Investigation of Hypersonic Flow Separation and Its Effects on Aerodynamic Control Characteristics PDF Download
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Author: Douglas Eugene Abbott
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 124
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Book Description
The purpose of the present study is to investigate laminar separation at hypersonic speeds, especially as it affects aerodynamic control characteristcis. Theoretical methods for use with computing machines hae been developed for calculating the pressure distribution due to laminar separation of the free-interaction type upstream and downstream of the separation point. The theories account for effects of Mach number, Reynolds number, wall heating and cooling, and specific heat ratio and show significant effects of all these parameters on separation. An experimental investigation was made of flare-cylinder combination with extensive separation at Mach numbers 4 and 6, Reynolds numbers of 10(3) to 10(4), and for adiabatic and cooled walls. In general, the separation was not of the free-interaction type so that modifications of the theory are required to adapt it to this type of separation. Methods for making such modifications are discussed together with methods for computing hypersonic control characteristics for various cases of seaparated flows.
Author: Douglas Eugene Abbott
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 124
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Book Description
The purpose of the present study is to investigate laminar separation at hypersonic speeds, especially as it affects aerodynamic control characteristcis. Theoretical methods for use with computing machines hae been developed for calculating the pressure distribution due to laminar separation of the free-interaction type upstream and downstream of the separation point. The theories account for effects of Mach number, Reynolds number, wall heating and cooling, and specific heat ratio and show significant effects of all these parameters on separation. An experimental investigation was made of flare-cylinder combination with extensive separation at Mach numbers 4 and 6, Reynolds numbers of 10(3) to 10(4), and for adiabatic and cooled walls. In general, the separation was not of the free-interaction type so that modifications of the theory are required to adapt it to this type of separation. Methods for making such modifications are discussed together with methods for computing hypersonic control characteristics for various cases of seaparated flows.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 402
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Book Description
Author: Bill Harvey
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 60
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 268
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 780
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 484
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 188
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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:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1014
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Book Description
Author: Louis G. Kaufman
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 96
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Book Description
"Pressure and heat transfer data were obtained for hypersonic flows over 40-degree expansion corners and ahead of ramps. Full and partial span ramps, having wedge angles up to 90 degrees, were tested at two locations on a sharp leading edge flat plate, with and without end plates. Pressure data were obtained for [M sub infinity =] 5 for model length Reynolds numbers between 1.1 and 6.6 million. Both pressure and heat transfer data were obtained for [M sub infinity =] 8 for Reynolds numbers between 1.1 and 3.3 million." -- page iii, pt.4.
