Turbulent Heat Transfer from a Surface Having Stepwise Discontinuities on the Wall Temperature

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概要

• 論文の詳細を見る

• Convective heat flux from a nonisothermal surface can be calculated by employing the Spalding function as the turbulent heat transfer coefficient and by the method of superimpositions of temperatures. And it gives a better accuracy for the calculation than the other heat transfer coefficients. However, the result is not always in good agreement with the measured one. An experiment is carried out in this paper to examine whether the discrepancy originates in wall temperature approximation for the superimposition or in the calculation method itself. The experimental surface is isothermal including many stepwise discontinuities on the wall temperature, so that any temperature approximation is unnecessary for the calculation. An idea to normalize the data from different wall temperature distributions is introduced. The experimental result shows that the method of superimposition with the Spalding function is proper.

• 一般社団法人日本機械学会の論文

著者

• Ishiguro Ryoji

  Faculty Of Engineering Hokkaido University

• SHIGETOMI Fumitsugu

  Faculty of Engineering, Hokkaido University

• MAEDA Shoichi

  Faculty of Engineering, Hokkaido University

• Maeda Shoichi

  Faculty Of Engineering Hokkaido University

• Shigetomi Fumitsugu

  Faculty Of Engineering Hokkaido University

関連論文

• Heat Transfer Performance of Liquid Sodium Open Thermosyphons : Series B : Fluid Engineering, Heat Transfer, Combustion, Power, Thermophysical Properties
• Heat Transfer from Nonisothermal Flat Plates across a Turbulent Boundary Iayer
• Turbulent Heat Transfer from a Surface Having Stepwise Discontinuities on the Wall Temperature

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