루우버휜형 열교환기의 유동 및 열전달 특성에 관한 수치해석 = Numerical Analysis on Flow and Heat Transfer Characteristics in Multi-louber Fin Heat Exchanger

다국어 초록 (Multilingual Abstract)

Abstract
Low Reynolds k - ε turbulent modelling which has net been adopted on the study of characteristics on multi - louver fin heat exchanger has been conducted to study flow fields and heat transfer characteristics in the 15 : 1 scaled models based on multi - louver fin heat exchangers, those are being used in industry, in the range of various design parameters(Fp=20mm∼40mm, Lp=12mm∼18mm, θ = 20˚∼40˚)and inlet flow conditions(ReLP=100 1200) and mean flow angle, velocity profile, temperature profile, local average Nusselt number and so forth have been presented.
By using of new flow efficiency defined by the concept including the effect of velocity, the relation with mean flow angle and heat transfer has been clarified because the definition of exisiting flow efficiency is not enough to make it clear. The best geometric condition for heat transfer is as follows ; Lp/Fp=0.9, θ =40˚. Generally the influence and occurrence of recirculation flow are increased as Reynolds mumber and louver angle increase but those are decreased as Lp/Fp increases.

목차 (Table of Contents)

• 차례
• Ⅰ. 서론
• Ⅱ. 이론
• Ⅲ. 수치해석 결과 및 고찰
• Ⅳ. 결론