摘要
在前人工作的基础上推导出了能够精确计算过饱和状态下临界液滴半径的计算公式,并且根据已有实验数据拟合出了能够精确预测液滴表面张力的计算公式。然后综合考虑了水蒸气状态方程、表面张力计算方法和水的密度计算方法对计算临界液滴半径的影响,进而得出了计算过饱和状态下临界液滴半径的具体形式。最后通过对该计算公式的分析,认为在低过饱和度下计算临界液滴半径时,可以采用临界液滴半径计算公式的简化形式。
Based on the earlier work performed by other researchers the authors have derived a formula for the accurate calculation of the critical radius of a spherical liquid droplet under a super-saturation state. In addition, on the basis of available experimental data a formula for the exact prediction of liquid-droplet surface tension was obtained by using a fitting process. Then, by a comprehensive consideration of the influence of steam state equation, surface tension and water density calculation method on the calculation of liquid droplet critical radius a specific mode for calculating liquid droplet critical radius under a supersaturation state was developed. Finally, through an analysis of the above-mentioned calculation formula it is considered appropriate to adopt a simplified form of the critical radius calculation formula during the calculation of liquid-droplet critical radius under a low supersaturation state.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2005年第3期255-257,274,共4页
Journal of Engineering for Thermal Energy and Power
基金
高等学校博士学科点专项科研基金资助项目(200400050008)
北京市教委重点实验室基金资助项目(KP0504200399)
关键词
过饱和状态
水蒸气
液滴
临界半径
supersaturation state, steam, liquid droplet, critical radius
