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  • Open Access

    ARTICLE

    FLAME STABILITY OF PROPANE-AIR PREMIXED COMBUSTION IN HEAT-RECIRCULATION MICRO-COMBUSTORS

    Junjie Chen*, Wenya Song, Xuhui Gao, Longfei Yan, Deguang Xu

    Frontiers in Heat and Mass Transfer, Vol.7, pp. 1-9, 2016, DOI:10.5098/hmt.7.3

    Abstract The flame stability of single-pass heat-recirculation micro-combustors was investigated using computational fluid dynamics and compared to singlechannel micro-combustors with respect to critical heat loss coefficient and total power loss. The effect of wall thermal conductivity was also explored. The simulations show that heat recirculation profoundly affects blowout because of preheating of the cold incoming gases but has only minimal effect on extinction. In the limit of low-conductivity walls, the heat-recirculation micro-combustor is much more stable than the single-channel microcombustor. Under certain conditions, the heat recirculation micro-combustor can operate with room-temperature inlet and outlet streams and More >

  • Open Access

    ARTICLE

    A Method for the Detection of the Distance & Orientation of the Relief Well to a Blowout Well in Offshore Drilling

    Cui Li1, Deli Gao1, Zhiyong Wu1, Binbin Diao1

    CMES-Computer Modeling in Engineering & Sciences, Vol.89, No.1, pp. 39-56, 2012, DOI:10.3970/cmes.2012.089.039

    Abstract At present, a relief well is the most reliable method to control serious blowout accidents, and it is necessary to detect very accurately the relative position of the relief well and the blowout well. The detection tool should be capable of detecting directly the relative distance and direction between the relief well and the blowout well. Its detection accuracy should also meet the engineering demand of drilling a relief well. Using the working principle of a proposed detection tool, this paper analyzes the spread and attenuation laws of the current injected by a single-electrode or More >

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