Approximate analysis of free-mixing flows

A FREQUENT problem in laser cavity flows, airfoil aerodynamics, and similar two-dimensional fluid problems is the mixing of two identical uniform, compressible streams past a sharp trailing edge (TE) of a partition, on one side of which the laminar boundary layer is thicker than it is on the other. Since the streams are identical, this configuration resembles an ordinary two-dimensional wake; however, the disparity in the boundary-layer thicknesses is bound to introduce asymmetries in the flow, especially beyond but near the trailing edge. The distance beyond the latter over which such asymmetries persist is of significance, especially if no restrictions are placed on the flow Mach number M e and the temperature ratio T w /T oe of the solid partition relative to the stagnation temperature of the stream. This Note aims at presenting formulas valid for such an asymmetric wake for any M e and T w /T oe and any degree of asymmetry introduced via the ratio P=6 } /6 2 , where 0 is the boundary-layer momentum thickness at the trailing edge and subscripts 7 and 2 refer to the two sides of the partition.

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Approximate analysis of free-mixing flows

Cited by 5 publications

References 10 publications

Stochastic model for turbulent, reacting wakes.

Stochastic model for turbulent, reacting wakes.

A theoretical and experimental investigation of the compressible laminar wake behind a long slender cylinder.

The two-dimensional laminar wake with initial asymmetry

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