Abstract
The incompressible plane mixing layer has been investigated using a full simulation of the two-dimensional Navier-Stokes equations, with no turbulence model. The code solves the spatially-developing mixing layer and simultaneous solution of a passive scalar field allows the entrainment process to be examined in detail. Results from two simulations are presented. The first investigates the effect of the wake shed from the splitter plate on the development of the forced mixing layer. This effect appears to be responsible for the large initial asymmetry of entrainment which has been observed experimentally. In the second simulation the forcing is modified by adding a random-walk to the phase of the forcing eigenfunctions, in an attempt to simulate a more ‘natural’ mixing layer. Passive scalar probability density functions for each simulation show asymmetric entrainment of unmixed fluid and the existence of a preferred mixture fraction across the layer.
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© 1989 Springer-Verlag Berlin Heidelberg
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Sandham, N.D., Reynolds, W.C. (1989). Some Inlet-Plane Effects on the Numerically Simulated Spatially-Developing Mixing Layer. In: André, JC., Cousteix, J., Durst, F., Launder, B.E., Schmidt, F.W., Whitelaw, J.H. (eds) Turbulent Shear Flows 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73948-4_33
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DOI: https://doi.org/10.1007/978-3-642-73948-4_33
Publisher Name: Springer, Berlin, Heidelberg
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