# CFX-Post: Area@iso-surface

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 October 22, 2003, 07:39 CFX-Post: Area@iso-surface #1 Peter Guest   Posts: n/a Hi, I have a quetion about how to calculate the plane area inside a iso-surface. I have a jet flow from a nozzle at different timesteps. But I would like to calculate the plane area inside the iso-surface for 20 m/s. I know where the plane is, but I am unable to get CFX-Post to calculate the area inside the iso- surface. I am trying to make a session file with cel, to extract the area. Any ideas on how to do this ??? Thanks in advance. regards Peter

 October 22, 2003, 08:44 Re: CFX-Post: Area@iso-surface #2 Bob Guest   Posts: n/a Peter, can you define a user surface using the intersection between an isosurface and a plane ? Or can you create a user surface from a contour that is located on the plane and has bounds defined by your iso-surface criteria ? Just a few ideas, no promisses as a collegue is using post at the moment so I can't test them for you ! Bob

 October 22, 2003, 09:36 Re: CFX-Post: Area@iso-surface #3 Peter Guest   Posts: n/a Hi Thanks for the reply. But how can I create a user surface from the intersection between isosurface and plane. When I try to create a user surface the only option I have is a boundary list and location. And in the boundary list there is only the outer boundarias for the domain. Do I have to program it in cel/ccl ??? Hints is welcome. Regards Peter

 October 22, 2003, 09:58 Re: CFX-Post: Area@iso-surface #4 Robin Guest   Posts: n/a Hi Peter, Go with Bob's second suggestion. You can create a user defined surface as a contour level. First, create a contour plot on your plane with 2 contour levels and define the min to be very small and the max value equal to your isosurface value. Now, create a User Surface using the 'From Contour' method and select the appropriate contour and contour level. The User Surface created will now be entirely inside your iso-surface. Regards, Robin

 October 22, 2003, 10:06 Re: CFX-Post: Area@iso-surface #5 Peter Guest   Posts: n/a Hi I can seen that since I only have 5.5 installed and have not seen this option. I need to switch to 5.6. Right ? Regards peter

 October 22, 2003, 11:17 Re: CFX-Post: Area@iso-surface #6 Robin Guest   Posts: n/a Yes. Why are you still running 5.5? -Robin

 October 23, 2003, 01:29 Re: CFX-Post: Area@iso-surface #7 Peter Guest   Posts: n/a Hi, Company has not upgraded yet. Regards Peter

 August 19, 2013, 11:39 #8 New Member   Emily Imdieke Join Date: Apr 2013 Posts: 20 Rep Power: 5 Hello, I was just wondering what type of script you used to export the surface area? I am currently trying to do the same.

 August 19, 2013, 18:17 #9 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 12,714 Rep Power: 99 No need to export. Just use the function calculator and it will give you the surface area of any surface object.

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