Abstract
A spatial stability analysis is performed to determine the effect of wall placement on instability waves in confined supersonic shear layers. It is shown that the growth rates of Kelvin-Helmholtz instability waves are independent of wall height. However, supersonic instability waves are found to exhibit peaks and valleys in their growth rate curve as a result of the reinforcement and cancellation of the reflected Mach waves at the shear layer. Finally, it is shown how the instability growth rates in a ducted shear layer may be maximized by the proper choice of the duct width to height ratio.
Original language | English (US) |
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Pages (from-to) | 356-358 |
Number of pages | 3 |
Journal | Physics of Fluids A |
Volume | 3 |
Issue number | 2 |
DOIs | |
State | Published - 1991 |
All Science Journal Classification (ASJC) codes
- Engineering(all)