3차원 다영역 공간의 소음해석을 위한 파워흐름경계요소법 개발
Development of Power Flow Boundary Element Method for 3-dimensional Multi-domain Noise Analysis
김종도(서울대학교 대학원); 홍석윤(서울대학교); 송지훈(전남대학교)
21권 10호, 967~974쪽
초록
The direct and indirect PFBEM(power flow boundary element method) for the treatment of the 3dimensional multi-domain problems are proposed to predict the acoustic energy density in medium to high frequency ranges. In the proposed method, the equation is derived in a matrix form by considering coupled relationships of the power flow at the interface of given domains. The proposed method can successfully obtain the analytical solutions for the problems of coupled cubes and the small-scale reverberant chamber. Then the experiment is carried out to obtain STL(sound transmission loss) by using small-scale reverberant chamber and the results are compared with analysis results.
Abstract
The direct and indirect PFBEM(power flow boundary element method) for the treatment of the 3dimensional multi-domain problems are proposed to predict the acoustic energy density in medium to high frequency ranges. In the proposed method, the equation is derived in a matrix form by considering coupled relationships of the power flow at the interface of given domains. The proposed method can successfully obtain the analytical solutions for the problems of coupled cubes and the small-scale reverberant chamber. Then the experiment is carried out to obtain STL(sound transmission loss) by using small-scale reverberant chamber and the results are compared with analysis results.
- 발행기관:
- 한국소음진동공학회
- 분류:
- 기계공학