How do I get the pressure force vector which is normal to the surface?

Sathesj · August 17, 2022, 13:24

Hello,

I am simulating an airflow in the wavy channel. I am trying to find the pressure (from) drag along the wall. As seen from the image attached, I am interested in finding Fp ( pressure force along the wall) Which is normal to the wave surface. Further, I want to decompose this force and get its x-component(Fpx).

I am doing a 3D simulation in Ansys fluent. How do I get this pressure force, which is a normal force vector to the surface? Is there a way to get this directly in the fluent? Can someone help me with this?

Thanks in Advance,
Shubham

HHOS · September 6, 2022, 15:17

Hi

When you make a report of the force you simply have to set, in this case, the vector 1 0 0 and fluent will split the force in viscous and pressure forces.

If you want to make it more complicated, create a Custom Field function of pressure * x-face-area. Then make a report of the surface using the sum of that new variable at the wall that you want.

Regards

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September 6, 2022, 15:17		#2
HHOS Member Join Date: Jul 2013 Posts: 85 Rep Power: 12	Hi When you make a report of the force you simply have to set, in this case, the vector 1 0 0 and fluent will split the force in viscous and pressure forces. If you want to make it more complicated, create a Custom Field function of pressure * x-face-area. Then make a report of the surface using the sum of that new variable at the wall that you want. Regards