【摘要】 喷雾的应用领域非常广泛,在汽车、航空航天、军事装备等动力装置的燃烧室中,液体雾化能够明显增大液体与气体接触的表面积,使随之发生的燃烧、传质传热过程大为加强。因此,雾化机理的研究对于实际喷雾和燃烧系统的设计和改进是十分重要的。喷射射流的一级碎裂是当今国际流体与燃烧学界研究的热点和难点,对其进行不稳定性研究异常繁复,每进展一步都是难能可贵的,至今尚未完善。本文将系统研究液体喷射的多级表面波、气液交界面的瑞利波和泰勒波、表面波的时间、空间和时空模式、扰动的维数、线性和非线性不稳定性理论等喷雾理论中的深层次问题。更多还原

【Abstract】 Sprays have a very broad application fields. A liquid spray can enhance contacting area between liquid and gas interface significantly within internal combustion engines of the automobile, aeroplane, rocket, and weapon system. It makes fuel combustion, mass and heat transfer process very fast. Therefore, spray theory research is very important to design and improve practical injection and combustion systems. Liquid jet first class breakup is a hot and difficult research point in fluid and combustion research area. An instability research is very complicated and difficult. There are still many key aspects to be improved. This paper will systematically study profund problems in spray theory, such as multi-order surface waves of liquid injection, Rayleigh and Taylor waves at the gas-liquid interfaces, temporal, spatial or convective, and absolute modes of surface waves, disturbance dimensions, linear and nonlinear instability theories.更多还原