Direct Numerical Simulation And Experimental Validation Of Hypersonic Boundary Layer Receptivity And Instability
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Author | : Xiaolin Zhong |
Publisher | : |
Total Pages | : 46 |
Release | : 2007 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
The objective of this research project is to compare our numerical simulation solutions with available experimental or theoretical results on hypersonic boundary layer receptivity and stability; and to conduct extensive DNS studies on the flow mechanisms of hypersonic boundary layer receptivity and stability. During the three-year period, we have conducted extensive DNS studies on the receptivity of hypersonic boundary layer flows over a sharp wedge, a flat plate, a blunt cone, and the FRESH aeroshell. DNS studies are compared with Stetson's 1984 stability experiment on Mach 7.99 flow over a blunt cone, and Maslov's leading-edge receptivity experiment on Mach 5.92 flow over a flat plate. Our numerical studies have been validated to be of high accuracy and led to further understanding of hypersonic boundary layer receptivity mechanism. Such understanding can lead to better tools for the prediction and control of high-speed boundary layer transition.
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Author | : Doyle Knight |
Publisher | : Springer Science & Business Media |
Total Pages | : 516 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 940114513X |
This collection of papers presents a broad range of topics in DNS and LES, from new developments in LES modeling to DNS and LES for supersonic and hypersonic boundary layers. The book provides an extensive view of the state of the art in the field.
Author | : |
Publisher | : |
Total Pages | : 440 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 560 |
Release | : 2005 |
Genre | : Fluid dynamics |
ISBN | : |
Author | : Holger Babinsky |
Publisher | : Cambridge University Press |
Total Pages | : 481 |
Release | : 2011-09-12 |
Genre | : Technology & Engineering |
ISBN | : 1139498649 |
Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.
Author | : Jie Ren |
Publisher | : Springer |
Total Pages | : 110 |
Release | : 2017-10-27 |
Genre | : Technology & Engineering |
ISBN | : 9811068321 |
This thesis first reveals the mechanism of Görtler instabilities and then demonstrates how transitions at hypersonic flows can be effectively controlled (either promoted or suppressed) with Görtler or Klebanoff modes. It focuses on understanding and controlling flow transitions from mild laminar to fully turbulent flows at high speeds—aspects that have become crucial at the dawn of an incredible era, in which hypersonic vehicles are becoming available. Once this occurs, it will be possible to travel from Beijing to Los Angeles within just 2 hours, and we will all live in a genuinely global village—and not just virtually, but physically. Görtler instabilities have often been used to promote flow transition in hypersonic vehicles. However, how Görtler instabilities are excited and how they evolve in hypersonic flows are questions that have yet to be answered.
Author | : |
Publisher | : |
Total Pages | : 974 |
Release | : 1999 |
Genre | : Aeronautics |
ISBN | : |
Author | : Louis J. Williams |
Publisher | : |
Total Pages | : 232 |
Release | : 1991 |
Genre | : Aerodynamics |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 400 |
Release | : 1948 |
Genre | : Mechanics, Applied |
ISBN | : |