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| 1 | Experimental study of flame spread over oil floating on water显示文摘The phenomena and mechanism of flame spread over oil floating on water were studied using temperature measurements made by fine thermocouples and an infrared camera,schlieren images of surface convection and video recordings of flame spread.The experimental results reveal that the floating-oil depth greatly affects the average rate of flame spread and average flame pulsation wavelength.The surface tension effect is the main cause of surface convection,which controls flame spread.Momentum loss and heat loss from forward-flowing hot oil to water play an important role in retarding flame spread for oil thicknesses less than about 8 mm. | GUO Jin LU ShouXiang ZHOU JieBo LI ManHou WANG ChangJian | 2012 | Chinese Science Bulletin2012，57，9： | 1 |
| 2 | Experimental Study on Spark Ignition of Non-premixed Hydrogen Jets显示文摘The leaks of pressurized hydrogen can be ignited if an ignition source is within a certain distance from the source of the leaks, and jet fires or explosions may take place. In this paper, a high speed camera was used to investigate the ignition kernel development, ignition probability and flame propagation along the axis of hydrogen jets, which leaked from a 3-mm-internal-diameter nozzle and were ignited by an electric spark. Experimental results indicate that for successful ignition events, the ignition delay time increases with an increase of the distance between the nozzle and the electrode. Ignitable zone of the hydrogen jets is underestimated if using the predicted hydrogen concentration along the jets centerline. The average rate of downstream flame decreases but that of the upstream flame increases with the electrode going far from the nozzle. | Jin Guo Changjian Wang Manhou Li Qize He | 2014 | Journal of Thermal Science2014，23，4： | 0 |
| 3 | Flame Spread over Aviation Kerosene with an Obstacle in Liquid Phase显示文摘The phenomena of flame spread over aviation kerosene with an obstacle in liquid phase are investigated experimentally through surface temperature measurement by using infrared camera,schlieren images of subsurface flow in front of and behind obstacle and residence time of flame obtained from video recording.Experimental results reveal that obstacle has no effect on gas phase controlled flame spread.But for liquid phase controlled flame spread,flame can be stopped by an obstacle with its top edge flush with oil surface,and the residence time decreases with the increase of initial temperature of fuel.That conduction and radiation only play a subsidiary role in flame spread over liquid fuel was proved by schlieren images and surface temperature profiles. | Jin GUO Shouxiang LU Manhou LI Changjian WANG | 2011 | Journal of Thermal Science2011，20，6： | 0 |
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