Schwarz type preconditioners for the neutron diffusion equation
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- 作者：A. Vidal-Ferrà ; ndiza ; anvifer2@upv.es" class="auth_mail" title="E-mail the corresponding author ; S. Gonzá ; lez-Pintorb ; sebastian.gonzalez-pintor@chalmers.se" class="auth_mail" title="E-mail the corresponding author ; D. Ginestard ; dginesta@mat.upv.es" class="auth_mail" title="E-mail the corresponding author ; G. Verdú ; a ; gverdu@iqn.upv.es" class="auth_mail" title="E-mail the corresponding author ; C. Demaziè ; rec ; demaz@chalmers.se" class="auth_mail" title="E-mail the corresponding author
- 关键词：Neutron diffusion ; Finite element method ; Substructuring ; Schwarz preconditioner
- 刊名：Journal of Computational and Applied Mathematics
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：309
- 期：Complete
- 页码：563-574
- 全文大小：916 K
文摘
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To solve the neutron diffusion equation many linear systems has to be solved using preconditioned Krylov methods.
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Traditional preconditioners based on incomplete factorizations are expensive in terms of memory.
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Domain decomposition preconditioners are studied including substructuring preconditioners and additive Schwarz preconditioners.
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2D and 3D benchmarks have been studied obtaining better performance results than usual preconditioners.