An application of the surface variational principle for interior noise prediction

The Surface Variational Principle (SVP) has been already applied for several acoustic domains in order to determine exterior radiated and scattered acoustic pressure. The goal of the activities documented in this paper is to demonstrate the applicability of the SVP for the evaluation of interior acoustic domains, In order to fulfil the research target, an acoustic cylinder cavity was selected as a test article. The following considerations led to this choice: 1) Either the structural or the acoustic domain can be solved with an analytical formulation, hence, these analytical solutions will represent references for comparing the results obtained by the SVP; 2) The axysimmetric domain represents a very interesting problem in several engineering applications; 3) The SVP application to a cylindrical domain can be easily extended to more complex axysimmetric domains. Hence, the convergence of SVP results is discussed herein with reference to a well-known analytical problem.