AFT Blog

Welcome to the Applied Flow Technology Blog where you will find the latest news and training on how to use AFT Fathom, AFT Arrow, AFT Impulse, AFT xStream and other AFT software products.

Databases 101 - Get to Know Them

Amongst the vast multitude of superbly efficient features within AFT Software, the customization and Database capabilities are certainly of significant importance.  If you are not familiar with how to use the Databases within our software to manage your customized information, then getting familiar should be a top priority for what you learn how to do next in our software.  Making effective use of Databases will save you and your team of AFT users incredible amounts of time! The vast amounts of data that you can customize within our software includes: Components (junctions)Fluid propertiesPipe materialsPipe insulationFittings & Losses (that get lumped into...

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How Many Models of the Same System Do You Have?

Well, if the answer is "more than one", then you are probably struggling to deal with way more model files than you need to be.  With all AFT products, the Scenario Manager is an incredibly powerful feature that allows one to model several different cases within a single model file. This includes different operating conditions, multiple pump configurations, different piping, system expansions, hot days, cold days, insulation, fouling and pipe scaling, etc. The list of different cases that can be modeled is essentially endless! So, I have said it once, and I will say it again...The Scenario Manager is one of...

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Using Groups

Groups of pipes and junction can be named for later recall. This is done using the Group Tools on the Edit menu. Groups may have subgroups, and pipes and junctions may be members of multiple groups. To create a group select the pipes and junctions you want in the group, then select Edit/Groups...Create. Specify a name for the group, click OK and the Group Manager will be displayed showing the pipes and junctions in the group. Group Manager can also be used to add or remove pipes and junctions from an existing group, rename a group or delete a group. After...

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Using Duplicate Special to Easily Model Different Cases of an Single System

With AFT products, the Scenario Manager is an incredibly powerful feature that allows one to model several different cases in only one model file.  This includes different operating conditions, multiple pump configurations, different piping, system expansions, etc.  The list of different cases to model is essentially endless! Now, what if you have a single system and you would like to quickly model several cases where perhaps only a few parameters are changing?  You can start by building a single system on the Workspace.  Then you can use the “Duplicate Special” feature in the Edit menu to duplicate the entire system and...

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Modeling Area Changes As Additional Pipe Fittings

If you have a system where there are several area changes throughout the piping, modeling every single area change and connecting pipe can become taxing and time consuming.  Also, the more pipes and junctions that are in a model, the higher the complexity. With AFT software, it is very simple to include the area change losses in the pipes themselves! As seen in the Pipe Fittings and Losses screen shot below, there are four area change types that can be used and either abrupt or conical shapes can be modeled.  The key to determining which expansion or contraction type to use...

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Multi Scenario Output

Viewing the output from multiple scenarios in the same window can be a valuable and time saving tool! You must have output available for each of the scenarios you would like review. One way to do this is by executing a batch run: Select “Start Batch Run…” from the file menu.Click “Add Scenarios” and select which scenarios you would like to include in your multi-scenario output.Click “Start Run” and sit back while each of the scenarios is run. In order to view output from multiple scenarios in the same window, follow these steps: Browse to the Output window of one of...

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How to Fill as Quadratic

Filters and screens impose a pressure drop that varies with flow rate. The variation is non-linear, but manufacturers will often provide only one data point for pressure loss at the design flow rate. Using a single point, or constant pressure drop, can produce significant inaccuracies in your model. With this in mind, AFT offers the “Fill As Quadratic” option for entering loss data. Using only a single point, “Fill As Quadratic” will create two additional points for you. This first is simply 0,0; zero flow produces zero pressure drop. The second point is 2 x Flow and 4 x Pressure Drop....

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