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-   -   Contours of density gradient in fluent 5? (http://www.cfd-online.com/Forums/fluent/27588-contours-density-gradient-fluent-5-a.html)

Ricky Wong March 24, 2000 11:18

Contours of density gradient in fluent 5?
 
I'm modeling air jets of various exit geometries which I've previously taken experimental measurements from. As well as comparing quantitative measurements with the CFD I'd like to compare the Schlieren images I took of the test jets with the CFD. Is there a easy way of making Fluent 5.2.3 display the jet as a Schlieren image (changes in density gradient) for direct comparison with my experimental images. Do I need to use User Defined Functions?

thanks for any help

Ricky

p.s. I think the UDF database idea would be a great idea. Although I don't really have anything to contribute to it, it would be al least a starting point for those like myself just starting to think about using them.

vishnu_240 April 19, 2014 08:32

Ho no even after 14 years there is no answer to it, and how will i find it?

shk12345 April 21, 2014 10:04

Quote:

Originally Posted by Ricky Wong
;94026
I'm modeling air jets of various exit geometries which I've previously taken experimental measurements from. As well as comparing quantitative measurements with the CFD I'd like to compare the Schlieren images I took of the test jets with the CFD. Is there a easy way of making Fluent 5.2.3 display the jet as a Schlieren image (changes in density gradient) for direct comparison with my experimental images. Do I need to use User Defined Functions?

thanks for any help

Ricky

p.s. I think the UDF database idea would be a great idea. Although I don't really have anything to contribute to it, it would be al least a starting point for those like myself just starting to think about using them.

I am not sure about the problem what you are saying. But i think that you can take the pressure plots from the fluent and then compare them with your experimental images. Since pressure is directly proportional to density you can compare the results.

Hope that helps

shk

vishnu_240 May 19, 2015 01:39

Yah true, but Fluent itself gives Gradient Density contour.


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