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NTIS 바로가기大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, v.34 no.7 = no.298, 2010년, pp.703 - 714
문미애 (인하대학교 기계공학과) , 아프잘 후세인 (인하대학교 기계공학과) , 김광용 (인하대학교 기계공학과)
국가컴퓨팅센터 유발 논문
This paper describes the design optimization of a rotating rectangular channel with staggered arrays of pin-fins by Kriging metamodeling technique. Two non-dimensional variables, the ratio of the height to the diameter of the pin-fins and the ratio of the spacing between the pin-fins to the diameter...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
유동간섭물 중 핀휜의 경우, 설치 시 어떤 효과가 생기는가? | 이러한 유동간섭물은 난류의 발생을 촉진시켜 열전달을 증가시키는 역할을 수행한다. 핀휜의 경우, 열전달면과 핀휜의 접촉부에서 형성되는 와류(말발굽 와류, 재순환 와류 등)로 인해 열전달면의 냉각 효과가 증대된다. | |
내부유로 냉각기술은 어떤 기법인가? | 내부유로 냉각기술은 오랜 기간에 걸쳐 연구되어 온 기술로서, 냉각유체를 블레이드 내부유로에 주입하여 강제대류를 발생시킴으로써 고온의 블레이드를 냉각시키는 기법이다. 내부유로를 통한 열전달을 강화시키기 위하여 내부유로 벽면에 핀휜(Pin-fin), 리브(Rib), 그리고 딤플(Dimple) 등과 같은 유동간섭물이 설치된다. | |
유동간섭물에는 어떤 것들이 있는가? | 내부유로 냉각기술은 오랜 기간에 걸쳐 연구되어 온 기술로서, 냉각유체를 블레이드 내부유로에 주입하여 강제대류를 발생시킴으로써 고온의 블레이드를 냉각시키는 기법이다. 내부유로를 통한 열전달을 강화시키기 위하여 내부유로 벽면에 핀휜(Pin-fin), 리브(Rib), 그리고 딤플(Dimple) 등과 같은 유동간섭물이 설치된다. 이러한 유동간섭물은 난류의 발생을 촉진시켜 열전달을 증가시키는 역할을 수행한다. |
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Liou, T. M., Chang, S. W., Hung, J. H. andChiou, S. F., 2007, "High Rotation Number HeatTransfer of a $45^{\circ}$ ib-Roughened Rectangular Ductwith Two Channel Orientations," InternationalJournal of Heat and Mass Transfer, Vol. 50, pp.4063-4078.
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Michael Huh, Yao-Hsein Liu and Je-Chin Han,2009, "Effect of Rib Height on Heat Transfer in aTwo Pass Rectangular Channel (AR1:4) with aSharp Entrance at High Rotating Numbers,"International Journal of Heat and Mass Transfer,Vol. 52, pp. 4635-4649.
Mohammad Al-Qahtani, Hamn-Ching Chen andJe-Chin Han, 2002, "A Numerical Study of Flowand Heat Transfer in Rotation Rectangular Channels(AR4) with $45^{\circ}$ Rib Turbulators by Reynolds StressTurbulence Model," Proceedings of ASME TurboExpo, Amsterdam, The Netherlands, GT-2002-30216.
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Shyy Woei Chang, Tsun Lirng Yang, Tong-MiinLiou and Hong Guo Fang, 2009, "Heat Transfer inRotating Scale-Roughened Trapezoidal Duct at HighRotation Numbers," Applied Thermal Engineering,Vol. 29, pp. 1682-1693.
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