[关键词]
[摘要]
跌坎型底流消能工消力池内的流态为淹没射流和淹没水跃的混合流态,为了解淹没射流区的水力特性,应用紊动射流理论,分析了淹没射流区主流的扩散规律、主流轴向最大时均速度的衰变规律。本文采用水力学试验方法,借鉴目前研究成果的基础上,开展了淹没射流区主流轴向最大时均速度衰变规律的研究。通过试验研究结果,推导出以入池角度为控制目标的跌坎型底流消能工淹没射流区主流轴向最大时均速度衰变的半经验公式。
[Key word]
[Abstract]
The flow pattern in the stilling basin of falling-sill bottom-flow energy dissipation was submerged jet and submerged jump mixing flow pattern. In order to understand hydraulic characteristics of the submerged jet region, the mainstream diffusion regularity of submerged jet area and the attenuation rule of mainstream axial maximum mean velocity was analyzed by applying plane turbulent jet theory. Based on the hydraulic model experiments, and the results of previous studies, the research on attenuation rule of the mainstream axial maximum mean velocity of submerged jet area was conducted. Based on the experimental research results, the Semi-empirical formula was deduced, in which the attenuation rule of mainstream axial maximum mean velocity of submerged jet area was controlled by the intake angle.
[中图分类号]
[基金项目]
国家自然科学基金(51169008)