Min value function

Leackim · April 30, 2013, 15:03

Hi,

I am sure my question is obvious, but i didn't manage to find my answer on CFX help or website.
I would like to get all the informations about my streamlines (start from a plane equally spaced) for each one : The min pressure value for example, X,Y,Z start and end coordinates and so on.

The min function value returns the min of the overall and not each min value. of course i could plot each streamline and return min but it's time consuming.
Anyone know how to do it quickly ? Or how to get the min function code in Ansys, because it must calculate all min before returning the smallest one ?

I get same difficulties with x,y,z start and end cordinate : no function available match for this problem

Thank you

ghorrocks · April 30, 2013, 20:35

This is straight forward: Record a CFD-Post session file of you doing the streamline analysis on one streamline, then edit the session file to do it lots of times on all the points.

Leackim · May 1, 2013, 09:13

Thanks for your answer. I thought about it, however i was wondering if a quicker way to do it was possible. Because i need it for lot of streamline.
But even if i use CFD post session, it doesn't match to obtain the X,Y,Z end of my streamline (except by exporting but it's not the best thing for a lot of cases).
Do you know if in the same way a the polyline with boundary intersection, it is possible to determine the intersection between a streamline and a plane ?

Thank you

ghorrocks · May 1, 2013, 19:30

I do not know what you mean. Scripting things like this is simple and quick.

I suspect your best chance would be to generate the streamlines and export them to do the processing elsewhere. I cannot see an easy way of getting the XYZ location of the start of a streamline other than exporting it.

April 30, 2013, 15:03	Min value function	#1
Leackim New Member Mickael Join Date: Apr 2013 Posts: 9 Rep Power: 13	Hi, I am sure my question is obvious, but i didn't manage to find my answer on CFX help or website. I would like to get all the informations about my streamlines (start from a plane equally spaced) for each one : The min pressure value for example, X,Y,Z start and end coordinates and so on. The min function value returns the min of the overall and not each min value. of course i could plot each streamline and return min but it's time consuming. Anyone know how to do it quickly ? Or how to get the min function code in Ansys, because it must calculate all min before returning the smallest one ? I get same difficulties with x,y,z start and end cordinate : no function available match for this problem Thank you

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
channelFoam for a 3D pipe	AlmostSurelyRob	OpenFOAM	3	June 24, 2011 14:06
what does the function min() do???	sven	OpenFOAM	1	November 9, 2009 22:41
Compilation errors in ThirdPartymallochoard	feng_w	OpenFOAM Installation	1	January 25, 2009 07:59
Problem with compile the setParabolicInlet	ivanyao	OpenFOAM Running, Solving & CFD	6	September 5, 2008 21:50
Please help about the VTKFoam	liugx212	OpenFOAM Running, Solving & CFD	0	November 18, 2005 19:27

April 30, 2013, 20:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	This is straight forward: Record a CFD-Post session file of you doing the streamline analysis on one streamline, then edit the session file to do it lots of times on all the points.

May 1, 2013, 09:13		#3
Leackim New Member Mickael Join Date: Apr 2013 Posts: 9 Rep Power: 13	Thanks for your answer. I thought about it, however i was wondering if a quicker way to do it was possible. Because i need it for lot of streamline. But even if i use CFD post session, it doesn't match to obtain the X,Y,Z end of my streamline (except by exporting but it's not the best thing for a lot of cases). Do you know if in the same way a the polyline with boundary intersection, it is possible to determine the intersection between a streamline and a plane ? Thank you

May 1, 2013, 19:30		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	I do not know what you mean. Scripting things like this is simple and quick. I suspect your best chance would be to generate the streamlines and export them to do the processing elsewhere. I cannot see an easy way of getting the XYZ location of the start of a streamline other than exporting it.