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AFT President & Founder | ASME Fellow - Trey founded AFT in 1993. He was the original developer of AFT Fathom (including the GSC and XTS modules), AFT Arrow and AFT Impulse. He was active in software development until 2011 and still works with the development team in addition to managing AFT. He has taught hundreds of training classes on AFT’s...

AFT President & Founder | ASME Fellow - Trey founded AFT in 1993. He was the original developer of AFT Fathom (including the GSC and XTS modules), AFT Arrow and AFT Impulse. He was active in software development until 2011 and still works with the development team in addition to managing AFT. He has taught hundreds of training classes on AFT’s software products in twelve countries across every populated continent. He worked previously for General Dynamics in cryogenic rocket design and Babcock & Wilcox in steam/water equipment design. He holds a BSME (1985) and MSME (1986), both from the University of California, Santa Barbara. He is a registered Professional Engineer.  

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Trey Walters

Is there steam on your (Microsoft) Windows? How ASME Steam Tables came to be.

In the modern world there are many things we take for granted – especially in first-world countries. Among them are the reliable availability of water and electricity. To our homes. To our workplaces. Just about everywhere. Engineers also take things for granted. One of those is reliable data on the properties of steam and water. But it was not alw...
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Trey Walters

AFT Impulse: A Quarter Century as a World Leader

A few weeks ago, a major milestone was passed when AFT Impulse experienced it's Silver Jubilee - which is another word for 25th Anniversary. On November 21, 1996, AFT released the world's first visual waterhammer modeling software for Windows. This is significant for a few reasons including a reminder to me that I am getting really old! At the mome...
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Trey Walters

Orbital Reef: A Business Park in Space?

Getting things into orbit around the earth is hard. And expensive. The privatization trend in space technologies has been ongoing for a number of years, and new technologies are reducing costs significantly. A few weeks ago Sierra Space was joined by Blue Origin, Boeing and several other organizations in releasing details of their plan to deliver a...
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Trey Walters

Calling All Waterhammer Experts – We Need You On This New Committee!

As you know, AFT is a developer of a world leading waterhammer simulation tool in AFT Impulse. We regularly get asked for waterhammer guidance by engineers tasked with building piping systems. While there are some excellent waterhammer resources available, there is not much decision-making content from non-commercial authoritative organizations. Th...
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Trey Walters

Eagles: NFL Football Team, National Emblem or Wind Turbine Foe?

Last Friday I saw a bald eagle. Up close. The closest I have ever been to an eagle in the wild. Just off the highway sitting on a fencepost. We also saw a lot of wind turbines. And, yes, wind turbines are the foes of eagles. Which is a sad by-product of wind power technology. More on that later. Tonight the 2021 NFL football season starts. And, yes...
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Trey Walters

The Fluid Mechanics of an African Safari

Last week I got back after three weeks in East Africa – my first international travel since the COVID-19 pandemic started. I had some out-of-the-ordinary encounters with fluid flow. So, I decided this month to depart from my usual tech-centric format and have some fun. Here are some brief topics I will discuss and a few photos I took… Open Channel ...
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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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