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A well-known issue associated with the use of fully conservative schemes inmulticomponent-flow simulations is the generation of spurious pressureoscillations at contact interfaces. These oscillations can rapidly lead tosolver divergence even in the presence of smooth interfaces that are not fullyresolved. In this note, we compare various strategies for reducing suchoscillations that do not (a) introduce conservation error, (b) rely onartificial viscosity or limiting, or (c) degrade order of accuracy in smoothregions of the flow. The considered test case is one-dimensional advection of ahigh-pressure nitrogen/n-dodecane thermal bubble using the thermally perfectgas model. Several results are presented that contradict those corresponding tothe more conventional hydrogen/oxygen thermal-bubble case.

A note on reducing spurious pressure oscillations in fully conservative discontinuous Galerkin simulations of multicomponent flows