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- W2372091736 abstract "GRAPES is a non-hydrostatic grid model developed by Chinese Academy of Meteorological Sciences,which is based on the full-compressible motion equations for atmosphere,and exploits the semi-implicit semi-Lagrange scheme.During the integration,a 3D Helmholtz equation should be solved at each time step.The time required to solve this kind of equation is about 70% of the whole time elapsed.To speedup the solution process,it is no way but to exploit high efficient preconditioning techniques.In the paper,there applies the so-called multi-rows dual-threshold incomplete factorization and some widely used preconditiong techniques,and two types of parallelization techniques,that is the classic additive Schwarz and the so-called factors-combination based technique.The numerical results show that multi-row dual-threshold incomplete factorization is superior to the other tested preconditioning techniques including the widely used ILUT.In addition,the classic additive Schwarz is slightly better than the factors-combination based technique." @default.
- W2372091736 created "2016-06-24" @default.
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- W2372091736 date "2011-01-01" @default.
- W2372091736 modified "2023-09-26" @default.
- W2372091736 title "Study on preconditioning techniques for non-hydrostatic model GRAPES" @default.
- W2372091736 hasPublicationYear "2011" @default.
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