반원형 구조의 냉각판 성능에 관한 해석적/수치해석적/실험적 비교

국문 초록 (Abstract)

해석적, 수치해석적, 실험적인 방법을 통하여 반원형상의 채널로 구성된 냉각판의 열수력학적인 특성을 고찰하였다. 본 연구에서는 레이놀즈 수 30-2000, 그에 따른 냉각판의 압력손실 30-10? Pa 의 구간에서 수행되었으며, 냉각채널 부피비 0.04, 시스템 크기 10 × 10, 20 × 20 및 50 × 50 각각에 대하여 최적화 및 최적화되지 않은 1, 2, 3 차 형상 6 개가 포함되었다. 해석적 방법으로 설계된 혈관구조 설계를 검증하기 위하여 3 차원 수치해석이 수행되었으며, 실험을 통하여 수치해석모델에 대한 타당성이 검증되었고, 전 범위에 걸쳐서 수치해석 및 실험결과가 비교적 잘 일치된 경향을 나타내었다. 또한, 최적화된 냉각판의 유동저항 및 열저항 모두 최적화되지 않은 냉각판에 비하여 뚜렷하게 작게 나타났으며, 제시된 수치해석 모델 역시 모두 냉각판의 성능예측에 유용한 도구임이 확인되었다.

다국어 초록 (Multilingual Abstract)

An analytical, numerical, and experimental comparison of the hydraulic and thermal performance of new vascular channels with semicircular cross sections was conducted. The following conditions were employed in the study: Reynolds number, 30?2000; cooling channels with a volume fraction of the cooling channels, 0.04; and pressure drop, 30?10? Pa. Three flow configurations were considered: first, second, and third constructal structures with diameters optimized for hydraulic operations. To validate the proposed vascular designs by an analytical approach, 3-D numerical analysis was performed. The numerical model was also validated by the experimental data, and the comparison results were in excellent agreement in all cases. The validation study against the experimental data showed that compared to traditional channels, the optimized structure of the cooling plates could significantly enhance heat transfer and decrease pumping power.

목차 (Table of Contents)

• 초록
• Abstract
• 1. 서론
• 2. 해석모델
• 3. 실험장치 및 조건
• 4. 결과 및 고찰
• 5. 결론
• 참고문헌

참고문헌 (Reference)

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6 Jong Min Choi, "Numerical Analysis on the Performance of Cooling Plates in a PEFC" 대한기계학회 22 (22): 1417-1425, 2008

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