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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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Trey Walters

2000 Years of Roman Pipe Technology and 100 Years of American Pump Technology

This past week I and Jeff Olsen, AFT’s V.P. of Technology, attended the annual conference of the Hydraulic Institute . The Hydraulic Institute (HI) was founded in 1917 and is America’s premiere pump organization. At this year’s meeting HI held a centennial celebration . For a technology organization like HI, 100 years is quite a feat and was rightly celebrated at the annual meeting this year. Many of you are familiar with HI through the standards HI creates. These standards show up in AFT Fathom in several places: Intake design  (pump submergence to avoid vortex formation) Pump viscosity corrections Slurry pumps...
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Trey Walters

(Almost) Live Report From the HUUUUGE MINExpo in Las Vegas

This week I was in Las Vegas at the 2016 MINExpo . AFT had a booth at the show and I hoped to publish this during the show and call it a "live" report. Alas I did not get it completed and the show ended yesterday. Hence it is "almost" live. Over the years I have had the privilege to teach training classes to mining companies on five continents. AFT has been active in support of the needs of the mining industry since we released the Settling Slurry (SSL) module for AFT Fathom in 2009 and the SSL module for AFT...
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Trey Walters

The Two P's: Why You Should Care That AFT is Celebrating Its 20th Year

There are two good reasons you should care that Applied Flow Technology is celebrating it's 20th anniversary this year. First is because 20 years in business means that AFT software is proven . Second is because of the prizes we are giving away this year. Twenty of them no less! Come along with me while I elaborate on what AFT has achieved in the last 20 years. And explain more about the two P's. A Vision for the Visual The last 20 years has been a long and exciting journey. When AFT Fathom was released in April 1994, it was the...
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Trey Walters

Who Cares About the Surge in "Funny" Fluids?

Well, it turns out lots of people. My first experience with "funny fluids" was in graduate school. One of my fluids professors had recently completed his doctoral thesis on funny fluids also known as non-Newtonian fluids. I got to see some of his graduate students do some crazy experiments with polymer additives to otherwise boring Newtonian fluids. Funny, non-Newtonian fluids are often broken into two categories:  Homogeneous fluids which encompasses non-settling slurries where the fluid and solids behave in an aggregate, homogeneous manner Heterogeneous fluids which encompasses settling slurries where the fluid and solids behave somewhat independently The applications where non-Newtonian fluid...
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