Learn more about how you can use hydraulic modeling tools to efficiently calculate pressure drops, flow distribution, pump and system curves, identify BEP, or how to model harmful transients within your piping system.

AFT Fathom - Steady-State Flow Analysis Software


AFT Impulse - Waterhammer & Surge Analysis Software


5 Reasons Why You Should Analyze Your System for Waterhammer / Surge

AFT Fathom helps you calculate your system's steady-state pipe flow condition...but did you consider:

  1. How valves, pumps and other components will dynamically interact with each other during a surge event?
  2. The forces generated by transient pressures needed to design your pipe supports?
  3. If you are in compliance with ASME B31.3 requirements for occasional loads?
  4. Will your system experience significant pressure surges due to cavitation?
  5. If you have the right surge suppression equipment to mitigate the catastrophic effects of waterhammer/surge and other undesirable system transients?

Luckily, exporting your AFT Fathom™ model to AFT Impulse™ will save you time as you answer these questions and validate the design of safety features to produce safer and more economical pipe systems.

Contact AFT for information or to schedule a personal demonstration

Powerful Features


Import GIS Shapefiles, CAESAR II Neutral files and Piping Component Files (PCF) as well as import / export EPANET files


Excel Export Manager can automatically export data during a batch of scenarios. Data can be exported to specific cells.


"Test Drive" operating conditions and scenarios to determine sizes, pressures, temperatures, etc... to fix or upgrade systems


Accurately simulate individual system components interaction prior to building to ensure cost-effective & efficient designs

Case Study

Significant Man-Hours Saved by Transitioning
AFT Fathom Model to AFT Impulse to Analyze Surge Transients

Loukas Papathanasiou, Process Manager for Fluor, utilized AFT Fathom and AFT Impulse to complete the design of a cooling water system and the analysis of that system’s surge transients. Using both software programs together gave him the ability to easily simulate, analyze, and troubleshoot the massive system.

Using AFT Fathom

Papathanasiou created a steady-state model in AFT Fathom to simulate the cooling water hydraulics during a major upgrade to a refinery in Kuwait. Part of the Kuwait National Petroleum Company (KNPC) Clean Fuels Project (CFP), the Mina Abdullah Refinery was expanded to refine 454,000 bpd via this multi-billion-dollar project.

Fluor designed and constructed the new cooling water system, which circulates 40,300 m3/h (177,000 gpm) of cooling water to the new CFP units.

Papathanasiou used AFT Fathom to size the equipment and to model heat transfer to determine fluid temperatures.

The AFT Fathom model made extensive use of the heat exchanger feature to properly size and ensure the capacity of the equipment for the upgrade. 

Built by Engineers for Engineers

We can't tell you how many customers tell us they will only commission a system if an AFT analysis was run on it prior to handing it over. One customer told us about a time they ran an analysis, but the logic didn't seem ….well logical… to the other design engineers. They built the piping system the way they deemed it logical. And it was wrong. They went back to the AFT analysis and built it how the pipe flow model showed the system would run. They spent several weeks and a lot of unnecessary dollars because what seemed illogical was the most logical after all. 

You see, AFT doesn't create hydraulic flow analysis tools simply because we like to ensure pipe calculations and sizes are correct; we are a software built by engineers for engineers to help make your piping system design run as efficiently as possible and to ensure you are able to troubleshoot transient issues in a timely fashion. 

Most engineers recognize how easy and reliable AFT Fathom is. It gives engineers at all levels the ability to design and troubleshoot their steady-state fluid systems in AFT Fathom. What most are unaware of, is those same engineers can use AFT Impulse to analyze the transients to see how the system will behave in the event of a power outage, a pump trip, a valve slam, evaluate vapor cavities, or pressure extremes.

Let us show you how AFT Impulse can help you be proactive in designing sustainable and safe piping systems.

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