Nested Schur-Complement Solver for a Low-Mach Number Model: Application to a Cyclone-Cyclone Interaction
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URN:
http://nbn-resolving.de/urn:nbn:de:bsz:16-emclpp-566532 (PDF (English))
Abstract
Forecasting the dynamical evolution of interacting tropical cyclones poses a computationally challenging problem. An attractive approach for modeling and simulating such type of dynamics is given by Low-mach models. A formulation of a Low-mach model is presented along with the description of a benchmark scenario of two interacting tropical cyclones. For the discrete nonlinear equations of this model, an improved variant of the nested Schur-complement preconditioner is proposed. A detailed discussion of the numerical results is conducted with a special emphasis on computational costs and scalability. It will be demonstrated that the new preconditioner clearly outperforms a prior version of this kind of preconditioner with respect to computing time by a factor of two, but at the cost of a slightly reduced scalability.Statistiken
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Veröffentlicht
2018-11-14
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en