減音効果と通気性を考慮した消音ダクトの形状最適化に関する検討

抄録

The main topic of this study is a shape design of a noise eliminating duct. In order to enhance the noise muffling performance of an eliminating duct, jumps in the cross-section or bends are adapted to the duct. However, jumps in the cross-section or bends interrupt the flow of wind and impair air permeability. Thus, the noise muffling performance and ventilation performance of a noise eliminating are related to the trade-off. In order to realize a duct with high muffling capability and high ventilation performance, the shape optimization method using multi-objective genetic algorithm (MOGA) is used to decide optimal shape of the eliminating duct in this study.