Abstract

The Reflected Wave Caused by Acoustic Pulses

A.A.Perelomova (Faculty of Applied Physics and Mathematics, The Technical University of Gdansk, Gdansk, Poland.)

e-mail: anpe@mif.pg.gda.pl

The projecting of the overall wave perturbation into specific components allows one to conider the nonlinear flow caused by any sources including non-isentropic and non-periodic ones. The method leads to an algorythmic procedure to define all possible types of motion in a concrete problem and to get the evolution equations accounting the modes interactions. As it is shown, these equations may be approximately solved due to the suitable initial/boundary conditions. Also, more exact evolution equations may be consequently derived. Since the non-periodic flows may be treated, a problem of the reflected wave caused by an acoustic plane pulse is considered in the framework of the present approach.

Section : 1