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February 07, 2020

Brent Cullimore

Tiny Bubbles was a hit song by Don Ho (before even my time). Tiny Density Gradients just won’t make the charts.

But that’s what happens when you take a pure fluid substance to high enough pressure or temperature: the distinction between...

August 06, 2019

Brent Cullimore

You will of course remember this blog post from almost three years ago, “Why Stratified Tanks Stir Me Up.” I mean, who wouldn’t remember a complaint-ridden,...

December 23, 2018

Brent Cullimore

First, let’s be clear: I’m not addressing political dysfunction. If that was your first reaction upon seeing this title, then compromising itself has come to have a negative connotation.

I know it sounds better in engineering to call a...

August 14, 2018

Mark Schmidt

It began with a simple question: How difficult is it to make the <redacted name of a famous fictional armored vehicle made a long time ago in a studio far far away> walk correctly with...

June 25, 2018

Brent Cullimore

Thanks to fun headlines like “Geysers erupt because they’re all bendy inside,” this paper caught my...

May 21, 2018

This is the third post of a three-part blog on two-phase heat transport devices. It was supposed to be the final part, but if I get an inkling (and don’t retire first) perhaps I will continue with oscillating pipes or vapor chambers. If I do retire, it has been nice getting to know all of you...

March 11, 2018

Brent Cullimore

To say that Pythagoras, who lived over 2500 years ago, would be astounded by what I just did in his honor says nothing. I mean, let’s face it: he’d be astounded by kale chips, boomerangs, and tubas.

So I didn’t do it for him. I didn’t do it for...

November 03, 2017

Brent Cullimore

More than once, I got into an argument with a boss in the 80s. And I almost never had a boss who was a thermal engineer during that decade. They never knew what to do with us thermal people. Systems? Power? Materials? Propulsion? Avionics? Been...

October 03, 2017

Brent Cullimore

I don’t mean “blood and guts” metaphorically. But I don’t mean it literally either. Best to call it analytic “blood and guts.” Plus, we’ll skip the guts for now, so you can relax.

And as you’ll see, I could have called this post “City...

June 30, 2017
Heat Pipes: aka Magic Pipes

Jane Baumann

In my previous blog on thermosiphons, I introduced a multipart blog on two-phase heat transport devices. With this blog, I would like to introduce you to heat pipes (sometimes written...

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Vapor Compression Cycles

Tuesday March 10th, 2pm MST

This webinar explains how the toolbox approach of Thermal Desktop and FloCAD can be used to design and simulate vapor compression cycles at various levels of detail. Applications include heat pumps, automotive climate control, and refrigeration systems.

Click here to register

Working Fluid Mixtures

Thursday March 12th, 2pm MST

Working fluid mixtures can be as simple as air and water. Or as complex as ... well, air and water.

"Air" might be a simple perfect gas or a collection of real gases ... itself a mixture. "Water" might be a simple nonvolatile approximation of liquid water, or it might be a volatile liquid.

This webinar discusses mixture types, and repercussions such as pressure and temperature range limits. It illustrates both how to set initial conditions and how to determine what is going on in results.

Click here to register