High-Order Staggered Finite Difference Methods for Maxwell's Equations in Dispersive Media Public Deposited

http://ir.library.oregonstate.edu/concern/technical_reports/g445cd695

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  • We study the stability properties of, and the phase error present in, several higher order (in space) staggered finite difference schemes for Maxwell's equations coupled with a Debye or Lorentz polarization model. We present a novel expansion of the symbol of finite difference approximations, of arbitrary (even) order, of the first order spatial derivative operator. This alternative representation allows the derivation of a concise formula for the numerical dispersion relation for all (even) order schemes applied to each model, including the limiting (infinite order) case. We further derive a closed-form analytical stability condition for these schemes as a function of the order of the method. Using representative numerical values for the physical parameters, we validate the stability criterion while quantifying numerical dissipation. Lastly, we demonstrate the effect that the spatial discretization order, and the corresponding stability constraint, has on the dispersion error.
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  • description.provenance : Approved for entry into archive by Vrushali Bokil(bokilv@math.oregonstate.edu) on 2010-01-05T22:23:56Z (GMT) No. of bitstreams: 1 ORST-MATH-10-01.pdf: 605899 bytes, checksum: 38c93187abdfba9d401e2ffa46d3828d (MD5)
  • description.provenance : Made available in DSpace on 2010-01-05T22:23:56Z (GMT). No. of bitstreams: 1 ORST-MATH-10-01.pdf: 605899 bytes, checksum: 38c93187abdfba9d401e2ffa46d3828d (MD5)
  • description.provenance : Submitted by Vrushali Bokil (bokilv@math.oregonstate.edu) on 2010-01-05T22:22:58Z No. of bitstreams: 1 ORST-MATH-10-01.pdf: 605899 bytes, checksum: 38c93187abdfba9d401e2ffa46d3828d (MD5)

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