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New Preconditioners with Two Variable Relaxation Parameters for the Discretized Time-Harmonic Maxwell Equations in Mixed Form

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  • Yuping Zeng
  • Chenliang Li

Abstract

We provide new preconditioners with two variable relaxation parameters for the saddle point linear systems arising from finite element discretization of time-harmonic Maxwell equations in mixed form. The new preconditioners are of block-triangular forms and Schur complement-free. They are extensions of the results in Cheng et al., 2009, Grief and Schötzau, 2007, and Huang et al., 2009. Theoretical analysis shows that all eigenvalues of the preconditioned matrices are tightly clustered, and numerical tests confirm our analysis.

Suggested Citation

  • Yuping Zeng & Chenliang Li, 2012. "New Preconditioners with Two Variable Relaxation Parameters for the Discretized Time-Harmonic Maxwell Equations in Mixed Form," Mathematical Problems in Engineering, Hindawi, vol. 2012, pages 1-13, August.
    • Handle: RePEc:hin:jnlmpe:617390
    DOI: 10.1155/2012/617390
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