A new criterium based on the ratio of local spray dragging force to local smoke buoyancy was proposed to analyze the stability of smoke under sprinkler spray.

• 对水喷淋作用时液滴与烟气层的相互作用过程进行分析,采用单位体积液滴拖曳力与烟气浮力的比值作为参数,建立了水喷淋作用时烟气层稳定性的判断方法。