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.

Get the Most Out of AFT's Fluid Property Viewers

Veteran AFT software users are familiar with heritage products like AFT SteamCalc and AFT Chempak Viewer. Some have wondered where these products went. Although licenses to these products are no longer sold, these viewers are now integrated into the main applications for each of AFT's main products: AFT Fathom, AFT Arrow, AFT Impulse, and AFT ...

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What Is Transient Analysis?

 pressure at Valve Inlets Figure 14 - Transient pressure at Valve Inlets for Scenario 2 of the AFT Impulse transient simulation where Valve C closes linearly in five seconds. Note the initial pressure is about 200 psia, about 10 psi higher than Scenario 1.

You're tasked to perform a transient analysis of a piping system and it would be really helpful if there was a good software tool out there to help you.  Well, you've come to the right place because AFT has great solutions!  But our first question is, "What kind of transient analysis are you trying to do?"  You might s...

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Having model convergence problems? Start here!

Trying to run a model and running into convergence errors? Here are a few common tips to help with model convergence for AFT Fathom, AFT Arrow, and the steady state modes for AFT Impulse and AFT xStream. Though these tips will not work for all models, they have helped with many of the steady state convergence cases that have come through the AFT su...

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The Eductor Educator

Eductors, also known as jet pumps, are a clever way to pump a liquid without any rotating equipment, motors, shafts, or electricity using only the momentum from a supply fluid. However, these interesting pumps can quickly become confusing especially when trying to define them in AFT Fathom. In this blog we will explore exactly how eductors work and...

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Line Packing: Recovering the Irrecoverable

Have you ever been working on an interesting project where you get into the zone by picking up so much momentum in the work you are doing? But then, all of a sudden you hit a brick wall in your progress and cannot help but feel the pain of all that momentum coming to a screeching halt? You are not alone, in fact, fluids experience something ve...

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A Story About Fluid Communication

Jack, Ryan, and Sally are piloting a small research vessel on a remote river. While distracted by news of the Mars 2020 Perseverance rover (successful landing!), their vessel crashes and begins capsizing. After their initial panic, they are dismayed to find the collision has taken out their communications equipment.

In some quick thinking, Jack finds a printed log of ships expected to be nearby. Fortunately, there is a marine zoology expedition about a mile downriver, and our crew just needs to get an SOS out to that ship.

Initially, Jack tries simply yelling for help. Unfortunately, this doesn't do much good - and the explanation why requires some fluid mechanics.

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Non-Newtonian Fluids - How to Model the Soap, Silly-Putty, or Shampoo in Your Pipe Network

Non-Newtonian fluids are something almost every elementary school student is familiar with. Mixing cornstarch and water to create a liquid that acts as a solid is an experiment which has captured the attention of children (and adults) for generations. The Discovery Channel show Mythbusters even showed Adam Savage walking across a tub of cornstarch ...

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