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- W2040656227 abstract "In order to develop numerical schemes for stiff problems, a model of relaxing heat flow is studied. To isolate those errors unavoidably associated with discretization, a method of characteristics is developed, containing three free parameters depending on the stiffness ratio. It is shown that such 'decoupled' schemes do not take into account the interaction between the wave families, and hence result in incorrect wavespeeds. Schemes can differ by up to two orders of magnitude in their rms errors, even while maintaining second-order accuracy. 'Coupled' schemes which account for the interactions are developed to obtain two additional free parameters. Numerical results are given for several decoupled and coupled schemes." @default.
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- W2040656227 date "1991-06-24" @default.
- W2040656227 modified "2023-09-22" @default.
- W2040656227 title "Design of algorithms for a dispersive hyperbolic problem" @default.
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- W2040656227 doi "https://doi.org/10.2514/6.1991-1535" @default.
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