外部からのふく射加熱に起因する火炎振動伝ぱ現象(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
Effect of external radiation on flame propagation phenomena of ethylene premixed gas was investigated. The mixture is charged in the combustion tube of 50 mm in diameter at 0.1 MPa and C0_2 laser was used as an external radiation source. We found that flame oscillation phenomena occurred in some conditions. The results showed that when C0_2 laser power was stronger than a given value and the Full-Width-Half-Maximum (FWHM) of C02 laser was 5 mm, flame oscillation occurred clearly. The flame oscillation pattern was influenced by the component of gas mixture and gravitational condition. It was suggested that this phenomena is caused by the transformation of flame front curvature by locally increased flame speed which closely relates with thermal-diffusive flame instability in combination with flame stretch effect.
社団法人日本機械学会の論文
2007-03-25