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Pressure in x y and z at a point with type probes ?

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Old   July 25, 2022, 06:46
Default Pressure in x y and z at a point with type probes ?
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Hi Foamers,

I am using the type : probes , to get the pressure field at a specific point of the domain (front of a cube).

I use the following code which I include in controlDict :

Code:
Probes
{
		type			probes;
		functionObjectLibs	("libsampling.so");
		
		probeLocations
		(
			(30.77 28.5 5.7)
			(33.59 28.5 5.7)
			(36.39 28.5 5.7)
			(39.15 28.5 5.7)
			(41.99 28.5 5.7)
			(44.77 28.5 5.7)
			(30.77 29.9 5.7)
			(30.77 27.1 5.7)
						
		);
		
		fields
		(
			p p_rgh U
		);
		
		writeControl timeStep;
		writeInterval 1;
		
}
The issue is that I want the total pressure in x,y and z at each point (at each time step), from what I have understood it gives the resultant of the total pressure ?

I would like to have : Probe 0 : (Px Py Pz) at each time step.

For P the file looks like this :

Code:
# Probe 0 (30.77 28.5 5.7)
# Probe 1 (33.59 28.5 5.7)
# Probe 2 (36.39 28.5 5.7)
# Probe 3 (39.15 28.5 5.7)
# Probe 4 (41.99 28.5 5.7)
# Probe 5 (44.77 28.5 5.7)
# Probe 6 (30.77 29.9 5.7)
# Probe 7 (30.77 27.1 5.7)
#       Probe             0             1             2             3             4             5             6             7
#        Time
         0.01       10.7422        9.9048       9.11383       8.19736       7.29158       6.52847        10.741       10.7384
         0.02       1.28521      0.841686      0.624537      0.413598      0.278632      0.158449       1.23397       1.22539
         0.03      0.658324     0.0997469    -0.0174502    -0.0836282     -0.155532     -0.142431      0.598483      0.584415
         0.04      0.750789      0.127352     0.0405554      0.049611    -0.0688022    -0.0475112      0.711535      0.700472
         0.05      0.926458      0.266654      0.165103      0.201805     0.0322193     0.0212896      0.916224      0.907715


How can I do this ?

Thanks!

Last edited by cfd_saad; July 25, 2022 at 10:10.
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Old   July 26, 2022, 05:20
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any ideas ?
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Old   July 26, 2022, 13:53
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I did not test it, but I would try the following:
  1. Use the totalPressureCompressible/totalPressureIncompressible function object to get the total pressure.
  2. Add the name of the total pressure field (should be total(p)) to the fields subdictionary.
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