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Brinkman Penalization 기법을 이용한 삼차원 공력소음 해석
조용우(Y.W. Jo),김호연(H.Y. Kim),배익현(I.H. Bai),문영준(Y.J. Moon) 한국전산유체공학회 2011 한국전산유체공학회 학술대회논문집 Vol.2011 No.11
To resolve aerodynamic noise problem with complex three-dimensional geometry, measures must be taken to ease the complexity involved in numerical analysis. The flow field using moving-unstructured grid was interfaced to structured acoustic grid. To represent moving solid body, Brinkman coefficient is used to map solid into acoustic domain. Different values for permeability are used respectively to distinguish the solid and flow region. calculated simultaneously. The acoustic field is computed using the linearized compressible perturbed equations (LPCE) based on variable decompositions into incompressible and perturbed compressible component. The method used in this study can be applied to problems such as axial-flow fan noise and Blue-ray laser disc noise.