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Old   September 30, 2010, 01:43
Unhappy Fluent or Cfx
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ResH
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Could someone help me to choose between Fluent and Cfx.
I am doing a project on Airflow and Cooling in a DataCenter.
Which will be better for airflow simulation in Datacenter?
Which will give me the most accurate solution?
Please let me know...
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Old   October 3, 2010, 21:08
Default Data Center CFD software comparison
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Jason van Gaal
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Hi Resh,

I don't want to be repetitive so take a look at the response that I posted on another board.

Data Center Simulation

Hopefully this answers your questions. Feel free to email me at jvangaal@planus.ca if you have anymore. I can always find time to talk about CFD analysis. Just remember for CFD garbage in = garbage out. So no matter what software you choose, be precise.
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Old   October 4, 2010, 01:37
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Thank u Mr.Jason for your comments.
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Old   October 7, 2010, 21:52
Default Fluent
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Edward G. Schaub
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Both are finite volume flow solvers with the same suite of turbulence models, but I believe Fluent has higher order discretization methods whereas CFX has only 2nd order upwinding. I really don't believe you need to go larger than 2nd order. CFX may also have some automeshing internal out of Design Modeler, but I wouldn't trust it. I tend to be biased towards fluent since I've used it for over 15 years. If you're using it within the ANSYS package, you're going to have through the same mesh generator, but with Fluent it may be easier to set up the boundary conditions such as surface fluxes. Also, with v.13 of ANSYS, there will just be ANSYS/CFD, no Fluent or CFX.
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Old   October 9, 2010, 01:57
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Thank you Mr.Edward for your comments.
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Old   October 19, 2010, 13:28
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I think that there are several discussions at this site about this. However, I am not sure about the best way to search them out.

One discussion I was involved in is at
Fresher guy seeking some help

I actually had to make this decision about choice of software for my company early this year and recommended CFX. My understanding is that CFX is fully integrated into Workbench while Fluent is not. Except for some specialized work such as shocks or multiphase, then Fluent may not be not needed. To understand the modelling capabilities of each software, see the capabilities chart for 12.0 at
http://www.ansys.com/assets/brochure...ities-12.0.pdf

The capabilities chart for 13.0 is at
http://www.ansys.com/assets/brochure...ties-chart.pdf

None of this will be an issue in the next release (Version 13.0) when Workbench will have a single CFD package, as another user stated.

Correction, the ANSYS folks just visited and indicated that there will not be a single CFD package until Version 14.0.

Good luck!

Last edited by Jade M; November 16, 2010 at 14:41.
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Old   October 21, 2010, 01:37
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Thank u
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Old   October 22, 2010, 11:19
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Michael P. Owen
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Quote:
Originally Posted by egschaub View Post
Both are finite volume flow solvers with the same suite of turbulence models, but I believe Fluent has higher order discretization methods whereas CFX has only 2nd order upwinding. I really don't believe you need to go larger than 2nd order. CFX may also have some automeshing internal out of Design Modeler, but I wouldn't trust it. I tend to be biased towards fluent since I've used it for over 15 years. If you're using it within the ANSYS package, you're going to have through the same mesh generator, but with Fluent it may be easier to set up the boundary conditions such as surface fluxes.
You only think it's easier to apply boundary conditions in FLUENT because you are more familiar with it. Personally I am a CFX user and find the FLUENT interface byzantine.

Quote:
Also, with v.13 of ANSYS, there will just be ANSYS/CFD, no Fluent or CFX.
Ed
This is incorrect. R13 is due out next month, and FLUENT and CFX will definitely still be distinct. It will be several years before the advent of the ANSYS CFD unified product (right now "ANSYS CFD" is merely a licensing package that gives you access to both codes), and the individual codes will continue to be supported for some time after that. It is probably at least 5 years before the individual codes become unsupported and users will be transitioning to the unified code.
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Old   November 13, 2010, 02:21
Unhappy After EEE
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ResH
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I am a final year EEE student.
my collge assigned me a project on CFD in Datacenter.
Initially i found CFD to be very difficult, but now I am intersted to continue in this field.
I wanted to do Masters in this field, but I dont have any idea about the Masters available in this area and what exactly I should go for?
Another problem is that whether i should continue in this Datacenter field or since I am EEE student should I do something in my field.
I dont know what to do, I dont know which is the best in the industry?
Please could someone help me................
I think I am too late now
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Old   November 19, 2010, 00:48
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Sriram "Rob" Atchutuni
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Resh,
You can do what you want to do with either products. ANSYS Airpak (uses fluent solver) is well suited for this as well.
http://www.ansys.com/products/airpak/default.asp

Also about earlier comment:
ANSYS CFD will give you access to both Fluent and CFX. However, they will be still available seperately as well.
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