## Simulation CFD

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# Calculate Circumferential Velocity and show result on a plane

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Hey community,

I'm new here and hope you can help me. I've got a tube flow with flow direction to the x-axis. Because of swirl I also want to calculate the resulting circumferential velocity. At the "results" I can see the velocity in y-direction and in z-direction on a plane. I just want to calculate the resulting circumferential velocity. Is this somehow possible?

Thank you in adavance.

Regards

MR

# Re: Calculate Circumferential Velocity and show result on a plane

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How about finding the individual Y and Z velocities and take the vector addition of the two?

OJ

# Re: Calculate Circumferential Velocity and show result on a plane

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Thank you for your response. Can you explain me how can I calculate the addition of two vectors?

Regards

MR

# Re: Calculate Circumferential Velocity and show result on a plane

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I hope by circumferential, you meant tangential (ie in YZ plane). If you want to calculoate the velocity at any point, just use the normal vector addition rules and find the angle. But if you want to see the contours of the tangential velocities, then you need to define a custom variable and I think SimCFD does not allow it.

OJ

# Re: Calculate Circumferential Velocity and show result on a plane

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