How to calculate total area of a range of pressure

Jimmyhanchn · November 5, 2017, 02:53

I can calculate pressure on any surface, but I would like to calculate total area of any range of pressure by CFX. For example, I have the pressure pattern or pressure contour, I want to know the total area of pressure from 1Pa to 2Pa. How can I do that? CFX post can get this result, right?

ghorrocks · November 5, 2017, 04:01

In CFD-Post, define a contour object with the contour lines you want. Then define a user surface using the contour lines as the method.

Jimmyhanchn · November 5, 2017, 19:08

Thank you so much for your reply, check my steps plz, if I understand your suggestion clearly.
step1, define a new contour and value range use `user specified`
step2, define a `user surface` and method select from the contour which is defined in step1
step3, use calculators`s function calculator and select area function and location `user surface` which is defined in step2
an question. `#of contours` and `contour level` value is not important in this calculation,right?
Thank you for your kindness!

Jimmyhanchn · November 5, 2017, 19:10

I need your help really.

ghorrocks · November 6, 2017, 01:13

That sounds about right. Why don't you just try it and see if it works?

Jimmyhanchn · November 6, 2017, 18:25

Quote:

Originally Posted by ghorrocks

That sounds about right. Why don't you just try it and see if it works?

I have tried it, but I dont know the result is correct or not. anyway, I can find the way to check it. Thank you for your time.

November 5, 2017, 02:53	How to calculate total area of a range of pressure	#1
Jimmyhanchn Member Jimmy Join Date: Sep 2016 Location: Japan Posts: 38 Rep Power: 9	I can calculate pressure on any surface, but I would like to calculate total area of any range of pressure by CFX. For example, I have the pressure pattern or pressure contour, I want to know the total area of pressure from 1Pa to 2Pa. How can I do that? CFX post can get this result, right?

November 5, 2017, 04:01		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,705 Rep Power: 143	In CFD-Post, define a contour object with the contour lines you want. Then define a user surface using the contour lines as the method. Jimmyhanchn likes this.

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November 5, 2017, 19:08		#3
Jimmyhanchn Member Jimmy Join Date: Sep 2016 Location: Japan Posts: 38 Rep Power: 9	Thank you so much for your reply, check my steps plz, if I understand your suggestion clearly. step1, define a new contour and value range use `user specified` step2, define a `user surface` and method select from the contour which is defined in step1 step3, use calculators`s function calculator and select area function and location `user surface` which is defined in step2 an question. `#of contours` and `contour level` value is not important in this calculation,right? Thank you for your kindness!

November 5, 2017, 19:10		#4
Jimmyhanchn Member Jimmy Join Date: Sep 2016 Location: Japan Posts: 38 Rep Power: 9	I need your help really.

November 6, 2017, 01:13		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,705 Rep Power: 143	That sounds about right. Why don't you just try it and see if it works?