Technical Paper

Making the world a safer and better place - A plea for more data, validation cases and guidelines for waterhammer simulation

Jan 05, 2026
Trey Walters, P.E.
Trey Walters, P.E.
Trey Walters is currently Principal, R&D, Engineering Software at Datacor. He previously founded Applied Flow Technology which is now part of Datacor. He has developed simulation software for pipe flow, system optimization, slurries, waterhammer, and pulsation modeling. He has 40 years of experience in thermal/fluid system engineering and has consulted in numerous industries including power, municipal water, oil & gas and chemicals. He holds both a Bachelor and Masters Degree in Mechanical Engineering. He sits on several standards committees of the Hydraulic Institute and is Chairman of their Waterhammer Committee, and he is a Fellow of the ASME.

Trey Walters, P.E., Applied Flow Technology, USA and G G Orieux, Q Li, L Thomson, Enbridge Pipelines Inc, Canada - 13th International Conference on Pressure Surges 2018, Bordeaux, France, November 14-16, 2018 

Engineers tend to overdesign systems when uncertainty exists. Overdesign is an important part of the engineering process, but unnecessary overdesign will only increase the cost of systems without enhancing safety. An experience between a major pipeline company, their engineering design firm, and the waterhammer simulation software products used by both is described. A disagreement between software package results and ultimately the two companies developed into an issue that could significantly increase costs. More and better validation cases would have helped everyone navigate this situation more quickly, easily and inexpensively. More and better application guidelines may have helped the engineering design firm achieve higher certainty in their recommendations with potentially less overdesign.

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