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

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Old   December 24, 2012, 07:33
Default is there any difference between 2d and 3d in heat flux ?
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ahmad
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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
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Old   December 26, 2012, 01:30
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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).
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Old   December 28, 2012, 12:41
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Quote:
Originally Posted by malay View Post
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.

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Originally Posted by A7A View Post
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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