CFD-Compatible RANS/LES Modeling of Transitional and Separated Flows

This book investigates in detail boundary layer transition-turbulence modeling methods, which is a hot research topic in fluid mechanics and aerospace engineering. It introduces detailed physical model construction ideas and extensive calculation examples, which will enable readers to learn how to choose the correct model to use, understand the whole process of physical model construction, and learn how to develop new models. Studies on transition-turbulence models have attracted engineers and scientists from various disciplines, such as aerospace engineering, wind energy, ocean engineering and engine engineering. Pursuing a holistic approach, the book establishes several classical/representative transition-turbulence models for engine internal and external flows, while emphasizing the importance of PDE transport equation establishment and local computation methods for non-local variables. It is intended for post-graduate students and researchers who are interested in computational fluid dynamics and transition-turbulence modeling or aerodynamic shape design (laminar flow design and control).

Chapter 1 IntroductionChapter- 2 Development and Enhancement of the Very Large Eddy Simulation Method.- Chapter 3 Prediction Methods for Bypass Transition and Separation-Induced Transition.-    Chapter 4 Transition Prediction Methods Considering the Effects of Surface Roughness.- Chapter 5 Modeling and Application of the VLES Method Considering the Influence of Transition and Surface Roughness.

Prof. Jiakuan Xu received his B.E., M.E. and Ph.D. degree in Aerospace Engineering from Northwestern Polytechnical University, Xi’an, China, in 2012, 2015 and 2017. From 2017 to 2020, Dr. Xu has been working in Tianjin University and Imperial College London as a post-doc. Since Jul. 2020, Dr. Xu has been in the School of Aeronautics, Northwestern Polytechnical University as an Associate Professor and a Professor. He focuses on the research of Computational Fluid Dynamics (CFD) and aerodynamics design of aircraft. His recent research interests include: transition-turbulence modeling, flow instability and flow control, etc. Since 2008, Dr. Xu has published 56 peer-reviewed technical papers in international journals and conferences. He is a member of AIAA and the Chinese Society of Aeronautics and Astronautics, and served as an editorial board member of several international journals («Journal of Mechanics», «Journal of Hydrodynamics», etc.). In 2023, he received the Second Prize of Science and Technology Award from the Chinese Society of Aeronautics and Astronautics. In 2021, he received the Second Prize of Science and Technology Award from Shaanxi Province.

Prof. Min Chang received his B.E., M.E. and Ph.D. degree in Aerospace Engineering from Northwestern Polytechnical University, Xi’an, China, in 2008, 2011 and 2014. From 2014 to 2017, Dr. Chang had been working in Xi'an Modern Control Institute as an engineer. Since Jul. 2017, Dr. Chang has been in Unmanned System Research Institute of Northwestern Polytechnical University as a Professor. He focuses on the research of Computational Fluid Dynamics (CFD) and Multi-disciplinary Design of Multi-domain Unmanned Aerial Vehicles. Since 2008, Dr. Chang has published 35 peer-reviewed technical papers in international journals and conferences. In 2023, he received the Second Prize of Science and Technology Award from the Chinese Society of Aeronautics and Astronautics.

Professor. Junqiang Bai received his B.E. degree in Aerodynamics from National University of Defense Technology in , M.E. and Ph.D. degree in Aerodynamics and Flight Mechanics from Northwestern Polytechnical University, Xi’an, China, in 1991, 1994 and 1997. From 1997 to 1999, Dr. Bai had been working in Northwestern Polytechnical University as a Post-Doc. Since Aug. 1999, Dr. Bai has been in School of Aeronautics, Northwestern Polytechnical University as an Associate Professor and a Professor. He focuses on the research of Aircraft Design, Flight Mechanics and Computational Fluid Dynamics (CFD). His recent research interests include: aerodynamics optimization design, turbulence modeling, and UAVs design, etc. Since 1991, Prof. Bai has published over 300 peer-reviewed technical papers in international journals and conferences. He is a member of the Chinese Society of Aeronautics and Astronautics, and served as reviewers of AIAA Journal, Journal of Fluid Mechanics, Chinese Journal of Aeronautics, etc. In 2024, he received the First Prize of Science and Technology Award from the Chinese Society of Aeronautics and Astronautics. In 2021, he received the Second Prize of Science and Technology Award from Shaanxi Province.