The Experimental Investigation on the Transpiration Cooling : (2nd Report, Coolling Effectiveness and Heat Transfer Performance of Gaseous Coolant)

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概要

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• The heat transfer coefficient and the cooling efficiency with transpiration of gaseous coolant were decided experimentally. The conditions selected for the experiments were as follows : Velocity of free stream is 5〜25 m/sec Temperature of free stream is 100〜600℃ Coolant flow ratio is 0.5〜5% From these investigations the following results were obtained. (1) The cooling efficiency is proportional to the cooling flow ratio and the proportionality constant increases with Reynolds number of free stream. (2) The heat transfer coefficient invreases with the coolant flow ratio and then begins to decrease. The coolant flow ratio for the maximum value of heat transfer coefficient decreases with an increasing Reynolds number of free stream. (3) The ratio of Nusselt number with and without transpiration of air remains at about unity or slightly larger than unity.

• 一般社団法人日本機械学会の論文

著者

• Kikkawa Shinzo

  Faculty Of Engineering Doshisha University

• TAKEDA Motohiro

  Mitsubishi Heavy Industrial Co.

関連論文

• The Experimental Investigation on the Transpiration Cooling
• The Experimental Investigation on Transpiration Cooling : 3rd Report, The Case Using Dry Saturated Vapor or Superheated Vapor as a Coolant
• Investigation on the Boundary Layer with Combustion : 1st Report, Laminar Boundary Layer Theory on a Flat Plate (the Transactions of the Japan Society of Mechanical Engineers) : Papers published in the Bulletin of the JSME are not included here
• Research on the Pneumatic Conveyance of Densely Concentrated Solid Particles in a Horizontal Pipe
• The Investigation on the Secondary Flow Induced by Jets : 1st Report, The Case of Double Submerged Jets
• On the Pressure Drop and Clogging Limit in the Horizontal Pneumatic Conveyance Pipe
• The Experimental Investigation on the Transpiration Cooling : (2nd Report, Coolling Effectiveness and Heat Transfer Performance of Gaseous Coolant)
• Fundamental Investigation on the High Intensity Combustion : 1st Report, On the Local Combustion Efficiency in an Upright Combustion Chamber
• The Experimental Investigation on the Combustion of a Carbon Globule in a Gas Stream

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