Modeling heatsink with thermal resistance parameter!

Hi Linh Le

you first need to have a 3D CAD model of all components.

Now you need to do a transient thermal analysis, to know how long it takes your model to reach the desired temperature.

in solidworks simulation for thermal analysis must go on connections right click and contact set and select thermal Resistance.

You should apply the boundary conditions for your model such as temperature, coefiente convection, conduction ....

Thanks

Best Regards.

Waldy J. Torres.

Hi Le,

The results shown in the graph are the heatsink performance with ducted air flow condition.

I would create the heatsink model as shown in the catalog, assemble into the rectangular duct channel (C/S same as heatsink size) and define the inlet air velocity at one end and environmental pressure on other end. You should be able reproduce similar results. I have done similar studies and the CFD prediction is quite satisfactory.

Like Jared mentioned, you can also define heatsink as porus medium, but is time consuming and have too many assumptions. Generally this method is useful when you have large heatsink and needs high mesh quality.

If you can post a picture of your CAD model, it would be helpful to guide you further.