User Field Function Problem

RobinZ · August 28, 2014, 09:08

Hey Guys,
i have a problem with defining a user field function in star ccm+.
I want to have the value for the highest y position with an volume fraction value of 1, for water. So short i want to observe my water level. I tried to write this:
max($$Position[1]($VolumeFractionWater==1))
But i get an syntax error. I hope you can help me.

kguntur · August 28, 2014, 12:57

I am not sure if this is what you want, but you can try this to get the max y value for volume fraction of water =1
Create a threshold for volume fraction of water >0.9
(use 0.99 if you want to be very precise)
Create a maximum report with the threshold as the part and Position(j) as the function.
This report would give the max y for volume fraction of water >0.9.

Hope this helps.

ping · August 29, 2014, 07:18

that is a good suggestion

another method is to create an isosurface at water volume fraction 0.5 or similar and then do a max report of position on this new derived part

RobinZ · September 3, 2014, 09:22

Thanks a lot! I did it by creating an isosurface. It was very easy.

August 28, 2014, 09:08	User Field Function Problem	#1
RobinZ New Member RobinZ Join Date: Apr 2014 Posts: 19 Rep Power: 12	Hey Guys, i have a problem with defining a user field function in star ccm+. I want to have the value for the highest y position with an volume fraction value of 1, for water. So short i want to observe my water level. I tried to write this: max($$Position[1]($VolumeFractionWater==1)) But i get an syntax error. I hope you can help me.

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August 28, 2014, 12:57		#2
kguntur Member kris Join Date: May 2014 Posts: 73 Rep Power: 12	I am not sure if this is what you want, but you can try this to get the max y value for volume fraction of water =1 Create a threshold for volume fraction of water >0.9 (use 0.99 if you want to be very precise) Create a maximum report with the threshold as the part and Position(j) as the function. This report would give the max y for volume fraction of water >0.9. Hope this helps.

August 29, 2014, 07:18		#3
ping Senior Member Ping Join Date: Mar 2009 Posts: 556 Rep Power: 20	that is a good suggestion another method is to create an isosurface at water volume fraction 0.5 or similar and then do a max report of position on this new derived part

September 3, 2014, 09:22		#4
RobinZ New Member RobinZ Join Date: Apr 2014 Posts: 19 Rep Power: 12	Thanks a lot! I did it by creating an isosurface. It was very easy.