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

The Blessing and Curse of Computational Engineering Software

We have all heard it countless times - "Garbage in, garbage out". As applied to engineering, and specifically to computational engineering software, the admonition is clear - we have to be certain we are properly specifying our engineering input to the software which will compute the behavior we seek to understand. How can we as engineers maximize the productivity that comes from engineering software while minimizing the pitfalls? There is no one correct answer to this timeless question but I will attempt here to convey some insights I have gained. When I started my engineering career almost 30 years ago I...
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Trey Walters

AFT 20th Anniversary Conclusion: Prizes, Awards and the Future of AFT

Last month AFT concluded its 20th year as a world leading provider of fluid flow simulation software products. A year ago I wrote about AFT's 20th anniversary and the prizes we would be awarding. Here is a list of all the lucky winners. Congratulations! AFT has a hard earned reputation for excellence in our products and our technical support. For the next 20 years we plan to build on that reputation.  Here are some things to keep an eye out for from AFT this year: The release of AFT Fathom 9 with a host of new features The release of AFT...
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Trey Walters

Falling Oil Prices...Good or Bad?

Everyone - at least everyone in the USA - is talking about falling oil prices: US consumers are delighted by the lowest gas prices seen for many years - see " Holiday sales buoyed by low gas prices, falling jobless rate ".  Many businesses and those that work in or depend on the oil industry are fearful. Recent discussion of this can be found in BusinessWeek articles " Oil City Prepares for Pain " and " Oil Drillers Are Under Pressure to Scrap Rigs to Cope With Downturn ". Policy makers in the USA face new challenges - see " For...
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Trey Walters

The Power of Global Editing

Global editing is a powerful feature that has existed in all AFT software since version 1.0. The Global Editing windows for pipes and junctions allow engineers to input or modify data for all or a select group of pipes and junctions in a model. This saves countless time when there are many modeling changes that need to be made.  Rather than making changes one by one, changes can be made once and applied to an unlimited number of pipes or junctions. The global editing feature works the same on AFT Fathom , AFT Arrow , AFT Impulse , AFT Mercury and...
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Trey Walters

The Drones Are Coming! The Drones Are Coming!

News on the development of drones (also known as Unmanned Aerial Vehicles or UAVs - or UUVs if underwater) is on the rise. The applications for UAV technology to support engineering activity seem endless. However, as with all new technologies, UAVs can potentially negatively interfere with pre-existing operations, laws and regulations, general accepted practice, as well as common decency. Pipelines - drones are being considered as a replacement for helicopters and other manned aerial vehicles in monitoring pipeline safety and leak detection. See  Drones could be used on North Dakota oil fields . Power and Mining - drones are being considered...
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Trey Walters

When Pipe Flow Modeling Is Not Enough

Within the world of pumping system specialists there is a wide range of areas of domain expertise. I was reminded of this earlier this month while attending the AFT Calgary User Group meeting sponsored by AFT's Canadian channel partner CodeCAD. One of the invited speakers, Jordan Grose of Beta Machinery, used several areas of domain expertise to solve a waterhammer problem in the field. I will discuss more about Mr. Grose's presentation later in this article.

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Trey Walters

AFT Arrow Goes Nuclear - Validated Nuclear Version Now Available

Use of software on nuclear safety systems requires a higher level of validation than normal industrial systems. AFT Arrow has been validated for such use on nuclear safety systems. This means that modeling of steam and other gas systems in safety related work can now be performed with AFT Arrow.

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