[YannGuyot]

Dear all,


I would like to know if somebody could give me information for my problem.
I am trying to solve natural ventilation flow in a room with a heater (schematic representation in attachment), but I was not able to properly define inlet and outlet boundary conditions for velocity and pressure.
I am using buoyantSimpleFoam solver.
I search on the forum but I was not able to find a clear explanation.

Does someone already simulate such behavior and know what BC to apply and where for pressure (prghTotalPressure, fixed value, fixedFluxPressure...) and velocity (zeroGradient, pressureInletOutletVelocity, ...) ?
Thank you very much in advance
Yann

[FMDenaro]

Originally Posted by YannGuyot

Dear all,


I would like to know if somebody could give me information for my problem.
I am trying to solve natural ventilation flow in a room with a heater (schematic representation in attachment), but I was not able to properly define inlet and outlet boundary conditions for velocity and pressure.
I am using buoyantSimpleFoam solver.
I search on the forum but I was not able to find a clear explanation.

Does someone already simulate such behavior and know what BC to apply and where for pressure (prghTotalPressure, fixed value, fixedFluxPressure...) and velocity (zeroGradient, pressureInletOutletVelocity, ...) ?
Thank you very much in advance
Yann

Does the sketch show the vertical direction where gravity acts? What physical infos do you know that the upper section is an outlet and the right one is inlet?

[YannGuyot]

sorry for the miss understanding, i forgot to say that the outlet is higher than the inlet, so outlet should behave as a chimney (i updated the scheme with the z axis)