Spreading of Nonuniform Jets in Wind

[+] Author and Article Information
S. Bhattacharyya

Department of Mathematics, Indian Institute of Technology, Kharagpur, 721302, West Bengal, India

F. T. Smith

Mathematics Department, University College London, Gower Street, London, WC1E 6BT, U.K.

J. Fluids Eng 124(3), 694-699 (Aug 19, 2002) (6 pages) doi:10.1115/1.1478063 History: Received March 29, 2001; Revised January 14, 2002; Online August 19, 2002
Copyright © 2002 by ASME
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Sketch of basic configuration for slender rotating-blade and similar motions: (a) local view near origin, where 3D hover details have effect; (b) outer problem addressed in present study, with jets of width εG2 emerging outboard (non-uniform sheet-jets (2c) in a stream). (c) Gridsize effect on horizontal velocity along symmetry line: solid curve, grid 0.005×0.005; dots, 0.001×0.001; crosses, 0.01×0.01.
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Plots of computed streamlines for case L=1. Reynolds number is (a) 50, (b) 100, (c) 130.
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For the case L=1: (a) vorticity contours at Re=100; (b) centerline velocity versus x, for various Re, upstream and downstream of source; (c) velocity vectors at Re=130
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For case L=2: (a) streamlines at Re=50; (b), (c) velocity vectors at Re=30, 50
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The case L=3, showing (a, b) streamlines for Re=20, 30, and (c, d) velocity vectors for Re=20, 30




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