摘要
建立了球对称的液滴在空气中蒸发时分子扩散的微分方程,通过求解得到了液滴质扩散速率的数学表达式。建立了液滴蒸发非稳态阶段的数学模型,并用迭代方法对该模型进行了数值求解。求解的结果表明:非稳态阶段的过程很短,液滴尺寸的变化很小。
The molecular diffusion differential equation of spheroid symmetrical droplet evaporation in the air is established. By solving the differential equation, the mathematical expression of droplet＇s mass diffusion rate is obtained. The mathematical model of droplet evaporation in unsteady - state period is established. And the mathematical model is numerically calclated by iterative method. The solution indicated that the unsteady - state period of droplet evaporation is very short and the droplet size＇s change is very small.
出处
《制冷》
2007年第3期45-48,共4页
Refrigeration
关键词
液滴蒸发
非稳态过程
数值求解
Droplet evaporation, Unsteady- state period, Numerical calculation
