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refrence values to nondimensionalize incompressible flow results

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Old   February 26, 2016, 01:58
Post refrence values to nondimensionalize incompressible flow results
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chandan
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hi,
I am new to cfd...

I was running testcase incomp_euler NACA0012
I am getting conservative_1, conservative_2 ........ pressure zero at freestrem

can anyone please help, how to convert this to actual velocity and pressure distribution...
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Old   February 26, 2016, 06:19
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Tim Albring
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Hi Chandan,

for the incompressible solver the conservative variables are pressure, velocity_x, velocity_y, velocity_z. The pressure is always non-dimensionalized using the dynamic free-stream pressure and measures deviations from the free-stream pressure.

That is, the non-dimensional pressure p is defined as

p = (p* - p*_inf)/(rho_inf*u_inf^2)

where the * indicates dimensional values and inf values at the free-stream. And since p* = p*_inf at the free-stream boundary, the pressure p is zero there.
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Old   February 29, 2016, 22:07
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chandan
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thanks tim for your kind reply, it solved my problem....
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