古洞口二级消力池斜墙式消力坎优化布置

Optimization Layout of Inclined Wall Type Baffle of the Secondary Dissipation Pool in Gudongkou

为分析连续斜墙式消力坝的消能特性,以古洞口二级水利水电工程为例,通过RNG_(κ-ε)紊流模型结合VOF方法的两相流数值模拟方法,分析斜墙式消力坎坎高、倾角、位置与消能效率之间的关系。研究结果表明,斜墙式消力坎坎高为直墙式消力坎高度的1~1.29倍之间,消力坎倾角为60°~90°左右时,斜墙式消力坎消力池中消能充分,消能效率高。研究成果可为工程设计提供依据。

In order to analyze the energy dissipation characteristics of continuous inclined wall type energy dissipation dam, taking Gudongkou secondary level water conservancy and hydro-power project for an example, the relationship between the slanting wall height, dip angle, position and energy dissipation efficiency was analyzed through two-phase flow numerical simulation method of RNG ^-t turbulent model combined with the VOF method. The result shows that when the slanting wall canyon is about 1 to 1.29 times of the height of the straight wall,and the inclination angle of the inclined wall is about 60 ° to 90 °,power consumption of slanting wall canyon stilling basin is fully dissipated with high efficiency. The research provides the theoretical basis for future engineering design.