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굴삭기 냉각시스템 설계 평가를 위한 엔진룸 열유동 해석 검증
이재석(J.S. Lee),서영민(Y.M. Seo),정찬혁(C.H. Jeong),박용갑(Y.G. Park),하만영(M.Y. Ha) 한국전산유체공학회 2019 한국전산유체공학회지 Vol.24 No.2
Basically, excavators perform high-load operation in a fixed place on the construction site and the cooling performance of an excavator is determined by a cooling system consisting of heat exchangers and a single fan which are located inside engine room. Therefore, during development of an excavator, it is really important to stably design the cooling system by estimating the heat sources of the excavator. In this study, CFD analysis of the engine room was carried out on four different types of excavators and the results of each CFD analysis were compared with those of the heat balance test. Based on the cooling performance index, which is defined by using the design reference temperature of each heat exchanger, the analysis error rate is up to approximately 10%. As these results, CFD analysis can be used to virtually evaluate excavator cooling performance and to perform design evaluation and verification of the cooling system.