[afnene]

Please I am simulating transient natural convection using fluent, and I would really appreciate your help.
is it better to use Piso or Simple in pressure-velocity coupling?
What is the meaning of skeweness correction and neighbor coupling in piso scheme?

I put the default relation factor to the half default values....is it the best choice?

In solution methods, there is an option where the relaxation factor is set to 0.75 by default, do I need to change it?

thank you for your help in advance.