Author: Wei TsengPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Numerical Simulation of Dynamic Lift Enhancement Using Oscillatory Leading Edge Flaps
Author: Wei TsengNumerical Simulation of a Powered-Lift Landing, Tracking Flow Features Using Overset Grids, and Simulation of High Lift Devices on a Fighter-Lift-And-Control Wing
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722426033
Category :
Languages : en
Pages : 28
Book Description
Attached as appendices to this report are documents describing work performed on the simulation of a landing powered-lift delta wing, the tracking of flow features using overset grids, and the simulation of flaps on the Wright Patterson Lab's fighter-lift-and-control (FLAC) wing. Numerical simulation of a powered-lift landing includes the computation of flow about a delta wing at four fixed heights as well as a simulated landing, in which the delta wing descends toward the ground. Comparison of computed and experimental lift coefficients indicates that the simulations capture the qualitative trends in lift-loss encountered by thrust-vectoring aircraft operating in ground effect. Power spectra of temporal variations of pressure indicate computed vortex shedding frequencies close to the jet exit are in the experimentally observed frequency range; the power spectra of pressure also provide insights into the mechanisms of lift oscillations. Also, a method for using overset grids to track dynamic flow features is described and the method is validated by tracking a moving shock and vortices shed behind a circular cylinder. Finally, Chimera gridding strategies were used to develop pressure coefficient contours for the FLAC wing for a Mach no. of 0.18 and Reynolds no. of 2.5 million. Chawla, Kalpana Unspecified Center NCC2-563...
International Aerospace Abstracts
Author: 31st Aerospace Sciences Meeting and Exhibit: 93-0180 - 93-0219
Author: Aeronautical Engineering
Author: Aerospace America
Author: Flow Control Techniques and Applications
Author: Jinjun WangPublisher: Cambridge University Press
ISBN: 1107161568
Category : Science
Languages : en
Pages : 293
Book Description
Master the theory, applications and control mechanisms of flow control techniques.
Scientific and Technical Aerospace Reports
Author: Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 300)
Author: Recent Progress in Flow Control for Practical Flows
Author: Piotr DoerfferPublisher: Springer
ISBN: 3319505688
Category : Technology & Engineering
Languages : en
Pages : 505
Book Description
This book explores the outcomes on flow control research activities carried out within the framework of two EU-funded projects focused on training-through-research of Marie Sklodowska-Curie doctoral students. The main goal of the projects described in this monograph is to assess the potential of the passive- and active-flow control methods for reduction of fuel consumption by a helicopter. The research scope encompasses the fields of structural dynamics, fluid flow dynamics, and actuators with control. Research featured in this volume demonstrates an experimental and numerical approach with a strong emphasis on the verification and validation of numerical models. The book is ideal for engineers, students, and researchers interested in the multidisciplinary field of flow control.