time step
 

hi friends i am new guy for the cfd . I have a doubt? How to calculate time step and physical time in star ccm

Hi,

Your time step and physical time are your inputs of your problem.
I don't really understand your question.

Thomas

Courant number and velocity of the fluid or other.. what do you want to do?

muthuvel
 

my question is how to calculate the time step and phsical time for any problem

As far as I know it isn't possible to calculate it for any problem.
For stream problems you can use the courant number - there you know your time-step.
The time you know because of your velocity there.
How it is on heat transfer problem I don't know.