Govindarajan, Rama and Narasimha, R (1993) Stability of spatially developing boundary layers. Technical Report. National Aeronautical Laboratory, Bangalore, India.
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Abstract
A new formulation of the stability of boundary layer flows in pressure gradients is presented, taking into account the spatial development of the flow . The formulation assumes that disturbance wavelength and eigenfunction vary downstream no more rapidly than the boundary layer ,13; thickness, and includes all terms of 0..(1). and O (R-1) in the boundary layer Reynolds numbs= R . Although containing the Q.rr-amp;ommerfeld operator, -the present approach does not yield the Qrr-Scn erf eld equation in any rational limit, InBlasius flow, the present stability equation is consistent with tthat of Bertolotti et al . (1992) to terms of Q(R- ).For the Falkner-Skan similarity solutions neutral boundaries are computed without the necessity of having to march in space . . Results show that the effects of spatial growth are striking in flows subjected to adverse pressure gradients .
| Item Type: | Monograph (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Boundary layer stability;Non-parallel effects |
| Subjects: | ENGINEERING > Fluid Mechanics and Thermodynamics |
| Depositing User: | Mr. N A |
| Date Deposited: | 27 Jun 2006 |
| Last Modified: | 24 May 2010 04:12 |
| URI: | http://nal-ir.nal.res.in/id/eprint/1588 |
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