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송년주(Nyeonjoo Song),강형석(Hyungsuk Kang) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
Temperature distribution of the asymmetric trapezoidal fin with various upper lateral surface slopes is investigated by using the two-dimensional analytic method. For this asymmetric fin, convection from the inner fluid to the inner wall, conduction from the inner wall to the fin base and conduction through the fin base are considered simultaneously. Temperature profile along the dimensionless fin length and height. Also, temperature variation at the fin bottom tip is presented as a function of the fin shape factor. One of the results shows that temperature at the fin bottom tip face is decreased linearly as the fin shape factor increases.
고정된 핀 바닥 높이에 기준한 비대칭 사다리꼴 핀의 최적화
송년주(Nyeonjoo Song),강형석(Hyungsuk Kang) 한국추진공학회 2012 한국추진공학회지 Vol.16 No.1
Optimization of the asymmetric trapezoidal fin with various upper lateral surface slope is made using a two-dimensional analytic method. For the fixed fin base height, the optimum heat loss, fin length and effectiveness are represented as inner fluid convection characteristic number, fin base thickness, fin base height, fin shape factor and ambient convection characteristic number. For this optimum procedure, the optimum heat loss is defined as 95% of the maximum heat loss from the fin. One of the results shows that optimum heat loss and effectiveness seems independent of the fin shape factor while optimum fin length decreases almost linearly as the fin shape factor increases.
향상된 열교환기를 위한 기하학적 비대칭 사다리꼴 핀의 성능 해석
송년주(Nyeonjoo Song),강형석(Hyungsuk Kang) 한국자동차공학회 2011 한국 자동차공학회논문집 Vol.19 No.4
Performance of the asymmetric trapezoidal fin with various upper lateral surface slopes is investigated by using the two-dimensional analytic method. For a fin base boundary condition, convection from the inner fluid to the inner wall, conduction from the inner wall to the fin base and conduction through the fin base are considered. Heat loss and fin efficiency are represented as a function of the fin base thickness, base height, inner fluid convection characteristic number, fin tip length and fin shape factor. One of the results shows that heat loss increases while fin efficiency decreases as the fin shape factor increases.