how to model natural convection in a room

Bionico · September 5, 2012, 08:50

Hi everybody,
I am modelling a room with a heat source: what about the property of the air? Should I use IDEAL GAS LAW (Incompressible) or piecewise linear (or polinomial)?

sinvastil · June 6, 2014, 07:25

Hi everyone,

I am doing a similar study, the difference is that i have one door between the interior and the exterior of room.
In my case the temperatura inside the room is about 278,15K and outside the room is 298,15K.
I want to study the temperature change inside the room, as the door opens, due to the natural convection.
For the exterior i choosed the boundary conditions as Pressure Outlet and to the room were adiabatic walls.
But until now i can't obtain results, can somebody help me?

September 5, 2012, 08:50		#21
Bionico Senior Member Flavio Join Date: Sep 2011 Location: Brescia, Italy Posts: 181 Rep Power: 15	Hi everybody, I am modelling a room with a heat source: what about the property of the air? Should I use IDEAL GAS LAW (Incompressible) or piecewise linear (or polinomial)? __________________ Bionico

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June 6, 2014, 07:25		#22
sinvastil New Member Rui Carneiro Join Date: Mar 2014 Posts: 9 Rep Power: 12	Hi everyone, I am doing a similar study, the difference is that i have one door between the interior and the exterior of room. In my case the temperatura inside the room is about 278,15K and outside the room is 298,15K. I want to study the temperature change inside the room, as the door opens, due to the natural convection. For the exterior i choosed the boundary conditions as Pressure Outlet and to the room were adiabatic walls. But until now i can't obtain results, can somebody help me?