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) |
|---|---|
| Pages (from-to) | 356-358 |
| Number of pages | 3 |
| Journal | Physics of Fluids A |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 1991 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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The effect of walls on instability waves in supersonic shear layers. / Morris, Philip John; Giridharan, M. G.
In: Physics of Fluids A, Vol. 3, No. 2, 01.01.1991, p. 356-358.Research output: Contribution to journal › Article
TY - JOUR
T1 - The effect of walls on instability waves in supersonic shear layers
AU - Morris, Philip John
AU - Giridharan, M. G.
PY - 1991/1/1
Y1 - 1991/1/1
N2 - 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.
AB - 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.
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U2 - 10.1063/1.858145
DO - 10.1063/1.858145
M3 - Article
VL - 3
SP - 356
EP - 358
JO - Physics of fluids. A, Fluid dynamics
JF - Physics of fluids. A, Fluid dynamics
SN - 0899-8213
IS - 2
ER -