A Two-grid Accelerated Sweeping Preconditioner for the Helmholtz Equation

来源 :第八届工业与应用数学国际大会 | 被引量 : 0次 | 上传用户：Kfreshman

【摘要】

：

　　Helmholtz solvers based on sweeping preconditioners have relatively high per-iteration cost.We reduce this cost by using the sweeping preconditioner at the

【作者】

：

Stolk Chris

【机构】

：

Univ.of Amsterdam

【出处】

：

第八届工业与应用数学国际大会

【发表日期】

：

2015年期

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　　Helmholtz solvers based on sweeping preconditioners have relatively high per-iteration cost.We reduce this cost by using the sweeping preconditioner at the coarse level of a two-grid method,so that it is applied to an eight times smaller problem.

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A Two-grid Accelerated Sweeping Preconditioner for the Helmholtz Equation

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