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- W2914031574 abstract "We investigate the effect of aliasing when applied to the storage of variables, and their reconstruction for the solution of conservation equations. In particular, we investigate the effect on the error of storing primitives versus conserved variables for the Navier-Stokes equations. It was found that storing the conserved variables introduces less dissipation and that the dissipation caused by constructing the conversed variable from the primitives grows factorially with the order. Hence, this problem becomes increasingly important with the continuing move towards higher orders. Furthermore, the method of gradient calculation is investigated, as applied to the viscous fluxes in the Navier-Stokes equations. It was found that in most cases the difference was small, and that the product rule applied to the gradients of the conserved variables should be used due to a lower operation count. Finally, working precision is investigated and found to have a minimal impact on free-stream-turbulence-like flows when the compressible equations are solved, except at low Mach numbers." @default.
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- W2914031574 date "2019-01-25" @default.
- W2914031574 modified "2023-09-27" @default.
- W2914031574 title "All Equalities Are Equal, but Some Are More Equal Than Others: The Effect of Implementation Aliasing on the Numerical Solution to Conservation Equations" @default.
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