Study of Fluid Flow on a Flat Plate with Multiple Rectangular Impinging Slot Jets
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2014 by IJETT Journal|
|Year of Publication : 2014|
|Authors : Malladi R.Ch. Sastry , B. V. S. S. S. Prasad , A.V.S.S.K.S Gupta
Malladi R.Ch. Sastry , B. V. S. S. S. Prasad , A.V.S.S.K.S Gupta. "Study of Fluid Flow on a Flat Plate with Multiple Rectangular Impinging Slot Jets ", International Journal of Engineering Trends and Technology (IJETT), V13(2),86-92 July 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Computational and experimental studies on a flat plate are conducted by an array of five rectangular air jets impinging on its top surface. The array jet consists of a central jet surrounded by four neighboring perimeter jets. Computations are carried out by Shear Stress Transport (SST) ?-? turbulence model. The jet-to-plate spacing (H) to hydraulic diameter of slot (D) ratio is varied from 0.5 to 4 and jet Reynolds number is varied from 5282 to 8450. The computationally obtained flow structure reveals the complex interaction of the wall jets. Primary pressure peaks are observed at the stagnation point and the secondary peaks are noticed at the interaction points of the wall jets. Position of the secondary peaks depends upon H/D and is independent of Reynolds number, whereas the size of the peak depends upon both H/D and Reynolds number.
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Jet impingement, array jet, flow visualization, Experiments, CFD