A new phase-fitted finite difference method for the 1D Helmholtz equation that is exact for plane waves and achieves second-order convergence uniform in wavenumber under fixed-resolution conditions.
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A Bernoulli phase-fitted finite difference method and wavenumber-explicit analysis for the one-dimensional Helmholtz equation
A new phase-fitted finite difference method for the 1D Helmholtz equation that is exact for plane waves and achieves second-order convergence uniform in wavenumber under fixed-resolution conditions.