title: Acoustic coupling between pistons in a rigid baffle.
abstract: This paper demonstrates the merit of "matched asymptotic expansions" by applying the method to the analysis of the acoustical coupling between vibrating pistons. The accuracy of the method is verified by comparing the results of this study with existing solutions. The method uses the disparity between the characteristic length scale of the nearly incompressible fluid motion near the piston and that of the far field acoustic pressure. The velocity potential in each region is developed in terms of a singular perturbation expansion. Finally, the combination of the locally valid solutions leads to a global solution.
authors.forename: Kassiani
authors.initials: K
authors.lastname: Kotsidou
authors.forename: Charles
authors.initials: C
authors.lastname: Thompson
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D017097:Electric Impedance; D008962:Models, Theoretical; D009791:Oceanography / Q000295:instrumentation*; D011312:Pressure; D014159:Transducers; D014732:Vibration; D014867:Water
chemical_list: D014867:Water