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| 侧风条件下不同十字隔墙高度对高位收水自然通风湿式冷却塔的影响 |
| Effect of different cross-partition wall heights on high-level water collection natural draft wet cooling towers under crosswind conditions |
| 投稿时间：2025-04-21 修订日期：2025-06-27 |
| DOI： |
| 中文关键词: 高位收水冷却塔，十字隔墙，数值模拟，冷却性能 |
| 英文关键词:high-level water collection cooling tower cross partition wall numerical simulation cooling performance |
| 基金项目:中国水利水电科学研究院基本科研业务费专项项目五大人才计划（HTHY0145B02202100000） |
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| 中文摘要: |
| 由于气流扭转和漩涡的形成，高位集水自然通风湿式冷却塔（HNDWCT）在侧风条件下的冷却性能仍然不理想。十字隔墙作为应对侧风的主要措施，有必要针对不同高度的十字隔墙对冷却性能的影响开展研究。本研究采用三维计算流体动力学方法，分析了在风速为 0 至 20 m/s、进风口角度（θ）为 0° 和 45° 的条件下，不同十字隔墙高度（比例=0、0.25、0.5、0.75、1）对 HNDWCT 冷却性能的影响。结果表明，在低风速条件下，十字隔墙高度对冷却性能的影响很小。在中高风速条件下，θ=0°的情况下，十字隔墙高度与冷却性能呈正相关，该工况下装配全高十字隔墙的案例冷却性能最好；θ=45°的情况下，十字隔墙高度与冷却性能呈负相关，该工况下未装配十字隔墙的案例冷却性能最好。在相同条件下，θ=0°情况下对应的冷却性能参数的变化幅度大于θ=45°情况下的变化幅度。这些研究结果为在 HNDWCT 中设计自适应高度的十字隔墙提供了可操作的理论指导，进而提高不同环境条件下的冷却性能。 |
| 英文摘要: |
| Abstract: The cooling performance of high-level water collection natural draft wet cooling towers (HNDWCTs) under crosswind conditions remains suboptimal due to airflow distortion and vortex formation. The cross-partition wall serves as the primary measure to mitigate the impact of crosswinds, and it is necessary to analyze the effect of different cross-partition wall heights on cooling performance. This study employs three-dimensional computational fluid dynamics to analyze the impact of varying cross-partition wall heights (ratio = 0, 0.25, 0.5, 0.75, 1) on the cooling performance of HNDWCTs under wind velocities ranging from 0 to 20 m/s and inlet angles (θ) of 0° or 45°. Results indicated that the effect of cross-partition wall height on cooling performance is minimal under low wind velocity. Under medium to high wind velocities, for cases with θ = 0°, the cross-partition wall height is positively correlated with cooling performance, and the case with a full-height cross-partition wall exhibits the best performance. For cases with θ = 45°, the cross-partition wall height is negatively correlated with cooling performance, and the case without a cross-partition wall demonstrates the best performance. Under identical conditions, the magnitude of change in cooling performance parameters for cases with θ = 0° is greater than that for cases with θ = 45°. These findings provide actionable guidelines for designing adaptive cross-partition walls in HNDWCTs to enhance cooling performance under variable environmental conditions. |
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