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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.
Cort Hanson

Analyzing Transients Faster - a Hacker's Guide to Pipe Sectioning

Over the past few months, I've gotten to help Impulse users from around the world with their models. One of the most common problems I run into while helping them is runtime. A good rule of thumb I try to use is that most Impulse models should take less than 10 minutes to run, and none should take more than a half hour to run. Longer runtimes mean ...
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Cort Hanson

New Feature Highlight - Scenario Comparison Tool

With new versions of Fathom, Arrow, and Impulse being released, we've been taking time to highlight some of the new features that have been added in. Recently, we've looked at multi-scenario pump vs. system curves, along with more general overview of our new features. In this blog, we'll look at one of my favorites, the new Scenario Comparison tool...
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Nick Vastine

Getting there is graph the fun! - Multi-Scenario Pump vs. System Curves

Pump vs. system curves provide an intuitive, graphic way to understand how a pump interacts with a piping system. These can be useful during pump sizing, but can also be informative when your pump must function in a variety of operating conditions. Understanding how changes to your pump or system affect your operating point can be invalua...
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Stephanie Villars

Fathom 11 New Features at a Glance

  Recently AFT announced our new release of Fathom 11. With our new release we have been working hard to create a more robust and faster version of Fathom. Along with improved performance we have added several new tools that have been requested by customers. Here is a quick summary of the top 5 new features that you can look forward to in Fath...
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Stephanie Villars

Where to Start with Pump Startups

Any time a rapid transient occurs in a piping system, there is a chance for unexpected surge to impact the system. Though system shutdowns account for many surge events, pump startups can cause water hammer as well. For this blog I am going to cover the basics of setting up pump and valve transients for the startup case in AFT Impulse 7, as well as...
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Ben Keiser

Know Your Pump & System Curves – Part 2A

Many users enjoyed my previous blog, "Know Your Pump & System Curves – Part 1" and greatly anticipated the release of Part 2. I'm going to split Part 2 into two separate blogs: Part 2A Brief discussion on why system curves matterPump & System Curves for multi-branched piping systems§How you can have different system curves for the...
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Scott Lang

Making Sense of xT – Valve Loss in Compressible Flow

Almost every piping system has valves, and an accurate solution requires accurate valve losses. For incompressible systems, this is relatively straightforward. What happens when we introduce the complexities of compressible flow?  

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