Natural convection of cold water in a vertical annulus with constant heat flux on the inner wall

Ching-Jenq Ho, Y. H. Lin

研究成果: Article

42 引文 (Scopus)

摘要

A numerical solution for steady laminar natural convection of cold water in a vertical annulus with a constant-heat-flux heated inner wall and an isothermally cooled outer wall is examined. Results are generated for flow in annuli with aspect ratio 0.5 ≤ A ≤ 8, the radius ratio varying between 1.2 and 10, and the density inversion parameter ranging from -2 and 1 for 103 ≤ Ra* ≤ 106. The heat and fluid flow structures of cold water are vividly visualized by means of contour maps of heat lines and streamlines. The results clearly indicate that the mixed boundary conditions considered can have a significant influence on the geometric dependence of heat transfer characteristics and fluid flow structures in comparison with those reported for isothermal boundary conditions. Multi cellular flow behavior of cold water can arise in a tall annulus of A = 8.

原文English
頁(從 - 到)117-123
頁數7
期刊Journal of Heat Transfer
112
發行號1
DOIs
出版狀態Published - 1990 一月 1

指紋

cold water
annuli
Natural convection
free convection
Heat flux
heat flux
Flow structure
fluid flow
Water
Flow of fluids
Boundary conditions
boundary conditions
Heat transfer
flow characteristics
heat transmission
aspect ratio
Aspect ratio
heat transfer
inversions
heat

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

引用此文

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