EFFICIENT COMPUTATIONS USING UPWIND BIASED SCHEMES |
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Authors: | C DE NICOLA G IACCARINO R TOGNACCINI |
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Abstract: | A new multiblock unfactored implicit upwind scheme for inviscid two-dimensional flow calculations is presented. Spatial discretization is carried out by means of an upwind first-order method; an original extension to higher accuracy is also presented. The integration algorithm is constructed in a ‘δ’ form that provides a direct derivation of the scheme and leads to an efficient computational method. Fast solutions of the linear systems arising at each time step are obtained by means of the bi-conjugate gradient stabilized technique. The computational results for super/hypersonic steady state flows illustrate the efficiency and accuracy of the algorithm. |
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Keywords: | implicit multiblock algorithm upwind scheme local grid refinement |
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