# How can I calculate Swirl number at different heights in a column

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 October 11, 2011, 11:10 How can I calculate Swirl number at different heights in a column #1 Senior Member   Join Date: Jun 2011 Posts: 108 Rep Power: 6 I have a cylindrical column with swirling flow. I want to calculate swirl number at different positions along the height of the column. How can I calculate it using Fluent12.1 can any one help please? Thank you.

 October 18, 2011, 07:51 #2 Member   anonym Join Date: Mar 2009 Posts: 65 Rep Power: 8 I think the swirl nr is not a default value in Fluent. So first go to Define/Custom Field Functions Than, you should creat planes and in the Report menu, you can check at each plane. mali28 likes this.

November 4, 2011, 12:18
#3
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Quote:
 Originally Posted by Laci I think the swirl nr is not a default value in Fluent. So first go to Define/Custom Field Functions Than, you should creat planes and in the Report menu, you can check at each plane.

Thank you that solved my problem.

 December 3, 2012, 11:16 #4 New Member   Join Date: Nov 2012 Posts: 5 Rep Power: 4 mali28: how did you define your swirl number? I mean did you use custom field function? if so what is your equation? Please let me know. Thanks.

December 3, 2012, 15:17
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Quote:
 Originally Posted by dulalerbap mali28: how did you define your swirl number? I mean did you use custom field function? if so what is your equation? Please let me know. Thanks.
See the instructions of calculating the swirl number below:

http://cape-forum.com/index.php/topic,458.msg485.html

 December 3, 2012, 16:08 #6 New Member   Join Date: Nov 2012 Posts: 5 Rep Power: 4 mali28: Thank you for your prompt rely. I went to that link but there is no pdf file there. Could you check again. Thanks again.

December 3, 2012, 16:30
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Quote:
 Originally Posted by dulalerbap mali28: Thank you for your prompt rely. I went to that link but there is no pdf file there. Could you check again. Thanks again.

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