Heat and mass transfer processes between a water spray and ambient air -II. Simulations
Heat and mass transfer processes between a water spray and ambient air -II. Simulations
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DOI：
10.1016/j.applthermaleng.2007.09.015
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发表时间：
2008-04
影响因子：
6.4
通讯作者：
R. Sureshkumar;S. R. Kale;P. Dhar
中科院分区：
文献类型：
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作者：
R. Sureshkumar;S. R. Kale;P. Dhar
喷水蒸发冷却的实验数据由 Sureshkumar 等人生成。 [R。苏雷什库马尔，P.L.达尔，S.R.羽衣甘蓝，水喷雾和环境空气之间的传热和传质过程 - I. 实验数据，应用。热。工程师。 xxx (2007) xxx–xxx, doi:10.1016/j.appl Thermaleng.2007.09.010.] 其中不确定性大大减少。对四种喷嘴尺寸进行了热干和热湿条件测试，涵盖 35 至 47°C 的 DBT，以及平行和逆流配置中相对湿度 10-60% 的情况。三个水压 1、2 和 3bar(g) 以及三个风速 1、2 和 3ms−1 完成了测试矩阵。这里描述了液滴和空气之间传热传质双向耦合的模拟模型。使用最大熵公式，生成液滴直径-速度组合，并将其分类为 200 个块，这是液滴运动的初始条件。对于并流配置，仿真结果和实验数据的一致性在 ±15% 范围内；对于逆流配置，仿真结果和实验数据的一致性在 ±30% 范围内。这些实验和模拟都比以前的研究有所改进。
Experimental data on evaporative cooling by water sprays was generated by Sureshkumar et al. [R. Sureshkumar, P.L. Dhar, S.R. Kale, Heat and mass transfer processes between a water-spray and ambient air – I. Experimental data, Appl. Therm. Eng. xxx (2007) xxx–xxx, doi:10.1016/j.applthermaleng.2007.09.010.] where uncertainties were reduced substantially. Four nozzle sizes were tested for hot-dry and hot-humid conditions that covered DBT from 35 to 47°C, and R.H. 10–60% in parallel and counter flow configurations. Three water pressures 1, 2 and 3bar(g) and three air velocities 1, 2 and 3ms−1completed the test matrix. A simulation model for two-way coupling of heat and mass transfer between the droplets and air is described here. Using the Maximum Entropy Formulation, droplet diameter–velocity combinations were generated and classified into 200 parcels that were the initial conditions for droplet motion. Simulation results and experimental data agree within ±15% for parallel and ±30% for counter flow configurations. Both, these experiments and simulations are improvements over the previous studies.