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In this tutorial, we study a case of particle laden flows. The purpose is to illustrate some of the complex interactions between the uid fluid phase and a dispersed particle phase using commercially available tools. For this purpose, we study a 2D-periodic double shear layer with disceminated particles as shown bellow:

In the absence of any perturbation, a mixing layer, for instance a Ux = U tanh(y) profile, diffuses under the action of viscosity to the mean value of top and bottom velocities. On the other hand, specially manufactured oscillations in the shearing layers will lead to the evolution of vorticies. These perturbations must satisfy the Orr-Sommerfeld equation, otherwise they are suppressed by viscosity. In this tutorial we provide the initial flow condition containing the Orr-Sommerfeld perturbation in a separate input file.

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