Heat transfer with turbulent flow

ketanganatra0@yahoo.com · August 23, 2017, 05:46

Hello,
I was trying to solve a simple problem of 2D channel for heat transfer conditions
1. Uniform wall temperature
2. Uniform heat flux
I have selected buoyantBoussinesqSimpleFoam as solver.
Problem is the buoyant pressure increases tremendously and the outlet is not taken by the system as outflowand that is why the solution is not possible.
However the same boundary conditions with pressure and velocity etc. I have run previously but only with turbulence model.

Please suggest me appropriate modification or suggestons

karlli · August 28, 2017, 10:21

Dear Ketan,
Please have a look at this thread. It is impossible to give suggestions based on your current description.

How to give enough info to get help

ketanganatra0@yahoo.com · August 30, 2017, 05:58

Thanks for your reply,

I have resolved Temperature boundaryconditions.
Please have a look with attaached zip file.
I am using externalwalheatfluxtemperature as boundary condition and for that I have used kappa method as fluidthermo but the error message is shown in kappa error image.

It is asking for thermopackage but which model we have to chose???
kappa is thermal conductivity or else???http://https://drive.google.com/driv...095RUlEbXpMU28

Please reply as soon as possible.

August 23, 2017, 05:46	Heat transfer with turbulent flow	#1
ketanganatra0@yahoo.com New Member Ketan Ganatra Join Date: Aug 2017 Posts: 13 Rep Power: 9	Hello, I was trying to solve a simple problem of 2D channel for heat transfer conditions 1. Uniform wall temperature 2. Uniform heat flux I have selected buoyantBoussinesqSimpleFoam as solver. Problem is the buoyant pressure increases tremendously and the outlet is not taken by the system as outflowand that is why the solution is not possible. However the same boundary conditions with pressure and velocity etc. I have run previously but only with turbulence model. Please suggest me appropriate modification or suggestons

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August 28, 2017, 10:21		#2
karlli New Member Karl Lindqvist Join Date: Jul 2012 Posts: 21 Rep Power: 14	Dear Ketan, Please have a look at this thread. It is impossible to give suggestions based on your current description. How to give enough info to get help

August 30, 2017, 05:58		#3
ketanganatra0@yahoo.com New Member Ketan Ganatra Join Date: Aug 2017 Posts: 13 Rep Power: 9	Thanks for your reply, I have resolved Temperature boundaryconditions. Please have a look with attaached zip file. I am using externalwalheatfluxtemperature as boundary condition and for that I have used kappa method as fluidthermo but the error message is shown in kappa error image. It is asking for thermopackage but which model we have to chose??? kappa is thermal conductivity or else???http://https://drive.google.com/driv...095RUlEbXpMU28 Please reply as soon as possible.