Implementation of coupled boundary condition for UDS in Fluent

mpieber · March 9, 2020, 09:50

Dear forum members,

I am currently simulating a transient fluid-solid problem where a UDS transport equation needs to be solved in both fluid and solid zones. Fluent offers the boundary condition option "Coupled" for the boundary between fluid and solid zones.

Does anyone know how this coupled boundary condition for UDS is implemented in Fluent, i.e. which equation(s) is (are) applied?

Many thanks in advance!

Best regards,
Markus

LuckyTran · March 9, 2020, 12:01

There are no explicit equations for a coupled condition. You solve the transport equation in each zone and match the fluxes on the boundary.

March 9, 2020, 09:50	Implementation of coupled boundary condition for UDS in Fluent	#1
mpieber New Member Markus Pieber Join Date: Jul 2015 Posts: 9 Rep Power: 10	Dear forum members, I am currently simulating a transient fluid-solid problem where a UDS transport equation needs to be solved in both fluid and solid zones. Fluent offers the boundary condition option "Coupled" for the boundary between fluid and solid zones. Does anyone know how this coupled boundary condition for UDS is implemented in Fluent, i.e. which equation(s) is (are) applied? Many thanks in advance! Best regards, Markus

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March 9, 2020, 12:01		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,683 Rep Power: 66	There are no explicit equations for a coupled condition. You solve the transport equation in each zone and match the fluxes on the boundary.