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Stephanie Villars

What is the ANS Module Asking For? Introduction to the Sizing window in the ANS Add-on Module

Many of you are aware that AFT released the ANS module for AFT Fathom and AFT Arrow last year to help engineers minimize the cost of their system and maximize reliability. You can check out this blog I wrote last year for a quick recap on the capabilities of ANS. Let's talk a bit more about what information you need to use the ANS module by introdu...
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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 t...
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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 Fat...
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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 a...
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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 matter Pump & System Curves for multi-branched piping systems §How you can have different system curves fo...
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