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K9 자주포 동력장치용 연료냉각기 열유동 성능 해석 설계
이현석(Hyunseok Lee),배석정(Sukjung Bae),홍성목(Seongmok Hong),이호남(Honam Lee),박천명(Cheonmyung Park) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5
The K9 self-propelled artillery is developed with independent Korean technology, and has been exported to various countries in Europe and Asia due to its exceptional performance and practical experience. However, the coolers used in the K9 self-propelled artillery power unit are all imported, which limits the potential for exports. To address this issue, we aim to develop and localize components that can be applied to the K9 self-propelled artillery power units. In this study, we developed a 1D performance analysis program to facilitate the alternative development of fuel coolers. The program uses design variables of the fuel coolers shape and operating conditions to calculate analysis results. We conducted a parametric study of a fuel cooler using the program, varying the number of fuel tubes and offset fin pitch. Our analysis showed that as the number of fuel tubes increases, the amount of heat dissipation increases while the pressure drop of fuel and air decreases. Furthermore, as the offset fin pitch increases, the heat transfer area decreases, the flow path increases, and the heat dissipation and pressure drop on the fuel side decrease.
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