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- W2109869533 abstract "Explicit time differencing methods for solving differential equations are advantageous in that they are easy to implement on a computer and are intrinsically very parallel. The disadvantage of explicit methods is the severe restrictions that are placed on stable time-step intervals. Stability bounds for explicit time differencing methods on advective–diffusive problems are generally determined by the diffusive part of the problem. These bounds are very small and implicit methods are used instead. The linear systems arising from these implicit methods are generally solved by iterative methods. In this article we develop a methodology for increasing the stability bounds of standard explicit finite differencing methods by combining explicit methods, implicit methods, and iterative methods in a novel way to generate new time-difference schemes, called preconditioned time-difference methods. A Jacobi preconditioned time differencing method is defined and analyzed for both diffusion and advection–diffusion equations. Several computational examples of both linear and nonlinear advective-diffusive problems are solved to demonstrate the accuracy and improved stability limits. © 1995 John Wiley & Sons, Inc." @default.
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- W2109869533 date "1995-07-01" @default.
- W2109869533 modified "2023-09-27" @default.
- W2109869533 title "Expanding stability regions of explicit advective-diffusive finite difference methods by Jacobi preconditioning" @default.
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- W2109869533 doi "https://doi.org/10.1002/num.1690110404" @default.
- W2109869533 hasPublicationYear "1995" @default.
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