유체-구조간 결합을 고려한 진동-음향 모델의 축소

Abstract

We introduce a strongly coupled model reduction method recently developed for well-known vibro-acoustic interaction, which is a standard formulation. The key principle of the scheme is a sequential reduction process from the structure to fluid domains. The sequential projection allows for a strong connection between two different physical domains, unlike conventional schemes that reduce two domains at once, and then better accuracy of the resulting reduced model can be expected. In this study, we compared the performance of the strongly coupled method of the formulation to the conventional uncoupled and weakly coupled methods. We herein considered frequency domain analysis and transient analysis. In addition, we investigated the symmetric formulation and its condensation techniques.