Reply To: Inquiry regarding treatment of adiabatic surfaces in Fluent

[Saurabh R Patil]

Hi,

The handling of adiabatic surfaces in Fluent is often predicated on the assumption of zero heat transfer. However, obtaining zero heat transfer can be difficult numerically due to a variety of factors such as discretization errors, solver settings, and numerical approaches. To address instances when values approach zero, Fluent utilises a tiny numerical tolerance. This is done to avoid numerical instability and to ensure stable convergence. While this number is incredibly tiny and in most practical instances it is zero.

Hope this helps you.

Thank you.