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논문 기본 정보

자료유형
학술저널
저자정보
전상욱 (한국항공우주연구원) 이상윤 (한국항공우주연구원) 허재성 (한국항공우주연구원) 박부민 (한국항공우주연구원) 임병준 (한국항공우주연구원)
저널정보
한국유체기계학회 한국유체기계학회 논문집 한국유체기계학회 논문집 제27권 제6호(통권 제147호)
발행연도
2024.12
수록면
79 - 86 (8page)
DOI
10.5293/kfma.2024.27.6.079

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초록· 키워드

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This study presented that the cooling performance of a heat exchanger installed inside nacelle was evaluated and its improvement was explored using numerical analysis. For this end, heat exchanger was replaced with a porous model and the information required for heat transfer analysis – pressure loss coefficient, heat transfer coefficient, coolant inlet/outlet temperatures, heat, etc – was obtained from ε-NTU method. Since these values depend on the flow conditions of the coolant and air flowing into the heat exchanger, the neural network model were constructed for these and immediately provided them during numerical analysis. To verify this analysis method, the results of the cooling performance experiment for the nacelle with heat exchangers were compared. It was confirmed that the numerical approach in this study was appropriate for evaluating the cooling performance of the heat exchanger installed on the nacelle because of 1 % difference in the coolant inlet/outlet temperatures and 2 % difference in the heat dissipation of the heat exchanger. In addition, the analysis was performed considering the effect through the effects of the propeller downwash and the cooling fan mounted on the nacelle. It was confirmed that even if the propeller downwash does not enter the nacelle, the cooling performance of the heat exchanger installed inside the nacelle can satisfy the target if the cooling fan can suck 0.13 kg/s of air at 1 kPa.

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ABSTRACT
1. 서론
2. 접근 방법
3. 결과 및 토의
4. 결론
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