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针对高水头大流量泄洪洞内易发生严重的空化空蚀破坏问题,采用三维RNGκ-ε双方程紊流模型对某工程右岸泄洪洞紊流流场进行数值模拟,分析了泄洪洞内水—气两相分布、洞顶余幅、压强分布、空化数分布等水力特性,判断泄洪洞内易发生空蚀破坏的潜在危险位置,根据数值模拟计算结果设计泄洪洞安全监测布置方案,并构建泄洪洞安全监测及预警指标体系,划分泄洪洞安全状态等级,有助于推进实际工程中泄洪洞的实时安全监测及预警工作。
Aiming at the serious cavitation erosion damage in high head and large discharge spillway tunnel, the turbulent flow field in the right bank of a project is numerically simulated by three-dimensional RNG κ-ε turbulent flow model. The effects of water- The distribution of gas phase, the residual amplitude of the top of the tunnel, the pressure distribution and the distribution of cavitation number, etc. to determine the potentially dangerous locations prone to cavitation erosion in the spillway tunnel. According to the numerical simulation results, the layout of the safety monitoring layout of the spillway tunnel is designed and constructed Flood discharge tunnel safety monitoring and early warning indicator system, the division of flood discharge tunnel safety status rating helps to promote the actual project of flood discharge tunnel real-time safety monitoring and early warning.