extract data

wave maker · April 1, 2015, 07:16

hello, i am making some simulations of wave generation in a tank. i have a problem with the extrapolation of the data from CFD post. I am simulating a wave tank and i want to plot the free surface at some fixed times but i am not able to do that. can you help me?
thanks a lot

ghorrocks · April 1, 2015, 07:54

Yes, we can help you. But you have to explain what the problem is first.

wave maker · April 1, 2015, 08:11

i want to extract the data in CFD post. i want the data of the free surface in a fixed time along the entire domain. how can i compute this?

ghorrocks · April 1, 2015, 08:13

Load up the time step you are interested in.
Define an isosurface of volume fraction = 0.5

Done. Easy.

wave maker · April 1, 2015, 08:34

ok, but how can i extract the data of the position of the isosurface??

ghorrocks · April 1, 2015, 08:37

File/Export.

Then select the isosurface as the object to export.

wave maker · April 1, 2015, 08:41

thanks a lot.

April 1, 2015, 07:16	extract data	#1
wave maker New Member wave maker Join Date: Feb 2015 Posts: 14 Rep Power: 11	hello, i am making some simulations of wave generation in a tank. i have a problem with the extrapolation of the data from CFD post. I am simulating a wave tank and i want to plot the free surface at some fixed times but i am not able to do that. can you help me? thanks a lot

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April 1, 2015, 07:54		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	Yes, we can help you. But you have to explain what the problem is first.

April 1, 2015, 08:11		#3
wave maker New Member wave maker Join Date: Feb 2015 Posts: 14 Rep Power: 11	i want to extract the data in CFD post. i want the data of the free surface in a fixed time along the entire domain. how can i compute this?

April 1, 2015, 08:13		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	Load up the time step you are interested in. Define an isosurface of volume fraction = 0.5 Done. Easy.

April 1, 2015, 08:34		#5
wave maker New Member wave maker Join Date: Feb 2015 Posts: 14 Rep Power: 11	ok, but how can i extract the data of the position of the isosurface??

April 1, 2015, 08:37		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	File/Export. Then select the isosurface as the object to export.

April 1, 2015, 08:41		#7
wave maker New Member wave maker Join Date: Feb 2015 Posts: 14 Rep Power: 11	thanks a lot.