【摘要】 在转炉熔池的水模型内,用二维激光—多普勒测速仪,对速度分布和湍动能分布进行了较详细的测试。参照流谱图进行分析研究发现,底吹熔池的流动是由被气泡区直接抽引的外层和被外层拖带的内层组成。直接被抽引的比例约为30%。分别对内层和外层中的速度变化规律和湍动能变化规律进行了描述。更多还原

【Abstract】 By using a two-dimensional laser-Doppler Velocimeter,the velocity and turbulent kinetic energy in a bottom blown water bath were measured.Based on the data and the flow pattern it was found that the recirculating flow in the bath consisted of two layers,one of which,the outside layer,was ent- rained by the gas plume and the other,the inside layer,was driven by the outside fluid.The portion of the entrained layer is about 30%.The distribut- ions of velocity and turbulent kinetic energy in the two layers are also desc- ribed in this paper.更多还原