A three-dimensional parabolic equation model of sound propagation using higher-order operator splitting and Padé approximants.

نویسندگان

  • Ying-Tsong Lin
  • Jon M Collis
  • Timothy F Duda
چکیده

An alternating direction implicit (ADI) three-dimensional fluid parabolic equation solution method with enhanced accuracy is presented. The method uses a square-root Helmholtz operator splitting algorithm that retains cross-multiplied operator terms that have been previously neglected. With these higher-order cross terms, the valid angular range of the parabolic equation solution is improved. The method is tested for accuracy against an image solution in an idealized wedge problem. Computational efficiency improvements resulting from the ADI discretization are also discussed.

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عنوان ژورنال:
  • The Journal of the Acoustical Society of America

دوره 132 5  شماره 

صفحات  -

تاریخ انتشار 2012