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how to get pressure on the boundary at a certain point

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Old   July 24, 2018, 06:56
Talking how to get pressure on the boundary at a certain point
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chen qi
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hi, Everyone.
I want to define a velocity boundary condition, the value of the velocity is relative to the pressure at a certain point, such as (x0, y0, z0). The used type of boundary condition is codeFixedValue, but i do not know how to get the value of the pressure. I am very new in C++, Can you hlep me
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Old   August 3, 2018, 11:25
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I'm not sure to understand your problem but if u want to find the pressure in a point (x,y,z), you can use a probe.
(/etc/casDicts/postProcessing/probes)
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Old   August 6, 2018, 06:00
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Quote:
Originally Posted by chenqi View Post
hi, Everyone.
I want to define a velocity boundary condition, the value of the velocity is relative to the pressure at a certain point, such as (x0, y0, z0). The used type of boundary condition is codeFixedValue, but i do not know how to get the value of the pressure. I am very new in C++, Can you hlep me
A reference pressure can be set in the fvSolution Dict.

Code:
    pRefPoint            0;
    pRefValue            0;
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