[General] Subtracting 2 surface vectors and plotting the difference contour

anubasu · August 3, 2024, 00:10

Hi all,
I have tried this: subtracting 2 slices but not able to color it by the difference. I have 2 surface vectors and i have used resampled data set to create a new. Now i am applying the calculator to subtract the quantity sqrt(U_Y*U_Y+U_Z*U_Z)_SurfaceVectors1-sqrt(U_Y*U_Y+U_Z*U_Z)_SurfaceVectors2. But this is not happening and causing some issue. Shall i have to do something else?

Thanks!

AtoHM · August 5, 2024, 05:46

It seems you want to get the difference of the in-x-plane velocity magnitude. You cannot collect two value fields with the same variable name in one source. Instead, calculate the in plane velocity magnitude for the one, give it some name, calculate it for the second source, use GroupDataset to bring them together and then you should be able to calculate the difference by velMag1 - velMag2 and plot it.

August 3, 2024, 00:10	Subtracting 2 surface vectors and plotting the difference contour	#1
anubasu Member Anurag Join Date: Feb 2023 Posts: 78 Rep Power: 3	Hi all, I have tried this: subtracting 2 slices but not able to color it by the difference. I have 2 surface vectors and i have used resampled data set to create a new. Now i am applying the calculator to subtract the quantity sqrt(U_YU_Y+U_ZU_Z)_SurfaceVectors1-sqrt(U_YU_Y+U_ZU_Z)_SurfaceVectors2. But this is not happening and causing some issue. Shall i have to do something else? Thanks!

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August 5, 2024, 05:46		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 703 Rep Power: 13	It seems you want to get the difference of the in-x-plane velocity magnitude. You cannot collect two value fields with the same variable name in one source. Instead, calculate the in plane velocity magnitude for the one, give it some name, calculate it for the second source, use GroupDataset to bring them together and then you should be able to calculate the difference by velMag1 - velMag2 and plot it.