长江科学院院报Issue(2)：53-57,5.DOI:10.3969/j.issn.1001-5485.2015.02.012
挑流水舌泄洪雾化源形成过程研究
Formation of Atomization Source Caused by Flood Discharge Flow Nappe
摘要
Abstract
The heavy rainfall and mist flow induced by flood discharge atomization of high dam projects may have negative effect on the hydropower project and its surrounding environment.Researchers have done much work on its influence region and rainfall intensity distribution on the downstream banks.Because of the complexity of this phe-nomenon,the formation mechanism of the flood discharge atomization is still not well revealed.Using high speed video technique in simplified hydraulic model tests,we observed the formation process of flood discharge atomiza-tion when a deflecting flow nappe drops into the downstream pool in different hydraulic conditions.We especially focused on the movement of the flow nappe and surface water around the drop area,and then analysed the compo-nents of different sources and their features.We obtain that the flood discharge atomization source could be divided into two types:dropping caused by the instability and aeration of nappe,and splashing caused by the collision be-tween nappe and downstream water.Specially,the formation of the splashing atomization source is closely related with the periodical formation and dissipation of water surface bulges in the nappe drop area.关键词
泄洪雾化/抛洒雾源/挑流水舌/落水区/激溅雾源Key words
flood discharge atomization/atomization source caused by nappe drop/jet nappe/drop area/nappe splash分类
建筑与水利引用本文复制引用
王思莹,刘向北,陈端..挑流水舌泄洪雾化源形成过程研究[J].长江科学院院报,2015,(2):53-57,5.基金项目
国家自然科学基金青年基金项目（51109012）；水利部公益性行业科研专项经费项目 （）
