水利水电技术2018，Vol.49Issue(1)：102-107,6.DOI:10.13928/j.cnki.wrahe.2018.01.015
波浪对蘑菇头式取水口吸气漩涡流态影响的试验研究
Experiment study of wave effect on flow pattern of air-core vortex at mushroom-shape water intake
摘要
Abstract
The effect from wave on the flow pattern at the inlet of the offshore water intake is obvious,however,there is lack of systematical study on the law of the air-core vortex at the water intake under the effect of wave at present,and then how to prevent the occurrence of harmful air-core vortex in front of water intake is a problem to be urgently solved during the design of the water intake.By taking the water intake of a coastal power plant as the study case,the inflow pattern and the air-core vortex characteristics at the mushroom-shape water intake under the effect of wave are studied through the relevant physical model experiment,and then the minimum submerged depth necessary for preventing the entrance of air into the water intake under the effect of wave is analyzed as well.The experiment result shows that wave can restrain the formation of stable air-core vortexes around the water intake.When the submerged depth is insufficient,the intermittent air entrance of air into the mushroom water intake is to occur along with the wave cycle,but the amount of air entrance is less than that from the water level of the continuous wave trough.In the aspect of preventing harmful air-core vortex,the existence of wave can lower the value of the critical submerged depth,while the specified formula (Gordon formula) for the submerged depth can be revised and used in the design practice concerned,for which the values of the revising coefficients are necessary to be taken in accordance with the wave elements and the structural patterns of water intake.The study result can provide references for the design of the similar project.关键词
进水口/表面吸气漩涡/波浪/淹没深度/蘑菇头式取水口Key words
water intake/surface air-core vortex/wave/submerged depth/mushroom shape intake分类
信息技术与安全科学引用本文复制引用
段亚飞,刘赞强,张强,纪平..波浪对蘑菇头式取水口吸气漩涡流态影响的试验研究[J].水利水电技术,2018,49(1):102-107,6.基金项目
国家自然科学基金“紊流—泥沙协同作用下放射性核素输运的机理和数值模拟研究”(51409272) （51409272）
国家重点研发计划“梯级高坝大库水温结构变化的生态影响和分层取水技术”(2016YFC050220) （2016YFC050220）
