Tunnel flow breakdown from inclined jets

Title

Tunnel flow breakdown from inclined jets

 Author

Tyler, R.A.
Williamson, R.G.

Institution

National Research Council Canada, Division of Mechanical Engineering, Gas Dynamics Section

 Date

1971-03-31

 Abstract

Inclined single and paired jets were operated through the regime of floor vortex formation in the NRC 10-ft x 20-ft V/STOL propulsion tunnel. Observed floor stagnation positions are correlated in terms of a jet force coefficient. Limiting conditions for vortex formation (incipient stagnation) are derived for a wide range of jet inclination to the vertical. The observations are discussed in relation to limited existing information on tunnel flow breakdown with models involving vertical jets, and used to infer the influence of jet inclination on testing limits. Correlated results for the single jet and tandem jet-pair were generally similar, at the same total nozzle area.

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 Publisher

National Research Council Canada

 Access restriction

Campus only

 Source

National Research Council Aeronautical Report LR 545

 Part of collection

Aerospace Engineering Reports

 Document type

report

 Rights

(c)1971 National Research Council Canada
Files
PDF LR-545.pdf 15.44 MB
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