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The Numerical Simulation of Radiative Shocks. I: The elimination of numerical shock instabilities using a localized oscillation filter

Sutherland, Ralph S; Bisset, David K; Bicknell, Geoffrey V


We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure, density and temperature are produced that are exacerbated by thermal instability when cooling is present, forming post–shock ‘stripes’. These are orthogonal to the classic post–shock ’ringing’ fluctuations. The resulting post–shock ‘striping’ substantially modifies the flow. We discuss three different methods...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article


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