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July 15, 2020, 18:18 |
Boundary condition in a closed domain
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Member
WALI HASAN
Join Date: Sep 2013
Posts: 42
Rep Power: 12 |
Dear all,
I want to do thermal comfort modeling in a closed big hall. The following are the properties of my system a) Heat loads from wall, skylight, occupant b) 28 supply grills c) 60 extract grills d) from ventilation drawings I have velocities of each supply and extract grill I am confused about what boundary conditions should I use like I can define the mass flow inlet because I know the temp of supply air but I can't define the mass flow outlet because I don't know the temp at the outlet which will change due to heat loads within the domain and my solution is not converging when I use mass flow inlet and velocity inlet at extract with a negative sign. Can you please help what proper boundary conditions should I use at the inlet and extract grills for good convergence. Thanks Wali |
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