Fluent or CFX if Ma >5 ?

October 20, 2005, 11:25

Hi,

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

yflin

October 20, 2005, 15:11

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

October 27, 2005, 06:24

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).

October 28, 2005, 12:19

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

October 28, 2005, 18:55

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/

October 20, 2005, 11:25	Fluent or CFX if Ma >5 ?	#1
yflin Guest Posts: n/a	Hi, If I want to simualte a case with Ma >5, which software is better, Fluent or CFX? Or another one? Thanks. yflin

October 20, 2005, 15:11	Re: Fluent or CFX if Ma >5 ?	#2
Alan Guest Posts: n/a	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

October 27, 2005, 06:24	Re: Fluent or CFX if Ma >5 ?	#3
Arunvel Thangamani Guest Posts: n/a	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).

October 28, 2005, 12:19	Re: Fluent or CFX if Ma >5 ?	#4
Ben Guest Posts: n/a	Or of course you could use STAR-CCM+ which has got a nice coupled solver and both SST and K-E

October 28, 2005, 18:55	Re: Fluent or CFX if Ma >5 ?	#5
han toss Guest Posts: n/a	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/

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