question about solidworks thremal study

hi im doing this youtube tutorial on thermal analysis of a heatsink. and for some reason i get different results from the video.
link to video: https://www.youtube.com/watch?v=99hsy0GAZx0
so after he does run this study u can see hes temp runs from about 34-39 celsios.
no i did the same and i get temp between -158 to -153.
and i dont understand why..
i added pic to show that i use the same values as him.
also i notice that every time i try to do it even using different tutorials . its does the same problem. the temp are always negative.

Answer
 
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6 Answers

Your initial temp is probably set wrong, or the ambient temp. Check that you have set these exactly like the tutorial.

 
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everything is correct... now i restarted solidoworks. did analysis again, and now its showing me different temp then i got last time but far wrong for the tutorial temp.
il add pics of everything for proof.

 
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and how is this even possible. did time based graph on a point as shown in the pic.
the graph starts from -100. and the initial temp is 25 celsios.
can someone answer this?

 
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I see from your pics that you are setting the initial temp to the faces of the heatsink. The tutorial clearly states that you should select the body, not surfaces. I believe this is the reason for the incorrect results.

 
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the temptures are still not like hes...
maybe somthing is wrong with my version of solidworks? is this possible?

 
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although the initial temp works. because when i open the graph that shows temp per time. it now starts from 25 degrees... so thats good

 
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