AM06-01-002 円柱から発生する空力騒音に対する主流の渦スケールの影響(騒音(1)〜はく離流れと空力騒音〜,一般講演)

概要

論文の詳細を見る
The aim of this investigation is to clarify the effect of turbulence of aerodynamic sound generation. In order to understand effect of turbulence on aerodynamic sound generation, an active turbulence generator for a low-noise wind tunnel was developed. The aerodynamic noise radiated from a circular cylinder placed at large scale turbulent flow field was measured. The aerodynamic noise levels depended on the eddy scale of turbulence. In the case of the scale of turbulence almost the same as the diameter of the cylinder, the interaction between the incoming-flow and the wake of the cylinder became large. As a result, aerodynamic noise from a cylinder becomes small. It revealed that scale of incoming flow play an important role with aerodynamic sound generation.
日本流体力学会の論文
2006-09-05