did anyone get rid of this error? I got the same one although I want to simulate an unsteady compressible case!

I also got the same error. If anyone know, please help us out