Violation of particle conservation in a incompressible ideal gas

KsaMe · June 23, 2020, 17:35

Hi everyone,

I'm working in a closed chamber (picture 1) that is filled with a gas. The chamber has inside 2 copper plates at 900°C and I want to simulate in transient mode the fluid inside the chamber, which is considered a incompressible ideal gas. When I did the simulation I realized that the density only drop with time (Pictures 2 and 3), so particle number is decreased. But this is a closed region, no variation of particle number is possible. I think this is related to the "incompressible" feature of the gas and when I changed to "ideal-gas" the solution doesn't converge. If someone could help me to fix the violation of particle conservation I would really appreciate it.

Regards,

KsaMe

KsaMe · July 1, 2020, 19:22

To solve the problem, work with ideal gas for density and as a solving method choose COUPLED.

Regards,

KsaMe

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July 1, 2020, 19:22		#2
KsaMe New Member Join Date: Jun 2020 Posts: 15 Rep Power: 5	To solve the problem, work with ideal gas for density and as a solving method choose COUPLED. Regards, KsaMe