闸坝式枢纽工程闸前导水墙体形优化研究
发布时间：2018-11-15 16:37
【摘要】：闸坝式枢纽工程边界条件在库区到闸室段突然收缩,闸室过流单宽流量大、水头高,闸前进水口处易出现水流流态差和间歇性吸气漩涡等问题。为研究并选用合理的导水墙体形,分析闸前进水口处水流流态、流线分布、表面流速、漩涡分布及横向水位差等水力条件,采用数值模拟分析方法,对某闸坝式枢纽工程闸前导水墙体型布置方案进行优化,并用物理模型试验进行验证分析。结果表明优化方案在闸前近坝区束窄河床的导水墙体形布置,可有效改善进水口水流流态,减小闸前水流横向流速,并消除了间歇性吸气漩涡。
[Abstract]:The boundary condition of sluice dam junction project suddenly shrinks from the reservoir area to the sluice chamber section, the single wide flow through the gate chamber is large, the water head is high, the water flow state is poor and the intermittent inspiratory vortex is easy to occur at the inlet of the sluice gate. In order to study and select reasonable hydraulic conditions such as water flow state, streamline distribution, surface velocity, swirl distribution and lateral water level difference at the inlet of sluice, a numerical simulation analysis method is used. This paper optimizes the layout scheme of sluice front water wall in a gate and dam type project, and verifies and analyzes it by physical model test. The results show that the optimization scheme can effectively improve the flow pattern of the inlet water flow, reduce the transverse velocity of the water flow in front of the sluice, and eliminate the intermittent suction vortex in the shape of the guiding wall of the narrow channel bed near the dam in front of the sluice.
【作者单位】： 四川大学水力学与山区河流开发保护国家重点实验室;四川省冶金设计研究院;
【分类号】：TV661
本文编号：2333829
[Abstract]:The boundary condition of sluice dam junction project suddenly shrinks from the reservoir area to the sluice chamber section, the single wide flow through the gate chamber is large, the water head is high, the water flow state is poor and the intermittent inspiratory vortex is easy to occur at the inlet of the sluice gate. In order to study and select reasonable hydraulic conditions such as water flow state, streamline distribution, surface velocity, swirl distribution and lateral water level difference at the inlet of sluice, a numerical simulation analysis method is used. This paper optimizes the layout scheme of sluice front water wall in a gate and dam type project, and verifies and analyzes it by physical model test. The results show that the optimization scheme can effectively improve the flow pattern of the inlet water flow, reduce the transverse velocity of the water flow in front of the sluice, and eliminate the intermittent suction vortex in the shape of the guiding wall of the narrow channel bed near the dam in front of the sluice.
【作者单位】： 四川大学水力学与山区河流开发保护国家重点实验室;四川省冶金设计研究院;
【分类号】：TV661
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