The present paper deepens the analysis on the dynamics and thermal-fluid-dynamics of a sprinkler nozzle-emitted water droplet traveling in air before reaching the ground. The following analysis variables were considered, as main causes of the phenomenon assessed: initial droplet diameter, initial droplet velocity, initial droplet temperature, variable droplet temperature, air temperature, diffusion coefficient of water in air, air relative humidity, inlet droplet throw inclination, thermal radiation, and wind velocity. These variables proved their effect on the droplet travel distance, the droplet time of flight, and the final droplet temperature. The study was carried out thanks to an analytical-numerical model, recently proposed by the same authors of this paper, equipped with a few assumptions that did not alter the realistic description provided. The results proved the effect of each analysis variable and clarify the picture of a complicate yet extremely important phenomenon.

中文翻译：

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水滴动力学和相变的参数分析

本文加深了对洒水喷头产生的水滴在到达地面之前在空气中传播的动力学和热流体动力学的分析。考虑以下分析变量，作为评估该现象的主要原因：初始液滴直径，初始液滴速度，初始液滴温度，可变液滴温度，空气温度，空气中水的扩散系数，空气相对湿度，入口液滴投掷倾斜度，热辐射和风速。这些变量证明了它们对液滴的行进距离，液滴的飞行时间以及最终的液滴温度的影响。这项研究的完成得益于本文的同一作者最近提出的解析数值模型，配备了一些假设，这些假设并未改变所提供的现实描述。结果证明了每个分析变量的作用，并阐明了一个复杂但极为重要的现象的图景。