AFT Blog
Learn how to use AFT Fathom and AFT Arrow to help calculate the Likelihood of Failure (LOF) for Flow Induced Vibration (FIV), Acoustic Induced Vibration (AIV), and Flow Induced Pulsation (FIP) in accordance with Energy Institute Guidelines to avoid vibration induced fatigue failure. Introduction to Vibration Induced Fatigue and Failure Repeat...
AFT Fathom, AFT Arrow, AFT Impulse, and AFT xStream all have a tab in the Pipe Properties window called "Fittings & Losses" which allows users to quickly specify K factors for components within a pipeline such as valves, elbows, and area changes. The Fittings & Losses allow you to simplify your model and avoid workspace clutter by inte...
In the final "Know Your Pump & System Curves" blog series, I am going to discuss the complexities behind pump vs. system curves for systems with pumps in series and parallel configurations. Multiple pumps in series configurations are relatively straight-forward and will be discussed briefly. Operating pumps in parallel configuration involve a f...
In this blog, we dive further into pump and system curves for complex systems. The examples include demonstrating system curves changing over time and when multiple system curves exist for a single system with multiple pumps in different locations of the system. Let us re-visit the multi-branched system example from the previo...
Gary Vanderplaats was one of my (exalted) professors in 1985 when I was a (lowly) Senior engineering student at UCSB. If not for Gary, there would be no GSC modules for AFT Fathom or AFT Arrow, and no new AFT Fathom ANS module either. Why? First, back in 1985 UCSB had a required course for ME students in Design Optimization. It was probably one of ...
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 ...
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.