Optical Observation of Vortex-Flame Interaction Using Spark-Ignited Premixed Flames in a Quasi-Turbulent and Quiescent Wake
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概要
- 論文の詳細を見る
Structure and behavior of spark-ignited propane-air premixed flames established in the quasi-turbulent and quiescent wake, which is generated by quickly moving a fine rod-array vertically downward in the quiescents stoichiometric propane-air mixtue, are observed and analyzed using tomography and PTV. It is found that the quasi-turbulent and quiescent wake proposed here is composed of Karman vortex streets with the characteristic length scale ranging 0.2〜0.5 mm and the tangential velocity of 4.0 m/s, and therefore that it satisfies rather small and intense turbulence conditions of l_d/δ_L〓1 and v_θ/S_L〓10. Since the interface between the unburnt and burnt gases exhibits complicated and rugged appearances and consists of a continuous series of wrinkled flame elements of the length scale ranging 0.2〜2 mm, the turbulent flame established in the quasi-turbulent and quiescent wake with the moderately intense turbulence conditions of l_d/δ_L〓1 and v_θ/S_L〓10 is classified into the finely wrinkled laminar flame.
- 社団法人日本機械学会の論文
- 2000-11-15
著者
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Ohiwa N
Nagoya Inst. Technol. Nagoya Jpn
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Ohiwa Norio
Graduate School Of Engineering Nagoya Inst. Of Technol.
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Ohiwa Norio
Department Of Mechanical Engineering Nagoya Institute Of Technology
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ISHINO Yojiro
Department of Mechanical Engineering, Nagoya Institute of Technology
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HATTORI Yasunori
Tamano Works, Mitsui Engineering & Shipbuilding Co., Ltd.
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Ishino Yojiro
Department Of Mechanical Engineering Nagoya Institute Of Technology
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Hattori Yasunori
Tamano Works Mitsui Engineering & Shipbuilding Co. Ltd.
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