Nonlinear evolution of interacting oblique waves on two-dimensional shear layers
摘要：
The effects of critical layer nonlinearity are considered on spatially growing oblique instability waves on nominally two-dimensional shear layers between parallel streams. The analysis shows that three-dimensional effects cause nonlinearity to occur at much smaller amplitudes than it does in two-dimensional flows. The nonlinear instability wave amplitude is determined by an integro-differential equation with cubic type nonlinearity. The numerical solutions to this equation are worked out and discussed in some detail. The numerical solutions always end in a singularity at a finite downstream distance.
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关键词：
COMPUTATIONAL FLUID DYNAMICS NONLINEAR EVOLUTION EQUATIONS NONLINEARITY OBLIQUE SHOCK WAVES SHEAR LAYERS TWO DIMENSIONAL FLOW ASYMPTOTIC METHODS CRITICAL FLOW PARALLEL FLOW VORTICITY EQUATIONS
DOI：
10.1017/S002211208900251X
被引量：
年份：
1989
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