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Final Contractor Report

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National Aeronautics and Space Administration

Washington, DC 20546–0001

Available electronically at http://gltrs.grc.nasa.gov

July 1986

NASA CR–3997

E–None

WU–None

NAG3–549

100

Lateral Jet Injection Into Typical Combustor Flowfields

David G. Lilley

Swirling flow; Lateral jets; Jets in crossflow

Unclassified -Unlimited

Subject Category: 07

Oklahoma State University

School of Mechanical and Aerospace Engineering

Stillwater, Oklahoma 74078

A05

Final report. Project Manager, James D. Holdeman, Internal Fluid Mechanics Division, NASA Lewis Research Center, Cleveland, Ohio 44135.

Appendix A–Lateral Jet Injection Into Typical Combustor Flowfields by G.B. Ferrell, M.T. Abujelala, A.A. Busnaina, and D.G. Lilley; Appendix B–

Flow Visualization of Lateral Jet Injection Into Swirling Crossflow by G.B. Ferrell, K. Aoki, and D.G. Lilley; Appendix C–Turbulence Measurements of

Lateral Jet Injection Into Confined Tubular Crossflow by G.B. Ferrell and D.G. Lilley; Appendix D–Hot-Wire Measurements of a Single Lateral Jet

Injected Into Swirling Crossflow by L.H. Ong, C.B. McMurry, and D.G. Lilley; Appendix E–Two Opposed Lateral Jets Injected Into Swirling

Crossflow by C.B. McMurry, L.H. Ong, and D.G. Lilley; and Appendix F–Multispark Flow Visualization of Lateral Jet Injection Into a Swirling

Crossflow by G.B. Ferrell, K. Aoki, and D.G. Lilley.

This is the Final Report on Grant NAG 3–549 and discussion is on those activities undertaken during the entire 1-yr

research program which began May 1, 1984 and ended April 30, 1985 with no-cost time extension to January 31, 1986.

Studies were concerned with the experimental problem of lateral jet injection into typical combustor flowflelds in the

absence of combustion. All flowfields being investigated have no expansion of the crossflow (the test section to swirler

diameter ratio D/d = 1), after its passage through an optional swirler (with swirl vane angle φ = 0 (swirler removed), 45°

and 70°). The lateral jet(s) is(are) located one test-section diameter downstream of the test-section inlet (x/D = 1). The

lateral jets have round-sectioned nozzles, each of which has an area of 1/100th of the cross-sectional area of the crossflow

(Aj/Ac = 1/100). Jet-to-crossflow velocity ratios of R = vj/uo = 2, 4, and 6 were investigated. Helium-bubble flow visualization, five-hole pitot probe time-mean velocity measurements, and single-wire time-mean velocity and normal and shear

stress turbulence data were obtained in the research program.