There are many disadvantages to existing silencers used in power plants. Recently, high-performance silencers are required in society, so it is necessary to develop silencers accordingly. Therefore, in this study, to develop the flow silencer by taking advantage of the foamed aluminum, the property values such as loss coefficient and porosity were obtained through experiments, based on the Forchheimer's law. CFD analysis was performed by applying a porous modeling technique to foamed aluminum and the results were compared with experimental values. The error rate between the results of the experiment and the flow analysis is within about 2.79%, so the results of the experiment and the analysis agree relatively well. When the foamed aluminum was installed, the flow noise was reduced by about 5.14dB.

ABSTRACT
1. 서 론
2. 다공체 압력강하 이론식
3. 발포알루미늄 압력강하 실험
    3.1 실험장치 및 방법
    3.2 실험 결과 고찰
4. 발포알루미늄 CFD 해석
    4.1 유동해석 모델
    4.2 격자생성 및 경계조건
    4.3 CFD 해석 결과 및 실험결과비교
5. 유동해석을 통한 소음강도 계산
6. 결 론
References

• 김나용(경남과학기술대학교 일반대학원 자동차공학과) | Na-Yong Kim
• 김봉환(경남과학기술대학교) | Bonghwan Kim 교신