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강정환(Junghwan Kang),변성준(Sungjun Byun),최기수(Kisoo Choi),김주호(Jooho Kim),김성재(Seongjae Kim),김인동(Indong Kim) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
The HVAC flow noise of an excavator is important to reduce cabin noise. To analysis the HVAC noise of a cabin, the CFD/CAA of HVAC model was solved at the same time using PowerFLOW. And the test bench of HVAC system was developed to correlate this analysis result. After validation, noise source strength and path were analyzed and dominant design factors influencing noise were found. Using these results, noise reduction was performed to change some duct design parameters.