Journal of Advanced Marine Engineering and Technology

  • 제23권1호
  • /
  • Pages.33-39
  • /
  • 1999
  • /
  • 2234-7925(pISSN)
  • /
  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
권호 표지

곡관덕트의 입구영역에서 천이정상유동의 유동특성에 관한 연구

A Study on the Flow Characteristics of developing transitional Steady Flows in the Entrance Region of a Curved Duct

  • 봉태근 (목포해양대학교 기관공학부)
  • 발행 : 1999.01.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper an experimenatal investigation of characteristics of developing ransitional steady flows in a square-sectional $180^{\circ}$ curved duct is presented, The experimental study is carried out to measure axial velocity profiles secondary flow velocity profiles and entrance length by using Laser Dopper Velocimeter(LDV) system. The flow development is found to depend upon Dean number and curvature ratio. Of special interest is the secondary flow generated by centrifugal effects in the plane of the cross-section of the duct. The secondary flows becomes strong from $120^{\circ}$ of bended angle on the duct. The entrance length of transitional steady flow is obtained to $120^{\circ}$ of bended angle of the duct in this experimental conditions.

키워드

참고문헌

  1. Proc. R. Soc. Ser. A. 84-568 Flow of Water in Curved Pipes Eustice, J.
  2. Proc. R. Soc. Ser. A. 84-576 Experiments on Stream-line Motion in Curved Pipes Eustice, J.
  3. Phil. Mag. S. 7 v.4 no.20 Note on the Motion of Fluid in a Curved Pipe Dean, W. R.
  4. Phil. Mag. S. 7 v.5 no.30 The Stream-line Motion of Fluid in a Curved Pipe Dean, W. R.
  5. 東北大學高速力學 硏究報告 v.4 no.35 直管曲管の層流理論 Ito, H.
  6. AIChE. J. v.19 no.1 Fully Developed Viscous Flow in Coiled Circular Pipes Austin, L. R.;Seader, J. D.
  7. J. Fluid Mech v.151 The Deveolopment and Structure of Primary and Secondary Flow in a Curved Square Duct Hille, P.;Vehrenkamp, R.;Schulz-Dubois, E. O.
  8. 東北大學高速力學 硏究報告 v.12 no.113 曲り管の流れに關する理論的ならぴに實驗的硏究 Ⅴ Ito, H.
  9. 日本機械學會論文集(B編) v.53 no.487 Flows in a Curved Rectangular Channel(2nd Report) Sugiyama, S.;Yamamoto. M.;Hayashi, T.