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Old   February 23, 2010, 18:51
Default Fluent or CFX
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Mehdi
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Dear friends
In your opinion which one is better to solve problem of fluid mechanics
CFX
Fluent
Tnx
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Old   February 23, 2010, 19:04
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Quote:
Originally Posted by MEF781 View Post
Dear friends
In your opinion which one is better to solve problem of fluid mechanics
CFX
Fluent
Tnx
Neither one.
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Old   February 24, 2010, 06:31
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well that was a useful comment!

CFX and Fluent are both pretty similar now they are under the ANSYS umbrella and both can now operate out of work bench.

I personally find CFX easier to use but solver wise they are pretty similar now in most instances.

It depends if you have a specific problem in mind I might be able to help further.

But most of the time it can come down to a matter of which one you find easiest to use or are most familiar with.
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Old   February 25, 2010, 01:54
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dear friends:
Do you mean you are a new to the computational fluid? I think fluet is a more general software, CFX has some speciall capbility for the turbin .Both of them are well documented and can be grasped easily.
thank you
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Old   February 26, 2010, 05:43
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I know that quite a number of Formula 1 teams use Fluent (or did recently).
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Old   February 26, 2010, 06:23
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Yes they still do, but highly customised codes of FLUENT, but it is excellent to look at turbulence and seperation. FLUENT for years has been the CFD code of choice for the f1 industry before it was bought by ANSYS.

But as I said before CFX now has incorporated much of the FLUENT code as they are both now owned by ANSYS so it pretty much up to personal preference which platform you would prefer to use.

Gambit which is used in conjunction with FLUENT is a bit of a pain mind you.
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Old   March 1, 2010, 07:19
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I thought CFX is a pressure based code, whereas FLUENT is density based. For super/hypersonics, this is of importance since the density jump across a shock is limited (Hugoniot, 6 for gamma=1.4), whereas the pressure jump can be any value. Solver stability is therefore increased when using a density based code in such circumstances.

If this is not how it works, please let me know, I'm not a CFD guru yet !
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Old   March 3, 2010, 04:31
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I am surprised at some of these answers, surely it depends on the application? What is the indended use?
Of the two, I have only used Fluent in the past so don't feel qualified to make a judgement either way.
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Old   March 9, 2010, 13:58
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Here is a link showing a comparison of all ANSYS products for version 12.1. Fluent is both a pressure and density solver. You just need to select which one you want based on your model. While CFX is purely a pressure based solver. Which to me would be a limitation if you wanted to run high speed compressible flows. I know Fluent is the best choice with respect to combustion. But eventually it won't matter since they will eventually be merged in ANSYS CFD.

http://www.ansys.com/assets/brochure...ities-12.1.pdf
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