# is there any difference between 2d and 3d in heat flux ?

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 December 24, 2012, 07:33 is there any difference between 2d and 3d in heat flux ? #1 Member   ahmad Join Date: Feb 2012 Posts: 96 Rep Power: 5 is there any difference between 2d and 3d in heat flux ? I mean for example if i have a heat flux= 90 watt per square meter in 3d , what value in 2d i must put in fluent ? thank you

 December 26, 2012, 01:30 #2 Member   AHMAD Join Date: Apr 2012 Posts: 53 Rep Power: 5 When you work with 2d simulation, fluent take a default value of z which is z=1[m], so the area of the heated surface will be computed this way, and the total heat flux will differ depending on the area. But if you were studying problems related to calculating heat transfer coefficient, there shouldn't be any difference(unless there is secondary flows in the z direction).

December 28, 2012, 12:41
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Lucky Tran
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Quote:
 Originally Posted by malay is there any difference between 2d and 3d in heat flux ? I mean for example if i have a heat flux= 90 watt per square meter in 3d , what value in 2d i must put in fluent ? thank you
Use the same heat flux.

Quote:
 Originally Posted by A7A When you work with 2d simulation, fluent take a default value of z which is z=1[m], so the area of the heated surface will be computed this way, and the total heat flux will differ depending on the area.
Heat flux does not depend on area. I think you meant total heat.

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