왕복운동을 하는 사각채널에서 파형테이퍼가 열전달에 미치는 효과

Effects of Wavy Tapers on Heat Transfer in the Reciprocating Rectangular Channel

  • 안수환 (경상대학교 기계항공공학부 해양산업연구소) ;
  • 배성택 (경상대학교 대학원 기관공학과)
  • 발행 : 2003.07.01

초록

This Paper describes a detailed experimental investigation of heat transfer in a reciprocating smooth rectangular duct having only the bottom wall heated with reference to the design of a piston for a marine propulsive diesel engine The Parametric test matrix involves Reynolds number and reciprocating radius, respectively, in the range of 1.280∼4.100, and 7∼15 cm with five different reciprocating frequency tested. namely. 1.7, 2.2, and 2.6 Hz. The effects of three different hemi-triangular wavy type tapers on the heat transfer in the reciprocating rectangular channel using the air as a working fluid were check out. The present work confirms that the Nusselt number in the channel with the triangular wavy type taper is lower than without the triangular wavy type taper.

키워드

참고문헌

  1. 한국박용기관학회지 v.26 no.5 최근의 박용디젤엔진의 동향 전효중
  2. Marine News Sulzer RTA 60C-The New Generation Two-Stroke Propulsion Engine Aeberli,A.
  3. J. Exp. Heat Transfer v.13 Heat Transfer of Orthogonal Mode Reciprocating Tube Fitted With Twisted Tape Chang,S.W. https://doi.org/10.1080/089161500269580
  4. ASME J. Heat Transfer v.121 An Experimental Study of Heat Transfer in Reciprocating Square Duct Fitted With Ribs Skewed to The Flow Chang,S.W.;Su,L.M.;Yang,T.L.;Hwang,C.C. https://doi.org/10.1115/1.2825956
  5. J. Fluid Mechanics v.328 The Development of Asymmetry and Period Coupling for Oscillatory Flow in Baffled Channels Roberts,E.P.L.;Mackley,M.R. https://doi.org/10.1017/S0022112096008634
  6. J. Fluid Mechanics v.168 Oscillatory Flows in Wavy-Walled Tubes Ralph,M.E. https://doi.org/10.1017/S0022112086000496
  7. 한국박용기관학회지 v.26 no.6 거친사각채널에서 왕복운동이 열전달에 미치는 효과 안수환;손강필
  8. Enhanced Heat Transfer v.7 Turbulent Heat Transfer Enhancement and Surface Heating Effect in Square Channels with Wavy, and Twisted Tape Inserts with Interrupted Ribs Zhang,Y.M.;Azad,G.M.;Han,J.C.;Lee,C.P. https://doi.org/10.1615/JEnhHeatTransf.v7.i1.40
  9. Mechanical Engineering v.75 Describing Uncertainty in Single-Sample Experiments Kline,S.J.;McClintock,F.A.