The paper presents novel analytical droplet breakup criteria, on Weber number (We)-relative turbulence intensity and We-Ohnesorge (Oh) representations, based on the critical Weber number. The We-Oh analytical criterion stressed the importance of turbulence effects on We-Oh breakup criterion at high We-Oh applications. In developing the analytical models the energy criterion for a disturbed parent droplet to disintegrate and the dual-timescale for turbulent shear in droplet dispersion were considered. The present model has an advantage over to two popular droplet breakup criterion models (Pilch-Erdman and Kolev) because the present model has the ability to support a parametric investigation of droplet breakup characteristics in turbulent flow fields. The Weber-relative turbulence intensity and We-Oh analytical breakup criteria are in good agreement with published experimental data. It is envisaged that the analytical model will be incorporated into larger CFD codes for spray simulation. The continuous research in this important area will present the next generation fuel injectors for improved fuel economy of internal combustion engines, especially high-pressure direct injection engines. The model has the potential to be applied in other natural and engineering systems.

本文基于临界韦伯数，提出了关于韦伯数（We）相对湍流强度和韦氏欧姆（Oh）表示形式的新颖的液滴分解标准。We-Oh分析标准强调了在高We-Oh应用条件下湍流效应对We-Oh分解标准的重要性。在建立分析模型时，考虑了扰动的母滴崩解的能量准则和液滴分散中湍流剪切的双重时间尺度。本模型相对于两个流行的液滴分解标准模型（Pilch-Erdman和Kolev）具有优势，因为本模型具有支持湍流场中液滴分解特性的参数研究的能力。韦伯相对湍流强度和We-Oh分析破裂标准与已发表的实验数据高度吻合。可以设想将分析模型合并到较大的CFD代码中以进行喷雾模拟。在这一重要领域的持续研究将提出下一代燃油喷射器，以改善内燃机，尤其是高压直喷发动机的燃油经济性。该模型具有在其他自然和工程系统中应用的潜力。特别是高压直喷发动机。该模型有可能在其他自然和工程系统中应用。特别是高压直喷发动机。该模型具有在其他自然和工程系统中应用的潜力。