同轴气流式液体射流雾化机理研究进展

摘要

Coaxial air-assisted liquid atomization is widely applied in combustion area. Exploring the mechanism of liquid jet instability and atomization has a significant meaning of improving combustion efficiency and decreasing pollution emission. The development of coaxial air-assisted liquid jet atomization mechanism, primary breakup (air-assisted cylindrical liquid jets, air-assisted flat liquid sheets and air-assisted annular liquid sheets) and secondary breakup are reviewed, including linear stability theory, breakup deformation and effected factors. Finally the research direction of coaxial air-assisted liquid atomization is proposed.%同轴气流式液体射流雾化广泛存在工业燃烧领域中，研究液体射流雾化机理对于提高燃烧效率，降低污染物排放有十分重要的意义。从雾化理论、初次雾化形态、二次雾化形态三方面综述了同轴气流式液体射流雾化研究现状及发展，对圆柱射流、平面射流和环形射流的线性稳定性理论研究、气流作用下的形态变化、划分模式和影响因素进行了系统地阐述，分析了液滴破碎形态和理论的研究现状。最后总结了气流作用下液体射流雾化的影响因素和研究发展方向。