How to use "evenly spaced streamlines 2D" in paraView for streamline visualization

ywem · August 29, 2020, 23:11

Dear all
I am tring to visualize the OpenFoam data (velocity, U) by streamlines in paraView. The streamlines with equally space are wanted. But when I use "evenly spaced streamlines 2D" filter on a clip plane parallel to XY plane, it always display "*** does not support planes not aligned with XY" or close the program automatically. Dose anyone have used this filter and have some ideas about doing this?
Thanks in advance.

MarcusAng · March 12, 2024, 10:06

Hi Wenming,

A late response to your post but hopefully this is helpful for someone else. The Evenly Spaced Streamlines 2D filter only works in XY plane so before you use it, you must transform it as such.

Then,
1. Use the calculator filter to create a new array with only Ux and Uy

Code:

U_X*iHat+U_Y*jHat

2. Use the calculator filter to create a new array for the coordinates

Code:

coordsX*iHat+coordsY*jHat

And tick on Coordinate Results
3. Use Evenly Spaced Streamlines 2D filter

Marcus

August 29, 2020, 23:11	How to use "evenly spaced streamlines 2D" in paraView for streamline visualization	#1
ywem Member Wenming Yang Join Date: Jun 2018 Posts: 42 Rep Power: 7	Dear all I am tring to visualize the OpenFoam data (velocity, U) by streamlines in paraView. The streamlines with equally space are wanted. But when I use "evenly spaced streamlines 2D" filter on a clip plane parallel to XY plane, it always display "*** does not support planes not aligned with XY" or close the program automatically. Dose anyone have used this filter and have some ideas about doing this? Thanks in advance.

March 12, 2024, 10:06	How to use "evenly spaced streamlines 2D" in paraView for streamline visualizationRep	#2
MarcusAng New Member Marcus Join Date: Jul 2022 Posts: 8 Rep Power: 3	Hi Wenming, A late response to your post but hopefully this is helpful for someone else. The Evenly Spaced Streamlines 2D filter only works in XY plane so before you use it, you must transform it as such. Then, 1. Use the calculator filter to create a new array with only Ux and Uy Code: U_XiHat+U_YjHat 2. Use the calculator filter to create a new array for the coordinates Code: coordsXiHat+coordsYjHat And tick on Coordinate Results 3. Use Evenly Spaced Streamlines 2D filter Marcus

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