The paper focuses on experimental investigation and modelling of the evaporation of supported ethanol/water droplets in an air flow. The modelling is based on the effective thermal conductivity/effective diffusivity model, using the analytical solutions to the transient heat transfer and species diffusion equations in droplets at each time step. The contribution of the supporting thread is included in the model. Model predictions are shown to be compatible with experimental data. For all mass fractions of ethanol, droplet surface temperatures rapidly decrease initially. This is followed by an increase in this temperature for non-zero mass fractions of ethanol in the mixture. For pure water this temperature remains almost constant after an initial decrease. In all cases, droplet diameters to power 1.5 decrease almost linearly with time. This agrees with model predictions in the limit for large droplet Reynolds numbers.

本文侧重于空气流中支持的乙醇/水滴蒸发的实验研究和建模。该建模基于有效热导率/有效扩散率模型，在每个时间步使用液滴中瞬态传热和物质扩散方程的解析解。支持线程的贡献包含在模型中。模型预测显示与实验数据兼容。对于乙醇的所有质量分数，液滴表面温度最初迅速下降。随后对于混合物中非零质量分数的乙醇提高该温度。对于纯水，该温度在最初降低后几乎保持不变。在所有情况下，1.5 次方的液滴直径几乎随时间线性下降。