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-   -   absolute and total pressure (http://www.cfd-online.com/Forums/fluent/48298-absolute-total-pressure.html)

novice May 21, 2008 05:31

absolute and total pressure
 
What is the difference in Fluent between absolute pressure and total pressure???

mAx May 21, 2008 07:05

Re: absolute and total pressure
 
absolute pressure = static_pressure + operating_pressure total_pressure = static_pressure + dynamic_pressure dynamic_pressure = 0.5*rho*U**2

red lemon May 26, 2008 18:48

Re: absolute and total pressure
 
absolute/gauge is just a reporting convention (usually relative to atmospheric pressure)

static/total is a key physical variation such that at rest static pressure = total pressure but as fluid momentum increases the two separate and the difference is the dynamic pressure.


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