Fluid flow with inlet mass flow-outflow

manupanand · December 8, 2022, 17:41

I am having a flow consider a pipe flow, in which 9 bar gas is flowing, I don't know the outlet condition. I have simulated with by simulating by making 2D axisymmetric geometry as shown in figure? How to specify both pressure and mass flow at the inlet. I have specified the pressure of the fluid by specifying constant density. Because I don't know the outflow parameters I specified it as out flow at the outlet. How can I specify both pressure and mass flow?

LoGaL · December 8, 2022, 18:27

You can't specify both mass flow and pressure in one place. It is not physical.

In your case I would specify mass flow at the outlet and pressure at the inlet.

manupanand · December 9, 2022, 02:33

thank you your input was valuable, I was also thinking like that.

December 8, 2022, 18:27		#2
LoGaL Senior Member Lorenzo Galieti Join Date: Mar 2018 Posts: 374 Rep Power: 12	You can't specify both mass flow and pressure in one place. It is not physical. In your case I would specify mass flow at the outlet and pressure at the inlet. manupanand likes this.

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December 9, 2022, 02:33		#3
manupanand Member MANU P ANAND Join Date: Jul 2014 Location: Daegu , REPUBLIC OF KOREA Posts: 36 Rep Power: 11	thank you your input was valuable, I was also thinking like that.