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- W830650959 abstract "An investigation is conducted on several numerical schemes for use in the computation of two-dimensional, spatially evolving, laminar variable-density compressible shear layers. Schemes with various temporal accuracies and arbitrary spatial accuracy for both inviscid and viscous terms are presented and analyzed. All integration schemes use explicit or compact finite-difference derivative operators. Three classes of schemes are considered: an extension of MacCormack''s original second-order temporally accurate method, a new third-order variant of the schemes proposed by Rusanov and by Kutler, Lomax, and Warming (RKLW), and third- and fourth-order Runge-Kutta schemes. In each scheme, stability and formal accuracy are considered for the interior operators on the convection-diffusion equation Ut + aUx = aUxx. Accuracy is also verified on the nonlinear problem, Ut + Fx = 0. Numerical treatments of various orders of accuracy are chosen and evaluated for asymptotic stability. Formally accurate boundary conditions are derived for several sixth- and eighth-order central-difference schemes. Damping of high wave-number data is accomplished with explicit filters of arbitrary order. Several schemes are used to compute variable-density compressible shear layers, where regions of large gradients exist." @default.
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- W830650959 date "1997-12-01" @default.
- W830650959 modified "2023-09-27" @default.
- W830650959 title "Comparison of Several Numerical Methods for Simulation of Compressible Shear Layers" @default.
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