NDLI: Flow establishment in a generic scramjet combustor

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Flow establishment in a generic scramjet combustor

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bittner, R. D. Weidner, E. H. Jacobs, P. A. Rogers, R. C.
Copyright Year	1990
Description	The establishment of a quasi-steady flow in a generic scramjet combustor was studied for the case of a time varying inflow to the combustor. Such transient flow is characteristic of the reflected shock tunnel and expansion tube test facilities. Several numerical simulations of hypervelocity flow through a straight duct combustor with either a side wall step fuel injector or a centrally located strut injector are presented. Comparisons were made between impulsively started but otherwise constant flow conditions (typical of the expansion tube or tailored operations of the reflected shock tunnel) and the relaxing flow produced by the 'undertailored' operations of the reflected shock tunnel. Generally the inviscid flow features, such as the shock pattern and pressure distribution, were unaffected by the time varying inlet conditions and approached steady state in approx. the times indicated by experimental correlations. However, viscous features, such as heat transfer and skin friction, were altered by the relaxing inlet flow conditions.
File Size	1601351
Page Count	46
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910004336
Archival Resource Key	ark:/13960/t2m66dq14
Language	English
Publisher Date	1990-10-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Skin Friction Supersonic Combustion Ramjet Engines Pressure Distribution Computerized Simulation Inlet Flow Unsteady Flow Steady State Ducted Flow Flow Distribution Inviscid Flow Fuel Injection Combustion Chambers Hypervelocity Flow Heat Transfer Shock Tunnels Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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