AFT Blog
Ensuring your pump has sufficient net positive suction head available (NPSHA) is essential to reliable pump performance. For positive displacement pumps, this includes accounting for acceleration head, which will reduce a pump's NPSHA. What is acceleration head? Acceleration head is the energy required to change the velocity of the liquid in the sy...
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...
Let's face it, specifying every pipe size, length, elevation, pump curve and component loss in a hydraulic model can be tedious. While essential to fully defining a system, often there is avoidable redundancy during model specification. The Global Edit feature helps to ease this tedium and redundant specification by mass updating overlapping parame...
Valves are often oversimplified during modeling. Understandably, defining a valve with its range of Cv at various open percentages requires much more information than an engineer may have during the initial design phase. However, just like handbook data, heuristics, and correlations, valves too can be reasonably approximated using their common char...
Pump vs. system curves provide an intuitive, graphic way to understand how a pump interacts with a piping system. These can be useful during pump sizing, but can also be informative when your pump must function in a variety of operating conditions. Understanding how changes to your pump or system affect your operating point can be invalua...
With the release of the Automated Network Sizing (ANS) module for AFT Fathom and AFT Arrow, network sizing has never been easier. The ANS module utilizes Intelliflow, a technology previously featured in AFT Mercury and Titan, to evaluate slight design deviations to automatically size pipes, valves, and pumps for a system as a whole. In ...