溢洪道水流流场模拟及掺气减蚀研究OA

The probability of cavitation and erosion occurring during the operation of discharge structures is high,which is unfavorable for structural safety and stability.To explore the measures and their effectiveness of mitigating cavitation and erosion in spillways,hydraulic models were adopted to simulate the flow field of the aerated water flow in the spillway of a hydropower station project,and the scheme and effect of aerated erosion reduction were described in detail.The results show that,after adding the groove type aeration facilities according to the recommended scheme(Scheme 3),the water flow cavity area of the discharge groove increases,and the stability of the cavity is improved,that is conducive to mitigating the damage to the bottom plate caused by cavitation erosion and provides a better protective effect.