| This article analyzed one-dimensional wave equation of acoustic wave according to the basic equations of ideal fluid.Through the initial conditions and boundary conditions, work out the sound pressure propagation function of the standing wave in tubes.According to the propagation characteristics of acoustic wave in a standing wave tube,come out the conditions of the standing wave formation when the acoustic waves in th tube.On the basis of theories, design smoke generator and standing wave tube experimental system, obtain the migration distribution characteristics of liquid drops in the standing wave by experiment. Understanding the propagation characteristics of the viscous fluid in standing wave tube. Design finite element analysis model of acoustic-solid coupling, Through the LMS virtual.lab finite element analysis of the standing wave tube and the cavity obtain sound pressure distribution characteristics in a standing wave tube in different frequency.Put a rigid particles into the standing wave tube, Find out the coupled acoustic field of the sound wave and the particles and the pressure on the surface of the particles by LMS virtual.lab finite element analysis. |
PDF Full Text Request