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<p>To evaluate the structural safety of Water Collection Troughs (WCTs) in high-level water collection cooling towers under extreme wind conditions, wind tunnel tests were conducted on a 1:363 geometrically scaled WCT model. The internal and bottom pressure distributions were measured under various wind directions, and the upward and horizontal wind-induced pressures of the full-scale prototype were determined based on the measured pressure difference coefficients. Results indicate that without windbreak partition walls, ambient wind exhibits negligible influence on the internal pressure difference coefficients but strongly modulates the bottom pressure distribution, yielding a maximum pressure difference coefficients of 0.45. In contrast, substantial alterations in pressure characteristics were observed following the installation of windbreak partition walls, with the peak coefficient rising to 0.68 (a 51% increase). Under the extreme design wind speed of 46&#xa0;m/s, the maximum upward and horizontal wind-induced pressures reach 2100&#xa0;Pa and 850&#xa0;Pa, respectively. For applications in extreme wind regions, the structural integrity of the WCTs and their connections should be thoroughly verified during the design phase. Results from scaled model tests, at lower Reynolds numbers than the prototype but within the drag square-law region with Reynolds-independent aerodynamics, primarily apply to similar tower configurations; field validation is recommended for distinct geometries or extreme wind assessments.</p>

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Safety analysis of water collection troughs in cooling towers based on wind tunnel tests

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月22日

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  • Qing Zhu,
  • Lujun Li,
  • Xiaojun Song

摘要

To evaluate the structural safety of Water Collection Troughs (WCTs) in high-level water collection cooling towers under extreme wind conditions, wind tunnel tests were conducted on a 1:363 geometrically scaled WCT model. The internal and bottom pressure distributions were measured under various wind directions, and the upward and horizontal wind-induced pressures of the full-scale prototype were determined based on the measured pressure difference coefficients. Results indicate that without windbreak partition walls, ambient wind exhibits negligible influence on the internal pressure difference coefficients but strongly modulates the bottom pressure distribution, yielding a maximum pressure difference coefficients of 0.45. In contrast, substantial alterations in pressure characteristics were observed following the installation of windbreak partition walls, with the peak coefficient rising to 0.68 (a 51% increase). Under the extreme design wind speed of 46 m/s, the maximum upward and horizontal wind-induced pressures reach 2100 Pa and 850 Pa, respectively. For applications in extreme wind regions, the structural integrity of the WCTs and their connections should be thoroughly verified during the design phase. Results from scaled model tests, at lower Reynolds numbers than the prototype but within the drag square-law region with Reynolds-independent aerodynamics, primarily apply to similar tower configurations; field validation is recommended for distinct geometries or extreme wind assessments.