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Unread 10-29-2002, 10:18 AM   #49
Les
Cooling Savant
 
Join Date: Oct 2001
Location: Wigan UK
Posts: 929
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Quote:
Originally posted by unregistered
Les
in your garland of many colors there is a assumption which I'm pretty sure is not valid
i.e. that the conductance across the TIM joint is uniform across the face of the IHS

this CANNOT be true
both in the 'unsanded' state as well as the 'sanded' one
- due to the IHS's flexibility and lack of support away from the CPU area, and away from the IHS's edges
- and note also that once sanded there is a thickness variation to deal with as well

this could all be modeled I guess, but not by me Thanks
Yes it is the "Uniform Flux" case.
However to illustrate that the spreading should not be automatically completely ignored the graphs may serve.
Waterloo do both "Parabolic" and "Equivalent Isothermal" for circular heat sources sources but not "rectangles with end cooling". I have no intention of pursuing.
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