velocity vector in CFX post

zryan civil · August 19, 2016, 14:52

in free surface flow I want to sketch velocity vector . but it sketches both air and water velocity vector, how can I draw only water velocity vector.

ghorrocks · August 20, 2016, 07:05

Create a variable in CFD-Post of velocity*volume fraction. Then the velocity will be zero in the air section.

Or you can put a contour on the free surface and generate a user surface from it. Then plot velocity on the user surface and it will only be the water bit.

There are probably other ways to do it if you have some imagination.

August 19, 2016, 14:52	velocity vector in CFX post	#1
zryan civil Member Join Date: May 2016 Posts: 40 Rep Power: 10	in free surface flow I want to sketch velocity vector . but it sketches both air and water velocity vector, how can I draw only water velocity vector.

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August 20, 2016, 07:05		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,819 Rep Power: 144	Create a variable in CFD-Post of velocity*volume fraction. Then the velocity will be zero in the air section. Or you can put a contour on the free surface and generate a user surface from it. Then plot velocity on the user surface and it will only be the water bit. There are probably other ways to do it if you have some imagination.