pressureInletOutletVelocity boundary conditions

skabilan · March 21, 2009, 19:51

Hi All,

Can someone explain what the "pressureInletOutletVelocity" boundary condition really does? The simualtion is driven by a pressure. The outlet is prescribed a zero pressure and the inlet is prescribed a sine wave which goes both positive and negative.

The manual says:

The inletOulet switches U and p between fixedValue and zeroGradient depending on direction of U

The pressureInletVelocity determines the velocity based on flux when p is known.

The confusion is during the negative portion of the sinewave what does the inletOutlet do?

Thanks in advance
Senthil

giack · April 11, 2013, 11:32

Hi
You know how velocity is obtained from pressure in pressureInletOutletVelocity?

thank a lot

March 21, 2009, 19:51	pressureInletOutletVelocity boundary conditions	#1
skabilan Senior Member Senthil Kabilan Join Date: Mar 2009 Posts: 113 Rep Power: 17	Hi All, Can someone explain what the "pressureInletOutletVelocity" boundary condition really does? The simualtion is driven by a pressure. The outlet is prescribed a zero pressure and the inlet is prescribed a sine wave which goes both positive and negative. The manual says: The inletOulet switches U and p between fixedValue and zeroGradient depending on direction of U The pressureInletVelocity determines the velocity based on flux when p is known. The confusion is during the negative portion of the sinewave what does the inletOutlet do? Thanks in advance Senthil mm.abdollahzadeh likes this.

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April 11, 2013, 11:32		#2
giack Member Join Date: Mar 2013 Posts: 98 Rep Power: 13	Hi You know how velocity is obtained from pressure in pressureInletOutletVelocity? thank a lot