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AFT Blog

Welcome to the Applied Flow Technology Blog where you will find the latest news and training on how to use AFT Fathom, AFT Arrow, AFT IMpulse, AFT xStream and other AFT software products.
Trey Walters

Why Does Pipe Flow Hydraulics Need an Institute?

It is not the name I would have chosen. And originally it was called the Hydraulic Society when founded a little over a century ago in 1917. In 1933 it was renamed the Hydraulic Institute (also known as just "HI"). And today HI is "the global authority on pumps and pumping systems". Originally, and for many decades, one had to be a North American p...
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Trey Walters

I Got My Professional Engineer (P.E.) License – OK, Why?

Engineering is a strange profession in many ways. One area of strangeness is what we can legally call ourselves. Or not. In medicine, law, or accounting, you cannot practice the profession without a license. And that typically involves passing an exam. It may be difficult to accomplish, but the process is straightforward. In engineering things are ...
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Trey Walters

Gas and Steam Transient Analysis is Freaking Hard!

Whew! That was a lot of hard work! As of Monday, April 12, 2021, AFT xStream™ is loaded up and ready to go. And to help you simulate things you have only guessed at before. When we engaged Fred Moody a few years ago to teach a short course at AFT that covered compressible gas and steam transients, we were not certain a commercial quality product co...
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Trey Walters

Will Hydrogen Be Our Future?

All of a sudden it seems that everyone is talking about hydrogen - that wonderful, light-weight gas or liquid (see the Apollo mission Saturn rocket and Space Shuttle) which has the unfortunate tendency to explode (see Hindenburg). In my first engineering job, I was fortunate to work with both gaseous hydrogen as well as cryogenic liquid hydrogen. A...
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Trey Walters

Nuclear Power to the Rescue!

When I was in high school (four decades ago!) I had an awesome physics teacher in my junior year, Mr. Kindred. His class was a key influence in my decision to pursue a career in mechanical engineering. I recall Mr. Kindred discussing the future of fusion power and commenting, as was common at that time, that "fusion power is 20 years away". Well, h...
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Trey Walters

Cloudy With a Chance of Herd Immunity

COVID-19 has impacted us all in some way or another. This has forced most all of us to change how we do things – including our jobs. More than ever before, we have needed the Cloud. Despite my best efforts to avoid it, I caught the COVID-19 virus in late November. I was working from home at the time, as were most of the AFT staff. The Cloud enabled...
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Trey Walters

Digital Twin – Identical or Fraternal?

When I was a child, I was jealous of twins. I thought how cool it would be to have a twin. I had twin cousins a few years older than I was that I saw on a frequent basis. I always got them confused. Which one was Roger, and which one was Ronny? A buzzword floating around recently is "digital twin". Sounds cool. What is it? According to a webinar by...
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