Tom Walski, Ph.D., P.E.

Thomas Walski is a senior product manager at Bentley Systems, Inc. He has 40 years of experience in applied hydraulics. He is author of hundreds of journal papers and conference presentations and is the author or co-author of several books. He has won numerous awards for his work such as the best distribution and plant operation paper in the Journal AWWA on three occasions. In addition to developing software, he has served as a distribution system operations manager, engineering manager for a large water company, executive director at a regional sewer system and a university professor.

Are Your Pressure Gauges Calibrated?

May 10, 2022

Pumps & Systems magazine had a good article recently on the need to calibrate pressure gauges. They pointed out that pressure gauges (and sensors)..

Visualizing Pressure Zones

April 26, 2022

Trying to understand the relationship between pressure zones in a water distribution system, I had to quickly learn fairly complex systems. I..

AWWA Calibration Workshop

April 14, 2022

Join me June 12th at the AWWA Annual Conference and Exposition in San Antonio, Texas. I’ll be giving three presentations on water distribution model..

Including Disinfection By-Products in a Multi-Species Decay Model to Support Cost-Effective Chlorination

April 6, 2022

This blog is part of a guest learner series written by Ian Fisher, Ph.D., adjunct professor, Western Sydney University Water Group, Sydney,..

A Multi-Species Decay Model to Support Cost-Effective Chlorination in Distribution Systems

March 24, 2022

This blog is part of a guest learner series, and written by Dr. Ian Fisher, Ph.D. Dr. Fisher is an adjunct professor at the Western Sydney University..

Electromagnetic Pulses and Your Utility

March 16, 2022

Electromagnetic Pulses (EMPs) are short bursts of electromagnetic radiation. While small EMPs can occur normally, large EMPs can interfere with or..

What’s So Bad (Or Good) About The Colebrook-White Equation?

March 7, 2022

Most hydraulic engineers would admit that the Darcy-Weisbach equation is the most theoretically correct equation for head loss in pipe flow. It is..

Why I Don't Like Pumped Storage

January 13, 2022

In most water systems, the tank water levels “float on the system” (orange system in the profile below). The HGL in the tank is the same as the..

Can AMI Data Help with Modeling?

December 30, 2021

One of the sources of error in hydraulic modeling is the difficulty of knowing water demands with any real precision. Yet demand is what drives..