Experimental study of heat transfer coefficient in a spark ignition engine (1st report, relation between gas velocity and heat transfer coefficient under motored conditions)

Hidenori Tasaka, Hiroshi Tajima

研究成果: ジャーナルへの寄稿記事

抄録

Many studies have been made on heat flux or heat transfer coefficient in internal combustion engines to increase thermal efficiency or to solve thermal loading problems. However, there are few cases in which heat flux of engine walls and gas velocity in a cylinder were measured under the same experimental conditions. In this study, gas velocity was varied by changing the setting angle of an intake shrouded valve. Heat flux was measured by the thin film thermocouple transducers and gas velocity was measured by a hot wire anemometer under motored conditions. Heat transfer coefficient was calculated from measured heat flux and physical properties at the cylinder gas temperature. As a result, the relationship between gas velocity (Re number) and heat transfer coefficient (Nu number) was found to be subjected to the equation Nu=a+b · Ren.

元の言語英語
ページ(範囲)2902-2906
ページ数5
ジャーナルNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
62
発行部数599
DOI
出版物ステータス出版済み - 1 1 1996

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spark ignition
heat transfer coefficients
Internal combustion engines
Heat transfer coefficients
engines
Heat flux
heat flux
Gases
gases
Gas cylinders
hot-wire anemometers
Intake valves
internal combustion engines
thermodynamic efficiency
Anemometers
Engine cylinders
thermocouples
Thermocouples
gas temperature
Transducers

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

これを引用

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