Stabilization of Hypersonic Boundary-Layer: Acoustic Metasurfaces

This book explores the mechanisms and applications of acoustic metasurfaces in the hypersonic transition control area. It begins with an introduction of the concepts of acoustic metasurface and hypersonic boundary-layer stabilization, which also provides a full scene of the research progress in the past two decades. This book then discusses the modeling methods of various acoustic metasurfaces, including the regular and irregular ones, and describes how the models are to be used in theoretical analysis and numerical calculations. The design strategies and optimization methods are presented to promote the applications in the engineering community. The possible stabilization mechanisms are explored, and the proposed analysis methods are used to clarify other flow instabilities. This book delivers valuable insight for aerospace engineers, postgraduate students, and researchers.

Dr. Rui Zhao is currently Associate Professor of School of Aerospace Engineering, Beijing Institute of Technology. He received his Ph.D. from Beijing University of Aeronautics and Astronautics in 2013 and was appointed as Visiting Scholar at Hong Kong Polytechnic University in 2017. Associate Professor Zhao is Fellowship of China Aerodynamics Society, and he is awarded the Excellent Individual Awards of the First Exploration of Mars Mission of China. He also severs as Associate Editors in many academic journals. His main research areas include hypersonic complex flow, transition and turbulence modeling, fluctuating pressure environment, etc.

Dr. Guohua Tu is Research Fellow and Vice President of State Key Laboratory of Aerodynamics. He is also Editor of Journal of Experiments in Fluid Mechanics and Young Editor of Acta Mechanica Sinica. He works on boundary-layer transition and basic researches of National Numerical Wind Tunnel. He has authored and co-authored more than 70 scientific papers and was also awarded 20 patents, a first-level provincial prize as well as a third-level ministerial prize.

Professor Jun Liang is an awardee of China's prestigious National Science Fund for Distinguished Young Scholars and a nationally recognized expert honored through the Hundred-Thousand-Ten Thousand Talents Program with the State Council Special Allowance. He currently serves as Deputy Secretary-General of the Chinese Society for Composite Materials while directing its Science and Technology Evaluation Committee, in addition to holding executive leadership roles in SAMPE Beijing. With systematic research achievements spanning mechanics of composite materials, performance characterization of thermal protection structures, and multifunctional lightweight design. With 200+ peer-reviewed publications and an authoritative monograph, his theories have become fundamental references for composite engineering applications. 

Professor Chihyung Wen is currently the Head and Chair Professor of Aeronautical Engineering of the Department of Aeronautical and Aviation Engineering, and the Associate Director of Research Institute for Sports Science and Technology. Professor Wen has authored and co-authored more than 300 scientific papers, conference papers and book chapters. He was also awarded 14 patents. Professor Wen, currently a HKIE Fellow and an AIAA Associate Fellow, actively engages in professional academic activities related to mechanical and aerospace engineering at both domestic and international levels. In addition, he serves as a member of, various key professional boards and bodies related to the Aerospace Engineering.