A novel vortex generator, termed as “slotted vortex generator,” is proposed in this study. Computations are conducted for supersonic flow at a freestream Mach number of 2.5 past single vortex generators of three different heights. For each device height h , three values of the slot radius r = 0.3 h , 0.4 h , and 0.6 h are used. Comparisons made with a standard wedge-type vortex generator using streamwise-velocity profiles, near-surface streamwise-velocity contours, pitot pressure deficit contours, etc., indicate that the new device has less device drag and produces fuller near-surface streamwise velocities downstream of the device. It is observed that the primary counter-rotating vortex pair formed due to the vortex generator lifts off at a slower rate when a slotted vortex generator is used. Computations of an impinging oblique-shock/boundary-layer interaction at Mach 2.5 for a flow turning angle of 7 deg, with flow control using (separately) an array of slotted and standard vortex generators, indicate that the slotted vortex generators with r / h = 0.6 are most effective in reducing the region with reversed flow when placed closer to the shock/boundary-layer interaction region.


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    Title :

    Novel Vortex Generator for Mitigation of Shock-Induced Flow Separation


    Contributors:

    Published in:

    Publication date :

    2016-07-06


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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