[mr_fluent]

I am wondering about one question.
Lets say i have a cartesian mesh domain, whose smallest cell size is 1E-4meters.

And if i have maximum velocity in domain aroun say 100m/s.

And in momentum equations if i am treating convection terms as explicit but diffusion terms fully implicit. How do i decide what maximum time step size i could use.

Is there any pointers where i could find a definitive formula to use in this case.