Authors: Chaoqun Liu, Qin Li, Yonghua Yan, Yong Yang, Guang Yang, Xiangrui Dong

Series Title: Frontiers in Aerospace Science

High Order Large Eddy Simulation for Shock-Boundary Layer Interaction Control by a Micro-ramp Vortex Generator

Volume 2

eBook: US $129 Special Offer (PDF + Printed Copy): US $220
Printed Copy: US $155
Library License: US $516
ISSN: 2468-4716 (Print)
ISSN: 2468-4724 (Online)
ISBN: 978-1-68108-598-2 (Print)
ISBN: 978-1-68108-597-5 (Online)
Year of Publication: 2017
DOI: 10.2174/97816810859751170201

Introduction

This volume presents an implicitly implemented large eddy simulation (ILES) by using the fifth order bandwidth-optimized WENO scheme. The chosen method is applied to make comprehensive studies on ramp flows with and without control at Mach 2.5 and Re=5760. Flow control in the form of microramp vortex generators (MVG) is applied. The results show that a MVG can distinctly reduce the separation zone at the ramp corner and lower the boundary layer shape factor under the condition of the computation. A series of new findings about the MVG-ramp flow are obtained, including the structures of the surface pressure, the three-dimensional structures of the re-compression shock waves, the complete surface separation pattern, the momentum deficit and a new secondary vortex system.

A new mechanism of shock-boundary layer interaction control by MVG associated with a series of vortex rings is also presented. Vortex rings strongly interact with air flow and play an important role in the separation zone reduction. Additionally, readers will learn about the governing equation, boundary condition, high quality grid generation, high order shock capturing scheme and DNS inflow condition in detail. This volume will, therefore, serve as a useful reference for aerospace researchers using LES methods to study shock boundary layer interaction and supersonic flow control.

Contributors

Author(s):
Chaoqun Liu
Center for Numerical Simulation and Modeling
Department of Mathematics
University of Texas at Arlington
Arlington, Texas, TX
USA


Qin Li
Center for Numerical Simulation and Modeling
Department of Mathematics
University of Texas at Arlington
Arlington, Texas, TX
USA


Yonghua Yan
Department of Mathematics and Statistical Sciences
Jackson State University
Jackson, Mississippi
USA


Yong Yang
School of Engineering, Computer Science and Mathematics
West Texas A&M University
WTAMU Box 60787
Canyon, TX 79016-0001
USA


Guang Yang
Center for Numerical Simulation and Modeling
Department of Mathematics
University of Texas at Arlington
Arlington, Texas, TX
USA


Xiangrui Dong
National Key Laboratory of Transient Physics
Nanjing University of Science & Technology
Nanjing, Jiangsu, 210094
China




RELATED BOOKS

.Conceptual Design of Green Transport Airplanes.
.Aerospace Structures and Materials.
.Structural Failure Analysis and Prediction Methods for Aerospace Vehicles and Structures.