Dynamic solutions for a fluid world™

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.   More
Trey Walters

Seventy-Five Years After Pearl Harbor, Which Was 38 Years After First Flight at Kitty Hawk

Yesterday was the 75th anniversary of the Japanese attack on Pearl Harbor which catapulted the United States into World War II. For Americans, there was no way to miss the abundant news coverage and the stories of vets who were there that day and are still alive today to share their experiences. As I read about and watched some of the ceremonies and news it got me thinking about the astounding progress humankind made in the 20th century in the field of aviation.

The Wright brothers made their first successful, sustained flight on December 17, 1903 near Kitty Hawk, North Carolina. That in itself was an astounding accomplishment. Their Wright Flyer aircraft today resides in the Smithsonian National Air and Space Museum in Washington, D.C. (see below a photo I took in 2008). I could spend days at that museum and the extended air and space museum in Virginia, but alas I only have had time to spend one day at the main museum in Washington D.C. and have not had an opportunity to visit the one in Virginia.

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Trey Walters

AFT Impulse 20th Anniversary: A Perspective From the Original Impulse Developer

Twenty years ago today I was working desperately on putting the finishing touches on AFT Impulse 1.0. At the time, AFT was a pioneer in every sense of the word. AFT was the first and only company developing visual, drag-and-drop pipe flow modeling software for  Microsoft Windows . And AFT Impulse was set to become the world's first visual waterhammer software for Windows. We already had orders for AFT Impulse before it was complete, such was the demand! The day-to-day demands of getting AFT going as a company was slowing down the completion of AFT Impulse. So I turned over the day-to-day tasks...
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Trey Walters

Inside, Outside, On Top Of and Behind the Incredible Hoover Dam

A little over 30 years ago I made a mistake. At the time I was a busy undergraduate student in mechanical engineering in California. Some students put together an official weekend trip for ME students to the Hoover Dam that included a special tour of the dam geared towards engineers and engineering students. I remember having tons of homework to do and decided not to go on the weekend trip. That was a mistake and I have regretted it ever since.

One outcome of that mistake is that I have rarely, if ever, missed another chance to go on a technical tour. Another outcome is that I have been trying to fit in a Hoover Dam visit ever since. I have been to or through Las Vegas (about 45 minutes from Hoover Dam) probably 30 times since then. But I could never find that half-day I needed to visit the dam with the other priorities I was trying to balance (usually involving my family that included four children). Until a couple of weeks ago.

Another twist for me involves the professor who taught me Statics (the study of stationary structures like dams). I was incredibly fortunate to take a Statics class when I was 19 years old from Howard Eberhart. He was an outstanding teacher and memorable character. Professor Eberhart towered over most of us students at 6' 4" (1.93 m) in height. I will never forget his steely blue eyes, bald head, and deep, gravelly voice proclaiming (for the hundredth time), "It is all...simple...statics!". 

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Trey Walters

(Almost) Live Report From the HUUUUGE MINExpo in Las Vegas

This week I was in Las Vegas at the 2016 MINExpo . AFT had a booth at the show and I hoped to publish this during the show and call it a "live" report. Alas I did not get it completed and the show ended yesterday. Hence it is "almost" live. Over the years I have had the privilege to teach training classes to mining companies on five continents. AFT has been active in support of the needs of the mining industry since we released the Settling Slurry (SSL) module for AFT Fathom in 2009 and the SSL module for AFT...
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Trey Walters

The Difficult Task of Balancing the Environment and the Economy

Last month my wife and I visited the Smithsonian Museum of Natural History in Washington, D.C. While there we saw an inspiring IMAX movie on the American National Parks . I have visited many of these parks and, living in the beautiful American state of Colorado, I have a great appreciation for the importance of preserving natural beauty and the environment. This month the American National Park Service celebrates it's 100th anniversary. Modern society has many benefits which we all recognize and embrace. The global economy and all of our national economies together create jobs of course. But modern society has a...
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Trey Walters

A 30,000 Foot View of the BREXIT Trend: Should We Stay or Should We Go - or Should We Even Care?

I am writing this from over 30,000 feet (actually 35,001 feet/10,667 meters according to my video map) over the Atlantic Ocean and on my way to Europe. The recent vote of the UK citizenry to leave the European Union (EU) is a hot topic at the moment (what everyone has been calling BREXIT). And I just finished reading yet another article on BREXIT. So I decided to digest some of what I have gathered in an article and here it is.

Taking the title of my article at face value “Should We Stay or Should We Go - or Should We Even Care?”, the answer is definitely “it depends”. It depends a lot on who you mean by “we”. And probably everyone should care because BREXIT lends weight to many of the separatist movements around the world. Whether it is Scotland and the UK, Quebec and Canada, Greece and the EU (also known as GREXIT), or Catalonia and Spain, or elsewhere, separation is in the air. And that causes uncertainty and disruption which affects all of us at some level.

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Trey Walters

Predicting the Future? Oil, Politics, the Economy and Engineering

My career has been spent applying engineering principles to predict the future - specifically how actual or planned physical systems will respond in the future. Such predictions of course allow engineers to make decisions on safety, energy, environmental impact, and cost. Physical systems follow the laws of physics. Compared to other areas of human endeavor like oil, politics, and the economy, engineering is easy. 

On a flight to California a couple days ago I read a variety of articles discussing oil, politics and the economy - as well as engineering and technology. Everyone wants to know about the future. I want to know about the future. Lots of people are trying to predict the future.

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