Overview

This book provides a comprehensive analysis of multiphase flow with bubbles, covering bubble dynamics, sound wave propagation in vapor/gas/liquid multiphase flow, and vapor/liquid/solid multiphase flow with sand particles. It begins by introducing the cavitation nucleation mechanism and examining bubble oscillation equations in liquids, including first-order and second-order models. Further discussions explore the mass transfer effects at the bubble wall, energy dissipation mechanisms, and bubble behavior under dual-frequency acoustic fields. Regarding sound wave propagation in vapor/gas/liquid multiphase flow, the book presents a wave speed prediction model, details the solution process and propagation characteristics, and examines how vapor fraction, bubble radius, and void fraction influence critical frequency and wave speed stability. The section on vapor/liquid/solid multiphase flow delves into the bubble collapse process, analyzing jet phenomena—including single jet, multi-jet, and needle jet formations—along with shock wave phenomena occurring during cavitation bubble nucleation, splitting, and collapse. Additionally, it explores the synergistic erosion effects of cavitation bubbles and sand particles on hydraulic machinery. Designed for academic researchers and graduate students in fluid dynamics, this book consolidates core theories, physical mechanisms, and the latest advancements in multiphase flow research.

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9783031992155

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Jinsen Hu received his Ph.D. from North China Electric Power University in June 2024. His research interests include cavitation and bubble dynamics, with a particular focus on experimental and numerical investigations of bubble collapse, micro-jets, and shock waves. He has contributed to the publication of 10 journal papers in these areas, in which he explored the splitting behavior of cavitation bubbles near particles and elucidated the formation mechanisms and evolution of jets and shock waves. Yuning Zhang is currently a professor in North China Electric Power University. He primarily focuses on the research in cavitation and bubble dynamics. He has published 2 monographs in Springer Press and over 90 papers (10 highly cited papers and 1 hot paper) in journals such as Nature Communications, Physics of Fluids, and Energy. He was ranked by Stanford University as one of the “top 2% of scientists in the world by 2023”. In addition, he is an associate editor of IET Renewable Power Generation and an editorial board member of 6 international/national journals, such as the Journal of Hydrodynamics. He also serves as Chairman of the International Cavitation Forum 2016, a member of the organizing committee of the WIMRC International Symposium of Cavitation (UK) and many other international conferences, and has given six invited talks on international conferences. He has received many awards from the Society of Energy and Electric Power in China. Yongpan Cheng is mainly engaged in the research on the dynamics of bubble and droplet. He is Marie Curie Fellow in the European Union. So far he has published more than 50 journal papers in journals with over 2000 citations, such as Langmuir, Physics of Fluids, and Int. J. Heat and Mass Transfer. He serves as an editorial board member in the International Journal of Hydromechatronics. He co-organized several international conferences, such as the International Heat Transfer Symposium (2014, 2016), and is a guest editor for several journals, such as Applied Thermal Engineering, Industrial & Engineering Chemistry Research, etc. He has given more than 10 invited talks at international conferences.

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