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Welcome to the Applied Flow Technology Blog.
Dylan Witte

Don’t Be Negative! Be Positive!

Often times when building larger network models, you may not be sure what the direction of the flow will be and running the model is the only way to determine the flow direction. In the below AFT Arrow model it might be hard to determine what way the flow convention is in some of the loops. After running this model there are cautions stating that flow is negative through junctions that may have loss factors that are dependent upon direction. What is the easiest way to fix this? You could compare your results, remember or make a table of what...
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Ben Keiser

What Good is a Map Without Colors?

What Good is a Map Without Colors?
Each AFT software product employs five Primary Window tabs in which you would build, define, and analyze the model of your system.  Of these, the Visual Report window is incredibly useful in that you are able to overlay your model input or output parameters directly on top of the graphical layout of the system itself.  This is an excellent feature to use when you want to provide the bottom line results to clients and colleagues at a high level (or a detailed level).  Figure 1 is an example of what the Visual Report for a particular system might look like....
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Ben Keiser

Goodbye Graph Sets! Hello New Graph List Manager!!

Goodbye Graph Sets!  Hello New Graph List Manager!!
AFT software products have had powerful graphing capabilities for a very long time.  Many types of graphs can be created with AFT products such as pump vs. system curves, profile plots along a flow path, gradelines and elevation profiles, transient plots (with AFT Impulse or the AFT Fathom XTS module ), slurry system curves (with AFT Fathom SSL or AFT Impulse SSL modules), and selected solutions that allow you to plot various output parameters for desired pipes. All of these graphing capabilities are incredibly important to engineers as they analyze the hydraulic behavior of their system.  The ability to customize...
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Erin Onat

Making the AFT Workspace Your Own: Workspace Customization Options and Modeling Tips that Visually Enhance Your Hydraulic Model

Engineers using AFT hydraulic software ( Fathom , Arrow , and Impulse ) know that they are utilizing powerful flow modeling tools capable of modeling real fluid behavior in simple and complex piping networks, but many are often unaware that our software also provides a vast array of customization options that can visually aid the user’s understanding of the physical layout of the modeled system and help highlight important model components. Even though these visual options do not affect the hydraulic calculations, they can greatly improve modeling efficiency and overall model comprehension, especially if the model is shared between engineers...
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Ben Keiser

Behold The New Design Alert Manager!

One of the newest features of AFT Fathom 9 that will add a lot more efficiency to analyzing your results is the new Design Alert Manager!  In addition to the new Design Alert Manager, it is also possible to add general Design Alerts for junctions such as inlet or outlet pressure, or perhaps the pressure loss across a junction. In previous versions of our software, it would be possible to create different Design Alerts for pipes where you could specify a minimum or maximum value for a particular output parameter such as a maximum pressure limit, minimum flow rate, maximum...
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Jake Miller

Join our Denver Safari Workshop and User Group this November 17th

You may be asking yourself why we are advertising our Denver area User Group and first ever AFT Software Workshop in a Tips and Trick blog. Well that answer is quite simple really. As an ongoing effort to make the strongest relationship with our User’s and thus helping us to provide our community, which includes You, with the best tools ever, we yearn for the chance to talk to those that make use of our powerful tools! So we hereby cordially invite you to attend our 2015 Denver Area User Group meeting. Come see how other Users, like yourself, are...
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Erin Onat

Calculating Flow Through an Orifice Using ASME MFC-3M-1989 and Irrecoverable Pressure Drop Equations

Recently, a customer calculated the mass flow rate of a fluid through an orifice using both the ASME standard MFC-3M-1989 and AFT Arrow. He was puzzled when this mass flow rate calculation differed by approximately 100 lb m /hr between the two methods, so he reached out to AFT for help in determining the reason for the discrepancy. The answer for the difference in flow rates on a basic level is that these two calculations are, fundamentally, not the same thing; ASME correlates differential pressure at pressure taps for purposes of flow measurement, while AFT Fathom and Arrow calculate the...
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Recent Comments
Erin Onat
Hi Eric and thank you for the question. The main point here is that the dP you are measuring across the orifice IS NOT equal to t... Read More
Thursday, 28 July 2016 15:39
Erin Onat
Hi Jesus, Thank you for your comment. A definitive answer to your question is outside the scope of this blog and the advice I c... Read More
Monday, 07 August 2017 15:59
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