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Erschienen in:
2003 | OriginalPaper | Buchkapitel
The Use of Nonlinear Solitary Waves for Computing Short Wave Equation Pulses
verfasst von : John Steinhoff, Meng Fan, Lesong Wang, Min Xiao
Erschienen in: Mathematical and Numerical Aspects of Wave Propagation WAVES 2003
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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There are many important problems where thin, concentrated pulses must be numerically convected over long distances. Examples include acoustic and EM pulses scattered or produced by aircraft, rotorcraft and submarines. Often, for these cases, the main interest is in the far field, where the integrated energy at each point along the pulse surface and the motion of the centroid surface are important, rather than the details of the internal pulse structure. Within this scope, there have been many efforts to discretize and solve the time dependent wave equations. The application of these, however, has been limited by the requirement that a sufficient number of grid cells must span the pulse thickness to accurately solve the equations.