Experiments on Two Opposed Lateral Jets Injected Into Swirling Crossflow

Experiments on Two Opposed Lateral Jets Injected Into Swirling Crossflow

Microform - 1986
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"Experiments have been conducted to obtain the time-mean and turbulent quantities of opposed lateral jets in a low speed, nonreacting flowfield. A jet-to-crossflow velocity ratio of R = v sub J u sub 0 = 4 was used throughout the experiments, with swirl vane angles of d = 0 (swirler removed), 45 and 70 deg used with the crossflow. Flow visualization techniques used were neutrally-buoyant helium-filled soap bubbles and multispark photography in order to obtain the gross flowfield characteristics. Measurements of time-mean and turbulent quantities were obtained utilizing a six-orientation single hot-wire technique. For the nonswirling case, the jets were found not to penetrate past the test-section centerline, in contrast to the single lateral jet with the same jet-to-crossflow velocity ratio. In the swirling cases, the crossflow remains in a narrow region near the wall of the test section. The opposed jets are swept from their vertical courses into spiral trajectories close to the confining walls. Extensive results are presented in r-x plane plots."--NTIS abstract.
Publisher: Cleveland, Ohio : Lewis Research Center, [National Aeronautics and Space Administration] ; Stillwater, Okla. : Oklahoma State University, School of Mechanical and Aerospace Engineering, [1986]
Characteristics: 1 microfiche (iii, 112 pages) : negative, illustrations ; 11 x 15 cm.


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