- 收稿日期: 2018-03-05
- 录用日期: 2018-06-16
2D Acoustic Analysis Based on Exact GeometricBoundary Element Method
- Received Date: 2018-03-05
- Accepted Date: 2018-06-16
Abstract: Boundary Element Method is an important technique to deal with acoustic issue where the domain extends to infinity. The geometric error will be eliminated, owing to the real geometric boundaries introduced into the basic function. Based on the theory of exact geometric analysis, the real geometric boundaries are considered, the error created by meshing is decreased, and a new boundary integral equation is introduced. The method of Cauchy principle value integrals and Hadamard finitepart integral are used to solve the problem of singular term integrals. Besides, nonunique solution caused by fictitious frequency is circumvented through the BurtonMiller method. Numerical examples are presented to show that the method considering the exact geometric boundary has a good accuracy.