P. A. Bakhvalov, “Specification of a wave packet using initial data in a round cylindric channel for linear acoustic problems”, Keldysh Institute preprints, 2016,079, 23 pp.

Specification of a wave packet using initial data in a round cylindric channel for linear acoustic problems

P. A. Bakhvalov

Abstract: We discuss how to prescribe a wave packet in a round cylindric channel as an initial data. We consider non-zero azimuthal or radial wave numbers. Parameters of the wave packet are chosen for convenience in numerical simulaition. Explicit expressions for initial data and pressure spectrum are presented.

Keywords: channel with flow, sound field, initial conditions, spectrum.

DOI: 10.20948/prepr-2016-79