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Pressure coefficient

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Old   October 31, 2017, 08:56
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Lisandro Maders
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Quote:
Originally Posted by n.phililipova View Post
Dear FLUENT Users,
I have to calculate pressure loss coefficient for tee junction by using FLUENT. How I can devide total pressure to dynamic pressure?
Is there anyone who can help me?
I am grateful for that help in advance!
Hi Nina Philipova,

I think you can make such calculation in the post-processing at CFD-Post, for instance. I believe you can do it as well on Fluent's post-processing tools as well. In CFD-Post, you create a new field and say it is total pressure "p" divided by the dynamic pressure (Fluent has already a variable for this or you can explicitly write the equation based on velocity).


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Lisandro Maders
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Old   December 17, 2019, 10:29
Default calculation for Cp
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Hi, I am learning to simulate 3D flow. I have used Fluent for 3D case and flow around a cylinder. Reference values for area and pressure are 4 and 0. Now I want to plot Cp in CFD-Post. I have created polylines on surface of cylinder. But I want to know what is p in my case for Cp=(p-Pref)/(0.5.rho.U^{2})? and what is U? Is U is freestream velocity? How can I plot in cfd post? Thanks in advance!
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