Multioperator representation of composite compact schemes

Pleiades Publishing Ltd - Tập 54 Số 10 - Trang 1522-1535 - 2014
Savel’ev, A. D.1
1Dorodnicyn Computing Center, Russian Academy of Sciences, Moscow, Russia

Tóm tắt

The multioperator approach is used to obtain high-order accurate compact differences. These differences are developed to describe convective terms of differential equations, as well as mixed derivatives, source terms, and the coefficients of metric derivatives of coordinate transformations. The same principles are used to obtain high-order compact differences for representing diffusion terms. These differences underlie multioperator composite compact schemes, which are used to compute the flow past an airfoil by integrating the nonstationary Navier-Stokes equations supplemented with the equations of a turbulent viscosity model.

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