Impose a pressure drop on internal flow

achille. · February 27, 2024, 09:22

Hi everyone,

I would like to simulate an operating cylinder head flow bench but I struggle with my boundary conditions.
It is an internal flow going through: 1) a horn 2) intake pipe 3) intake valve 4) combustion chamber 5) plenum
I wonder how to set my boundary conditions to force a certain pressure drop, in order to observe the velocity field.
I already tried to set a stagnation inlet and a pressure outlet to control pressure at both boundaries, but it doesn't work...

Thanks by advance !

JBeilke · February 27, 2024, 14:24

What exactly does not work?

Maddin · February 29, 2024, 16:06

Initial pressure and/or ramp up the pressure drop.

February 27, 2024, 09:22	Impose a pressure drop on internal flow	#1
achille. New Member Achille Schmitter Join Date: Nov 2023 Posts: 1 Rep Power: 0	Hi everyone, I would like to simulate an operating cylinder head flow bench but I struggle with my boundary conditions. It is an internal flow going through: 1) a horn 2) intake pipe 3) intake valve 4) combustion chamber 5) plenum I wonder how to set my boundary conditions to force a certain pressure drop, in order to observe the velocity field. I already tried to set a stagnation inlet and a pressure outlet to control pressure at both boundaries, but it doesn't work... Thanks by advance !

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February 27, 2024, 14:24		#2
JBeilke Senior Member Joern Beilke Join Date: Mar 2009 Location: Dresden Posts: 511 Rep Power: 20	What exactly does not work?

February 29, 2024, 16:06		#3
Maddin Senior Member Join Date: Mar 2009 Posts: 260 Rep Power: 18	Initial pressure and/or ramp up the pressure drop.