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AFT Blog

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Stephanie Villars

Applying the Improved ATKF Method for Laminar and Non-Newtonian Flow

If you have worked with Non-Newtonian fluids or low velocity systems in AFT Fathom or AFT Impulse before, then it is likely that you have worked with the Adjusted Turbulent K Factor (ATKF) method before. The ATKF method can be used to adjust K factor data developed for turbulent flow conditions to better predict loss in the laminar f...
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Scott Lang

And, Not, Or - Starting Transient Events with Complex Logic

AFT Fathom XTS and AFT Impulse have long been able to start events like pump trips or valve closures when a certain condition is met in the system. For example, a valve can close when a tank is full, or a pump can trip when the flow is too low. However, complex systems often have multiple conditions that can cause an event. The pump may trip when the flow is too low OR the suction pressure is too low. The valve may only close when ​two​ tanks are full. AFT Fathom version 10 and AFT Impulse version 7 enhance the transient capabilities to allow the definition of these complex ​Multi-Condition Events​.

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Stephanie Villars

Raise the bar using Vacuum Breaker Valves

Vacuum breaker and air valves are useful tools in the industry for protecting pipelines against vacuum or near vacuum conditions. High points in the pipe can be susceptible to these low-pressure conditions during surge events, as pressure waves moving through the system cause a sudden pressure upsurge or downsurge. AFT Impulse can help engineers to...
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Stephanie Villars

Visualize Your Goals

AFT Impulse 7 has several different tools to analyze waterhammer, including several new features such as Visual Report Animation. This tool offers a new method to understand how different sections in a network interact with each other allowing users to quickly locate points of interest for further analysis, and visually demonstrate the system ...
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Stephanie Villars

Meet the Import Piping Layout Wizard

When completing the analysis on a model, there is nothing more frustrating than having to do the same thing over and over again. Thankfully, using AFT's Piping Layout Wizard you will no longer need to rebuild your CAD, CAESAR II , and EPANET files to analyze the hydraulics using AFT Fathom 10 , AFT Arrow 7 , and AFT Impulse 7 . In addition to ...
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Stephanie Villars

"Water" you waiting for? Checkout these water system features!

 Seeing as this month is water month, we thought this would be a perfect time to highlight some of the great ways that AFT Fathom 10 can help with hydraulic analysis for water distribution, wastewater, and fire water systems. From building the model to exporting and presenting results, we offer several helpful features. We have heard our users...
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Trey Walters

Did you know that New Jersey is a barrier in Spain?

It is true. New Jersey is a barrier in Spain. I saw it with my own eyes. Bear with me and I will explain.

When I travel internationally I find the people, cultural and language differences fascinating. Last month I was fascinated once again. My blog last month was written while on an airplane as I travelled to Europe (see my July blog When Pipe Stress Analysis Meets Waterhammer Hydraulics: New Waterhammer Guidelines for Engineers). Before going to the ASME PVP conference in Prague (check out this video one of our staff made) I stopped in Spain for 4 days. While there I was fortunate to visit the location of an AFT Impulse project by one of our customers that was a Platinum Pipe Award Winner this year. This case study was published in April. See AFT Impulse™ Matches Data For Pumping Station Check Valve Closure. That pump station photo in the case study is where I visited. Below is a photo of me and the PPA winner David Lozano Solé of AQUATEC – SUEZ Group. For those interested, this project is being presented as a technical paper by David at the 2018 Pressure Surges Conference in Bordeax, France in November. I will be there to help and also present two other papers of my own. So where does New Jersey come into this?

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Recent Comments
Nicholas Matthews
I grew up in Nebraska, far from the influences of Spain and from as far back as I can remember, we called those blocks "Jersey Bar... Read More
Thursday, 23 August 2018 17:17
Trey Walters
Wow, I have lived in California, Ohio and now Colorado and this is news to me! I am sure Pedro will be happy to here this!
Thursday, 23 August 2018 17:36
Trey Walters
Thank you Javier! That is very interesting. To other blog readers, Javier works with David Lozano at AQUATEC - SUEZ Group and I me... Read More
Thursday, 23 August 2018 20:50
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