作　　者： ; ; ; ;

机构地区： 中南大学材料科学与工程学院粉末冶金国家重点实验室

出　　处： 《粉末冶金技术》 2009年第5期331-335,共5页

摘　　要： 实际雾化过程具有不稳定性,采用稳定性模型或假设难以解释其过程。系统地考虑了雾化过程的影响因素,应用线性不稳定性理论对雾化过程中熔体碎裂机理进行了探讨,建立了雾化过程线性不稳定性数学模型,得到了熔体碎裂过程中的液柱流直径、碎裂液滴长度、支配波长等关键参数计算式。进行了水雾化和超高温雾化过程的验证实验,结果表明:线性不稳定性模型的计算值与实测结果基本吻合。 The practical atomization process is unstable, the stability theories or hypotheses are unsuitable to explain the atomization process. In this paper, the instable disintegration process of melt during atomization process was investigated and a unstable mathematical model to explain the atomization process was established. With the mathematical model, such important parameters as diameter of columnar melt, dominant wave length, length of disintegrated stripe could be calculated. Compared to the practical water atomization process and hypothermal atomization process, the data calculated by the mathematical model are close to practical experimental data.

关 键 词： 雾化过程 不稳定性 数学模型 超高温熔体 机理

领　　域： [化学工程] [核科学技术]