Abstract
We present a conservative isothermal wall boundary condition treatment for the compressible Navier-Stokes equations. The treatment is based on a manipulation of the Osher solver to predict the pressure and density at the wall, while specifying a zero boundary flux and a fixed temperature. With other solvers, a non-zero mass flux occurs through a wall boundary, which is significant at low resolutions in closed geometries. A simulation of a lid driven cavity flow with a multidomain spectral method illustrates the effect of the new boundary condition treatment.
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Jacobs, G.B., Kopriva, D.A. & Mashayek, F. A Conservative Isothermal Wall Boundary Condition for the Compressible Navier–Stokes Equations. J Sci Comput 30, 177–192 (2007). https://doi.org/10.1007/s10915-005-9040-1
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DOI: https://doi.org/10.1007/s10915-005-9040-1