Fluid-Solid Interface for CHT simulation

Phili · September 17, 2014, 10:32

Hey everyone,

for my ongoing university project I've come across some problems regarding a CHT simulation.
I'm trying to simulate heat transfer from the exhaust gas to the exhaust manifold using a test-bench setup in CFX.
Since I am doing the simulation for a "prototyped" exhaust manifold I can only use the mesh files I received from the university - I've no access to any geometry files.
My problem is that on the test bench, inlet and exhaust manifold are connected with a flange, that I am not able to remodel.
I wanted to model a fluid solid interface between the fluid zone and the exhaust manifold walls. However, since the flange is missing in my model, the fluid zone would have a part with no assigned solid zone around (I hope you get what I mean).
Would this still work or would the simulation fail?

Thanks in advance!

evcelica · September 17, 2014, 12:50

It should work fine. That would be a non-overlap area, and it would treat it as an adiabatic surface be default, but you can change the settings.

September 17, 2014, 10:32	Fluid-Solid Interface for CHT simulation	#1
Phili New Member Join Date: Mar 2014 Posts: 17 Rep Power: 12	Hey everyone, for my ongoing university project I've come across some problems regarding a CHT simulation. I'm trying to simulate heat transfer from the exhaust gas to the exhaust manifold using a test-bench setup in CFX. Since I am doing the simulation for a "prototyped" exhaust manifold I can only use the mesh files I received from the university - I've no access to any geometry files. My problem is that on the test bench, inlet and exhaust manifold are connected with a flange, that I am not able to remodel. I wanted to model a fluid solid interface between the fluid zone and the exhaust manifold walls. However, since the flange is missing in my model, the fluid zone would have a part with no assigned solid zone around (I hope you get what I mean). Would this still work or would the simulation fail? Thanks in advance!

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September 17, 2014, 12:50		#2
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,167 Rep Power: 23	It should work fine. That would be a non-overlap area, and it would treat it as an adiabatic surface be default, but you can change the settings.