Separated Flow Studies at Hypersonic Speeds: Separated flows over axisymmetric spiked bodies PDF Download
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Author: Michael Holden
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 88
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Book Description
Author: Michael Holden
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 88
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Book Description
Author: Michael Holden
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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Book Description
One objective of the report was to obtain detailed information on the heat transfer generated in the reattachment region of a conical shear layer, and determine the influence of reattachment angle, free stream Mach number and downstream expansion on this phenomena. A second objective was to make a systematic study of the parameters which influence the protection of aerodynamic surfaces by means of spiked induced separated flows. The parameters varied were spike length, body shape and free stream Mach number. Measurements of the distribution of heat transfer together with schlieren photographs of the flow over the spiked cones at Mach numbers of 10 and 15 has provided information on the variation of reattachment heat transfer and total heat transfer with body shape and free stream Mach number.
Author: James N. Moss
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 30
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Book Description
This paper describes the results of a numerical study of interacting hypersonic flows at conditions that can be produced in ground-based test facilities. The computations are made with the direct simulation Monte Carlo (DSMC) method of Bird. The focus is on Mach 10 flows about flared axisymmetric configurations, both hollow cylinder flares and double cones. The flow conditions are those for which experiments have been or will be performed in the ONERA R5Ch low-density wind tunnel and the Calspan-University of Buffalo Research Center (CUBRC) Large Energy National Shock (LENS) tunnel. The range of flow conditions, model configurations, and model sizes provides a significant range of shock/shock and shock/boundary layer interactions at low Reynolds number conditions. Results presented will highlight the sensitivity of the calculations to grid resolution, contrast the difference in flow structure for hypersonic cold flows and those of more energetic but still low enthalpy flows, and compare the present results with experimental measurements for surface heating, pressure, and extent of separation.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 1004
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
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Book Description
Author: Paul K. Chang
Publisher: Elsevier
ISBN: 1483181286
Category : Technology & Engineering
Languages : en
Pages : 800
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Book Description
Interdisciplinary and Advanced Topics in Science and Engineering, Volume 3: Separation of Flow presents the problem of the separation of fluid flow. This book provides information covering the fields of basic physical processes, analyses, and experiments concerning flow separation. Organized into 12 chapters, this volume begins with an overview of the flow separation on the body surface as discusses in various classical examples. This text then examines the analytical and experimental results of the laminar boundary layer of steady, two-dimensional flows in the subsonic speed range. Other chapters consider the study of flow separation on the two-dimensional body, flow separation on three-dimensional body shape and particularly on bodies of revolution. This book discusses as well the analytical solutions of the unsteady flow separation. The final chapter deals with the purpose of separation flow control to raise efficiency or to enhance the performance of vehicles and fluid machineries involving various engineering applications. This book is a valuable resource for engineers.
Author: Mostafa Barzegar Gerdroodbary
Publisher: Elsevier
ISBN: 0323972233
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Aerodynamic Heating in Supersonic and Hypersonic Flows: Advanced Techniques for Drag and Aero-heating Reduction explores the pros and cons of different heat reduction techniques on other characteristics of hypersonic vehicles. The book begins with an introduction of flow feature around the forebody of space vehicles and explains the main parameters on drag force and heat production in this region. The text then discusses the impact of severe heat production on the nose of hypervelocity vehicles, different reduction techniques for aerodynamic heating, and current practical applications for forebody shock control devices. Delivers valuable insight for aerospace engineers, postgraduate students, and researchers. Presents computational results of different cooling systems for drag and heat reduction around nose cones Explains mechanisms of drag reduction via mechanical, fluidic, and thermal systems Provides comprehensive details about the aerodynamics of space vehicles and the different shock features in the forebody of super/hypersonic vehicles Describes how numerical simulations are used for the development of the current design of forebody of super/hypersonic vehicles
Author: G. G. Chernyi
Publisher: Academic Press
ISBN: 1483271684
Category : Technology & Engineering
Languages : en
Pages : 277
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Book Description
Introduction to Hypersonic Flow has been made available to the English speaking reader because of its usefulness for those individuals desirous of obtaining an introduction to the subject. Written by an internationally acknowledged expert in the field of hypersonic flow, the book makes available heretofore unpublished Soviet work, as well as published work little known outside the Soviet Union. The author has however made every effort to include, where appropriate. Western references for the work he discusses. Starting with a general introductory chapter on hypersonic aerodynamics and aerodynamic problems, the remainder of the book concentrates on the inviscid, perfect fluid aspects of hypersonic flow, with emphasis on the fundamental concepts and rational methods of calculation. The book is directed to students of aerodynamics and gas dynamics, as well as to scientists and engineers interested in problems of hypersonic flight. The level of approach is such that it should prove particularly useful as an undergraduate and introductory graduate text.
Author: Arnold Polak
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 56
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Book Description
Results of a study of hypersonic-turbulent boundary-layer separation over axisymmetric bodies are presented. Pressure, heat-transfer and flow visualization data were obtained for a cone-cylinder-flare configuration. The experimental data were correlated with a theoretical prediction. (Author).
Author: Frank P. Baltakis
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 62
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Book Description
Oscillating flow about a spiked body in a supersonic stream has been investigated in a wind tunnel at Mach 5 at free-stream unit Reynolds numbers of 2,500,000 to 20,000,000 per foot using fast-response pressure transducers, accelerometers and schlieren movie cameras. A tension-cone-type model with replaceable nosetips of two different lengths and two different surface roughnesses was used.
