In this study, the noise reduction effect of the steam vent silencer was investigated by performing a transient flow analysis applying the Loss Model, a porous flow analysis model, and calculating the noise intensity from the pressure fluctuation according to the time change. As a result of flow analysis, it was confirmed that the noise intensity decreased as the number of diffusers and the number of splitters made of foamed aluminum increased. In the case of three-stage diffusers, the noise intensity decreased by up to 33.4 dB when six foamed aluminum with a thickness of 150mm were installed.

• 김나용(경상국립대학교) | Na-Yong Kim
• 정원훈(경상국립대) | Won-hoon Jung
• 김봉환(경상국립대학교) | Bonghwan Kim Corresponding author