Overview

This book describes the fundamental phenomena of, and computational methods for, hydraulic transients, such as the self-stabilization effect, restriction of the Joukowsky equation, real relations between the rigid and elastic water column theories, the role of wave propagation speed, mechanism of the attenuation of pressure fluctuations, etc. A new wave tracking method is described in great detail and, supported by the established conservation and traveling laws of shockwaves, offers a number of advantages. The book puts forward a novel method that allows transient flows to be directly computed at each time node during a transient process, and explains the differences and relations between the rigid and elastic water column theories. To facilitate their use in hydropower applications, the characteristics of pumps and turbines are provided in suitable forms and examples. The book offers a valuable reference guide for engineers and scientists, helping them make transient computations for their own programming, while also contributing to the final standardization of methods for transient computations.

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9783030402358

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Dr.-Ing. Zh. Zhang currently serves as senior engineer at the Institute of Energy Systems and Fluid Engineering of Zurich University of Applied Sciences (ZHAW), Winterthur, Switzerland. He received his PhD at the Institute of Thermo and Fluid Dynamics of Ruhr-University Bochum, Germany. Afterwards he joined Sulzer Markets & Technology Ltd in Winterthur, Switzerland for experimental research of engineering flows. He later joined the Oberhasli Hydroelectric Power Company (KWO), and eventually Rütschi Fluids AG. In 2015-2016 he served as visiting engineer at the Laboratory of Hydraulics, Hydrology and Glaciology of ETH Zurich.

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