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本文采用 ASM紊流数学模型对水垫塘内高速强紊动水流进行了数值模拟。结合实验资料对底板动水荷载进行了验证 ;同时 ,统计和分析了水垫塘内的单位水体消能率 ,结果表明塘内水体消能大量集中在射流轴线附近 ,反映出水垫塘内真正参与消能的水体只占塘内水体的少部分 ;进一步统计分析了水垫塘的总消能量 ,与常规水力学计算的结果基本吻合 ,这也反映出采用紊流数学模型研究水垫塘内的水流紊动与消能是切实可行的。
In this paper, the ASM turbulence mathematical model is used to simulate the high-speed and highly turbulent flow in a plunge pool. At the same time, the energy dissipation rate of unit water in the plunge pool was calculated and analyzed. The results show that the energy dissipation in the plunge pool is concentrated in the vicinity of the jet axis, which shows that the water in the plunge pool really participates in energy dissipation. Only accounting for a small part of the water body in the pond; further statistical analysis of the total dissipated energy of the plunge pool basically agrees with the results of conventional hydraulics, which also reflects the use of turbulent mathematical model to study the turbulence and energy dissipation Is feasible.