Fluent or CFX if Ma >5 ?
 

Hi,

If I want to simualte a case with Ma >5, which software is better, Fluent or CFX? Or another one? Thanks.

yflin

Re: Fluent or CFX if Ma >5 ?
 

Hi,

I heard that the energy equation is buggy in CFX. This can be tested on an simple throttle where enthalpy should be constant but it's not with CFX.

I repeat: This is what I heard but I haven't tested on my own.

If true, you'd prefer Fluent for Ma > 5

- Alan

Re: Fluent or CFX if Ma >5 ?
 

Certainly Fluent is the best, if Ma>5 then it can involve a thicker turbulent BL that SST (code CFX employs) many not be as effective as RNG k-E Method (code Fluent Employs).

Re: Fluent or CFX if Ma >5 ?
 

Or of course you could use STAR-CCM+ which has got a nice coupled solver and both SST and K-E

Re: Fluent or CFX if Ma >5 ?
 

Try the following two CFD tools that ESI-CFD offers:

CFD-FASTRAN: Developed for high speed aerodynamics http://www.esi-group.com/SimulationS...e/CFD_Fastran/

PAM-FLOW: Developed for high speed flows and aero-acoustics http://www.esi-group.com/SimulationS...ero_acoustics/