INVISCID DYNAMICS OF 2-DIMENSIONAL SHEAR LAYERS

The dynamics of unconfined, spatially developing shear layers is studi ed through the numerical solutions of the time-dependent Euler equatio ns using a second-order Godunov scheme. The effects of density and vel ocity variations between the two streams of the shear layer are studie d and color graphics are used to show more clearly the entrainment pro cess of the surrounding streams. The calculations demonstrate that the evolution of the mean flow is dominated by two-dimensional, inviscid effects. The r.m.s. fluctuating velocity and density profiles are in g ood agreement with the measurements of Oster and Wygnanski and of Konr ad,except for the peak value of the v' profile.