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Trey Walters

A Trillion Dollar Waterhammer Problem? Oh My!

An article published this month in the AWWA Opflow trade magazine relates that America has a trillion dollar problem with our municipal water distribution system due to pipe failures. This information is old news to the water industry. What is novel about this article is that it suggests the issue is largely caused by waterhammer (see Stop Costly W...
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Rafael Hoyer

Now it’s Super Easy! Changing Input Data in AFT Models using Excel Change Data

We've previously discussed how to make input data changes in AFT Models using the Excel Change Data feature on other blogs , but since we are continuously asked about expedited ways to input and change data, we've updated our feature to make things even easier. AFT Software has an abundance of features that make the model input process tremendously...
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Trey Walters

Turning Negative Experiences Into New Directions

Twenty-five years ago I did something I thought I would never do. My job at the time had become pretty bumpy and I was not happy. With hard work and good luck, I turned that negative experience into a new direction for me personally and professionally. That new direction involved starting a whole new company. On September 14, 1993. So, I have been ...
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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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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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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 customer 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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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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Ben Keiser

Intermediate Elevations and Splitting Pipes

Hello AFT readers! It has been quite a while since I have written a blog for you all. I had a recent discussion with a user and discovered a couple pain points that may be common. We did not have any blogs on the topics yet and I figured it was time to get back in the game and write another blog for our readers! The pain points were: 1. Modeling sy...
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Aaron Ren

AFT Fathom District Heating Application

In district heating projects, hot water is the most commonly used heating medium. In order to ensure the user's heat load requirements, it is necessary to analyze and calculate the flow balance of the entire district heating system to ensure that different cases can meet the requirements of end users. 

AFT Fathom is practical fluid dynamic simulation software used to calculate pressure drop and flow distribution in liquid piping and ducting systems. I think AFT Fathom is a great choice for district heating projects.

The district heating network model of this project is bigger, and it includes the long supply line and return line, several booster pump stations, about 50 end users(exchangers), many control valves. This project has been running for 2 years, but some end user cannot get enough heat, so the owner hope us to get the reason. 
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