Dynamic solutions for a fluid world™

Scott is an Engineering Software Developer at AFT, researching, improving, and creating models for fluid analysis within AFT products. Scott is a certified Engineer in Training and holds a Bachelor of Science in Mechanical and Electrical Engineering (2011) from Colorado School of Mines.
Scott Lang

Start your engines! Modeling an Inertial Pump Startup

There are many (six!) ways to define a pump transient event in AFT Impulse . This gives you great flexibility in creating a model that behaves the way you want it to. One thing true for all pumps is that they must be started at least once. Pump startups often cause significant transient effects on the system so you may wish to model this with AFT Impulse. Even narrowing your pump transient down to a startup, there are still four models left to choose from: Without Inertia Startup With Inertia and No Back Flow or Reverse Speed Startup With Inertia -...
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Scott Lang

When to Begin? Time and Events in Transient Studies

To define any transient event in AFT Impulse or AFT Fathom XTS the application must know when it begins. To do so, the user should know how time and event logic is approached in AFT’s transient solvers. In this article, we will discuss the three different time bases used in the applications, the selection of a single or repeating event, and the many possible triggering events that can start the user defined transient. The user defines these items in the Initiation of Transient section of the junction’s Transient tab. The requirements for each junction can vary, but the general approach applies...
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