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AFT Blog

Welcome to the Applied Flow Technology Blog.
Scott Lang

Not a Leak! Modeling Multi-stage Pumps with Discharge Flow Between Stages

 ​AFT Fathom has long included the ability to model multi-stage pumps by representing them with an overall effective pump curve. New in AFT Fathom 10 is the ability to model "Interstage Bleed" or "Takeoff Flow" in these multi-stage pumps.

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Recent Comments
Guest — Michael Shahrokhani
Dear Scott, If we have not the AFT Fathom 10 version, we can construct the overall pump curve (with take off), by using interstage... Read More
Monday, 01 October 2018 09:47
Scott Lang
Hello Michael, Thank you for your question! This feature in AFT Fathom 10 is primarily a convenient way to calculate the pump cu... Read More
Monday, 15 October 2018 22:48
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  2 Comments
Applied Flow Technology

It’s a Pump Properties Party!

Everyone loves to celebrate. Here at AFT, we are celebrating the release of AFT Fathom 10. One of the great things about AFT Fathom 10 is that the new and improved Pump Properties window makes specifying pumps faster and easier than ever. This blog will provide an overview of the features that have been added or changed within the Pump Propert...
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Recent comment in this post
Guest — Naik
thank you for the wonderful information, it helped me in making the decision. so finally decision narrowed down to Antlia Engineer... Read More
Thursday, 15 November 2018 14:25
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  1 Comment
Ben Keiser

What Does “Head (HGL)” Mean for Submerged Pumps and Exit Pressures?

In AFT Fathom and AFT Impulse, it is possible to model a submerged pump where a short and possibly frictionless suction pipe for the pump’s inlet does not need to be modeled.  When modeling a submerged pump, there are two options available for specifying the system inlet boundary condition at the pump suction.  As shown in Figure 1 below, the Submerged Pump’s Suction Pressure can either be specified as “Head (HGL)” or “Pressure”.   Modeling a submerged pump is not the only time where the “Head (HGL)” or “Pressure” choices will arise.  If an Exit Valve (i.e., a valve that discharges...
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