TED-AJ03-612 THE EFFECT OF EQUIVALENCE RATIO ON FLAME JET IMPINGEMENT HEAT TRANSFER

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概要

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• Local time-mean and time-resolved heat transfer has been investigated for a jet impinging upward against a cooled plate. The oxidizer and fuel were premixed at varying equivalence ratios between 1 and 12 (stoichiometric to fuel-rich conditions). The local time-resolved heat flux was measured using a rapid-response, thin-film heat flux gage embedded in the cooled plate. The time-resolved heat flux data were acquired digitally, and post-processed to determine the time-mean, standard deviation, probability density function, and power spectral density as a function of radial distance from the flame's stagnation point. The flame structure was observed to be govern the heat flux radial profiles. As the flame transitioned from a stoichiometric premixed to a jet diffusion flame by an increase in equivalence ratio, the time-mean and standard deviation of stagnation heat flux decreased. Preferred frequencies were observed in the heat flux power spectral density functions of diffusion flames associated with the buoyancy-driven flame oscillations.

• 一般社団法人日本機械学会の論文

著者

• Tuttle S.

  Department Of Mechanical Engineering Brigham Young University

• Webb B.

  Department Of Mechanical Engineering Brigham Young University

• McQuay M.

  Department of Mechanical Engineering Brigham Young University

関連論文

• TED-AJ03-612 THE EFFECT OF EQUIVALENCE RATIO ON FLAME JET IMPINGEMENT HEAT TRANSFER
• TED-AJ03-343 FULLY-DEVELOPED THERMAL TRANSPORT IN COMBINED PRESSURE AND ELECTRO-OSMOTICALLY DRIVEN FLOW IN MICROCHANNELS

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