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Mechanical Analysis Blog

Posts tagged with 'Thermal Design'

13 Aug, 2009

Boris Marovic Hello again, Finally I was able to find some time for the project again. In the first part I showed you the CPU heat sink from Noctua and in this part I’ll show you how I gained the properties that I used for the simplified model of the heat sink. Instead of meshing the narrow space between the 36 metal sheets with a huge amount of cells in addition to the already lots of cells in the whole PC, I will … Read More

Thermal Design, FloEFD, Electronics Cooling, FloEFD Project

3 Aug, 2009

John Parry Thanks to the sterling efforts of Martin Tarr and the UK Electronics Knowledge Transfer Network a free on-line thermal management design guide is now available here. If you scroll down the page you’ll see the following sections: • The need for thermal management • Dealing with the heat • Thermal modeling • The practicalities of cooling • Implementing thermal management Each of these can be expanded … Read More

Thermal Design

8 Jul, 2009

Effusivity Smackdown or Standoff?

Posted by John Wilson

John Wilson One our our engineers attended the short course “Thermal Management from an Industrial Point of View” at SEMI-THERM 25 last March presented by Clemens Lasance and Wendy Luiten.    One of the topics that I found really interesting from the course material was that related to contact temperatures.  More specifically, the contact temperature for two semi-infinite bodies, one of them being you.  After reading … Read More

Thermal Design, Consumer Electronics, Electronics Cooling, Thermal Transient, Contact Temperature, Effusivity

29 Jun, 2009

John Wilson Some time back we were testing a flip-chip package in a top-cold-plate harness to measure the package junction-to-case thermal resistance (ΘJC, RJC).   We performed a number of tests where we were consistently measuring a higher value of thermal resistance than was reported by the vendor.   How could we and the vendor both be correct?!? To understand this further I built an analysis model to study … Read More

Thermal Design, Thermal Testing, Electronics Cooling, Heat Spreading

25 Jun, 2009

Air – Is it Running Out of Gas?

Posted by John Parry

John Parry When I first started working on electronics cooling it was at the end of what people sometimes refer to as the ‘bipolar age’. CMOS had become established, paving the way for PCs with very low power consumption. The cooling challenge was just to get the heat out of the box, making sure there were no major dead spots in the flow that would lead to overheating. Typical problems tended to be quite obvious, … Read More

Thermal Design, Thermal Testing, Electronics Cooling, FloEFD, FloVENT

22 Jun, 2009

Robin Bornoff “A picture paints a thousand words”. Probably not as quickly though. Wouldn’t the world be a different place if we had evolved the ability to communicate via richly contented drawings? Likely we’d have more fingers, smaller ears and would war less due to less frequent commnunication misunderstandings. FloTHERM’s CFD simulation technology creates a wealth of data that reflects what happens in and around … Read More

Thermal Design, Thermal Testing, Electronics Cooling, FloVENT

4 Jun, 2009

Boris Marovic I want to welcome you to my blog and as you can read in what my blog will be about, I’m going to do some projects. These projects will be about some things that I always wanted to do with FloEFD and of course if you have some interesting suggestions it will be also about some of your ideas. If there is a reader out there that is experienced in the field of my project I’ll be happy to hear any helpful … Read More

Thermal Design, FloEFD, Electronics Cooling, FloEFD Project

1 Jun, 2009

Thermal Design Stages-Phase 2

Posted by John Wilson

John Wilson About a week ago I wrote the first part of a four part series on how I believe that Computational Fluid Dynamics (CFD) accelerates thermal design from the “Need” to “Acceptance”, which can be found here.  This second part focuses on the Computer Analysis portion of the process. I’d like to think that I am not remotely experienced enough to know first hand when desktop computers really changed the … Read More

Thermal Design, FloEFD, Electronics Cooling, Delphi, Design of Experiments

21 May, 2009

Thermal Design Stages-Phase 1

Posted by John Wilson

John Wilson Recently I was thinking about how Computational Fluid Dynamics (CFD) accelerates all phases of Thermal Design.  I’m sure it is debatable but here is what I came up with for the phases of Thermal Design .  The arrows could be looped over and back and round and round but I think the flow is reasonable. The basic 4 step design process that leads to the desired Design Approval depicted is: Design … Read More

Electronics Cooling, Thermal Design, CFD, Thermal Testing



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