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Forum: CFX

July 30, 2012, 20:27

Replies: 14

Solving natural convection

Views: 3,279

Posted By Shljuki

14858 Wall heat flux [W] on the surface...

14858

Wall heat flux [W] on the surface with the highest Rayliegh number: transient versus steady state results - 460 seconds.

Forum: CFX

July 20, 2012, 01:06

Replies: 14

Solving natural convection

Views: 3,279

Posted By Shljuki

Thanks Glenn, Rayleigh number in the worst case...

Thanks Glenn,
Rayleigh number in the worst case scenario is 6.88*10^8. I assume this indicates transition from laminar to turbulence flow. I will run the case with highest Rayliegh number in...

Forum: CFX

July 20, 2012, 01:01

Replies: 14

Solving natural convection

Views: 3,279

Posted By Shljuki

Thanks Ayk, global imbalances are OK. The...

Thanks Ayk,
global imbalances are OK. The highest imbalance of for energy, still less than 1%.
What turbulence model is recommended for natural convection analysis?

Forum: CFX

July 19, 2012, 08:54

Replies: 14

Solving natural convection

Views: 3,279

Posted By Shljuki

Thanks for your reply. The meshing approach,...

Thanks for your reply.
The meshing approach, first cell size and inflation has been documented as a reasonable good approach for natural convection studies. I have done a sensitivity check on a 2D...

Forum: CFX

July 18, 2012, 22:08

Replies: 14

Solving natural convection

Views: 3,279

Posted By Shljuki

Solving natural convection

Hi,
i have a box model (room) with one cooled surface (ceiling) and one heated surface (window) and i am trying to solve the temperature field inside the room. There is no forced air flow and...

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