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Numerical analysis and design optimization of engine room to improve cooling performance for a mid-class excavator

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Abstract

Excavators perform high-load operations in mainly a fixed place, and the heat balance is determined by the performance of the cooling system. Prediction of the cooling system performance is difficult due to non-uniformity of the air flow field inside the engine room and complicated boundary conditions. In the present study, CFD analysis of the engine room was performed for a preliminary evaluation of the cooling system performance of an excavator, and the analysis technique was validated by comparison with heat balance test results for an actual vehicle. CFD analysis was performed according to the design of experiment method for three types of internal design variables and two types of external design variables. A sensitivity analysis of the engine room design variables was performed and a regression model for the major design variables was proposed. Based on the regression model, optimization was conducted for the engine room layout for performance improvement.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2017R1A2B3004883).

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Authors and Affiliations

  1. Hyundai Construction Equipment, 55, Bun Dang-Ro, Bun Dang Gu, Seong Nam, 13591, Korea

    Jae Seok Lee, Chan Hyeok Jeong & Min Seok Kim

  2. Rolls-Royce and Pusan National University Technology Centre, Jang Jeon 2-Dong, Geum Jeong Gu, Busan, 46241, Korea

    Young Min Seo & Yong Gap Park

  3. School of Mechanical Engineering, Pusan National University, Jang Jeon 2-Dong, Geum Jeong Gu, Busan, 46241, Korea

    Man Yeong Ha

Authors
  1. Jae Seok Lee
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  2. Young Min Seo
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  3. Chan Hyeok Jeong
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  4. Min Seok Kim
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  5. Yong Gap Park
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  6. Man Yeong Ha
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Corresponding author

Correspondence to Man Yeong Ha.

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Recommended by Associate Editor Seongwon Kang

Man Yeong Ha had his undergraduate degree from Pusan National University, Korea in 1981, his master degree from Korea Advanced Institute of Science and Technology, S. Korea in 1983, and his Ph.D. degree from Pennsylvania State University, USA in 1990. Dr. Ha is currently a Professor at the School of Mechanical Engineering, Pusan National University in Busan, S. Korea. He is an Editor of the Journal of Mechanical Science and Technology. His research interests are focused on thermal heat management, computational fluid dynamics, and finite volume method using hybrid scheme.

Jae Seok Lee had his B.S. in mechanical engineering from Pusan National University, S. Korea in 2003 and his M.S. in mechanical engineering from Seoul National University, S. Korea in 2005. He is currently a Senior Researcher in Hyundai Construction Equipment in S. Korea. His research interests are focused on virtual validation and performance improvement of cooling and hydraulic systems for construction equipment.

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Lee, J.S., Seo, Y.M., Jeong, C.H. et al. Numerical analysis and design optimization of engine room to improve cooling performance for a mid-class excavator. J Mech Sci Technol 33, 3265–3275 (2019). https://doi.org/10.1007/s12206-019-0622-5

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  • DOI: https://doi.org/10.1007/s12206-019-0622-5

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