为强化湿空气-水外掠交错管束的传热传质性能，基于DPM（discrete phase model）和Wall film模型耦合方法，构建了湿空气-水交错管束的传热传质特性分析模型。经验证模拟结果与文献数据最大误差为1.1%。研究了3个关键结构参数对其热质传递特性的影响。结果表明，管束纵向间距及横向间距的增加能提高管壁-喷淋水间的传热性能，横向间距的增加使湿空气-喷淋水间传质性能降低。其中，在纵向间距从30 mm增加到70 mm过程中努谢尔特数Nu升高了33.3%；在横向间距从10 mm增加到50 mm过程中，努谢尔特数Nu升高了73.5%。此外，管径越大，管束与喷淋水接触面积越大，换热性能越好。在横纵间距一定时，最大管径（24 mm）的湿空气温度最低，降幅为11.2%，同时其焓值最高，升幅为35.6%。研究结果为优化交错管束结构和提高传热传质效率提供了理论依据。

In order to strengthen the heat-mass transfer performance of humid air-spray water outside staggered tube bundles(STB), an analytical model was constructed for heat-mass transfer performance of humid air-spray evaporative cooling in staggered tube bundles based on the coupled method of DPM(discrete phase model) and Wall film model. The verification results show that the error was less than 1.1% for simulation and parameter results. Meanwhile, the influences were studied for three key structural parameters on heat-mass transfer performance. The results show that the heat transfer performance is improved between tube wall and spray water with the increase of longitudinal and transverse spacing of tube bundles. However, the mass transfer performance decreases of humid air-spray water with the increase of transverse spacing. Meanwhile, Nusselt number increases by 33.3% with the increase of longitudinal spacing from 30 to 70 mm, increases by 73.5% with the increase of transverse spacing from 10 to 50 mm. Besides, the heat transfer performance proves to be better when contact area increases between tube bundle and spray water with larger pipe diameter. At a certain transverse and longitudinal spacing, the lowest humid air temperature and highest enthalpy are located on the maximum pipe diameter (24 mm), and its decreasing and increasing degrees are 11.2% and 35.6%, respectively. The above results can provide a theoretical basis for optimizing the structure of staggered tube bundles and improving the heat-mass transfer efficiency.