Time step size
 

Hi

Can any body explain me what exactly the time step size in star-ccm means and how it is related to physical time.First time i am simulating transient heat transfer process.

Thanks in advance
srinivas

hello,

time step x number of time step = physical time

regards

Hi Bengy
Thanks for the reply.But my question is what is the time step exactly means?

Thanks

hi,

but you also asked how it is related to physical time:)

regards

Y aur true but my primary interest is to know what exactly time step physically means

Thanks

Courant number, look at this and you will understand how to chose the time step.
Maybe I'm wrong but I think one timestep is like a steady run of the simulation with the boundary conditions which you have at this time.

correct me if I wrong, but I think that we have to choose time step that courant number is < 7 ( or even 10 - max).

regards

Lower 1 or when some mesh cells are not good (typical ccm mesh :D) you have to check the other scalars.