泵闸联合体中双向引排水泵站进水系统的水力优化研究OA
Hydraulic Optimization of Inflow System of Bidirectional Drainage Pumping Station in Pump-sluice Complex Engineering
为了改善侧向进流式泵站前池内的绕流和回流等不良流态,基于RNG k-ε模型对泵闸联合体泵站运行的流态进行数值模拟,提出适用于侧向收缩进流式泵站前池的整流措施.数值计算结果表明:泵站前池内存在由于侧向收缩引起的绕流,并向下旋流在进水池内形成回流,致使泵站边机组流道的轴向流速均匀度较低,进流条件不佳.在进流收缩区布设导流墩可有效改善绕流现象,抑制回流形成,提高进流均匀性;通过对导流墩长度进行优化,并采取水工模型试验验证了优化方案的整流效果.研究成果可为泵闸联合体侧向收缩进流式泵站进水系统的流态分析和水力优化提供技术参考.
To improve the adverse flow pattern such as circling and recirculation in the lateral forebay of the lateral inflow pumping station,numerous simulations of the flow during the operation of the pumping station in the pump-sluice complex engineering were conducted based on the RNG k-ε model,and the rectification measures for the lateral forebay of the lateral contraction inflow pumping station were proposed.The numerical results indicate that:the circling flow occurred in the forebay due to the effect of lateral contraction,resulting in recirculation flow forming in the suction sump due to the combination of circling flow and downward swirling flow.This leads to a lower axial-flow uniformity in the flow channels of the pumping station,indicating a poor inflow condition.Diversion piers in the inflow contraction area can effectively improve the flow pattern,inhibit the formation of recirculation flow,and increase the uniformity of inflow.The length of the diversion pier was optimized and the rectification of the optimized scheme was verified by the hydraulic model test.The research results can provide technical references for the flow analysis and optimization of the lateral inflow system of the pumping station in the pump-sluice complex engineering.
肖志乔;费照丹;钱尚拓
上海浦河工程设计有限公司,上海 200333河海大学水科学研究院,江苏 南京 211100河海大学农业科学与工程学院,江苏 南京 211100
水利科学
泵闸联合体泵站进水系统水力优化计算流体力学水工模型试验
pump-sluice complex engineeringinflow system of the pumping stationhydraulic optimizationcomputational fluid dynamicshydraulic model test
《人民珠江》 2024 (006)
65-72 / 8
江苏省创新支撑计划国际科技合作项目(BZ2023047);江苏省自然科学基金(BK20231462);中央高校基本科研业务费项目(B240201055)
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