BHASKARAN, R and SMITH, FT and TIMOSHIN, SN (1995) THE APPEARANCE OF BOUNDARY-LAYER INSTABILITIES AS A VELOCITY MINIMUM DEVELOPS. P ROY SOC LOND A MAT , 451 (1942) 331 - 339.
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A theoretical investigation is described concerning instability modes of relatively high frequency and wavenumber in classical boundary layers with local flow reversal present. Of special concern is the two-dimensional unsteady boundary layer. It is shown that reversed flow sets in first at the wall rather than in the middle of the flow. The modes examined therefore are intermediate between ones previously studied for marginal separation, with a near-wall velocity minimum, and those for an off-wall velocity minimum. The order of appearance of instability modes, as time increases, is found to be marginal modes first, then intermediate modes, then off-wall modes. Comparisons with recent computations are described.
|Title:||THE APPEARANCE OF BOUNDARY-LAYER INSTABILITIES AS A VELOCITY MINIMUM DEVELOPS|
|Keywords:||BREAK-UP, SEPARATION, DOWNSTREAM, FLOW|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Mathematics|
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