재생형 블로워에서 발생하는 비정상 유동과 유동 소음 특성에 관한 연구

다국어 초록 (Multilingual Abstract)

This paper shows the characteristics of the unsteady flow field and aeroacoustic noise of a regenerative blower. Three-dimensional Navier-Stokes equations were applied as a numerical solution to analyze the unsteady flow field with static pressure fluctuation on the impeller and an the casing. For computational study, it was predicted that the upper part of outlet region and the tips of blades are dominant aeroacoustic noise sources in the regenerative blower. The measurement data of sound camera indicates that the dominant noise source of the regenerative blower appears in the outlet region. In this study, the position of noise source and the characteristic of noise by using numerical solution were predicted and validated through comparison between experimental data and computational ones. It is represented as fundamental data which are able to be used to reduce the noise in a regenerative blower.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. CFD 수치해석
• 3. 소음원 측정
• 4. 결론
• 참고문헌