Power placement question on a cube
 

Hi,

In FloTHERM XT, I made a 10 x 10 x 10 mm solid cube to go through a simple thermal simulation with convection and conduction only. I applied a thermal attribute of 2W for the cube and tried to place it right at the center of the overall domain. When I meshed and ran the simulation, I get a temperature range of 147 - 152degC on the cube. From that, it tells me floTHERM selects a point on the cube to apply the 2W instead of having the whole cube emit the 2W. The question is how does it determine which spot on the cube to apply the 2W, and is it possible for me to control that?

Hi.
The power of 2W is applied onto the entire volume of the cube. The temperature gradient on its surface is normal in natural convection cases. To apply power on a smaller volume (for example a 2mm cube) inside your 10mm cube you just need to make another cuboid, overlap it with the original one and attach power to this smaller cuboid.
One more thing: power can be attached to volumes or to surfaces.
BR, Gabriel

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