QQ客服 官方微博 反馈留言

	Effects of Tangential Velocity Distribution on Flow Stability in a Draft Tube
	DOU Huashu ; NIU Lin ; CAO Shuliang ; DOU Huashu ; NIU Lin ; CAO Shuliang
	2016-03-30 ; 2016-03-30
关键词	draft tube vortex characteristics numerical prediction velocity distribution O35
其他题名	Effects of Tangential Velocity Distribution on Flow Stability in a Draft Tube
中文摘要	Numerical simulations of the flow in the draft tube of a Francis turbine are carried out in order to elucidate the effects of tangential velocity on flow stability.Influence of the location of the maximum tangential velocity is explored considering the equality of the total energy at the inlet of the draft tube.It is found that the amplitude of the pressure fluctuation decreases when the location of the maximum of the tangential velocity moves from the centre to the wall on the cross section.Thus,the stability of the flow in the draft tube increases with the moving of the location of the maximum tangential velocity.However,the relative hydraulic loss increases and the recovery coefficient of the draft tube decreases slightly.; Numerical simulations of the flow in the draft tube of a Francis turbine are carried out in order to elucidate the effects of tangential velocity on flow stability.Influence of the location of the maximum tangential velocity is explored considering the equality of the total energy at the inlet of the draft tube.It is found that the amplitude of the pressure fluctuation decreases when the location of the maximum of the tangential velocity moves from the centre to the wall on the cross section.Thus,the stability of the flow in the draft tube increases with the moving of the location of the maximum tangential velocity.However,the relative hydraulic loss increases and the recovery coefficient of the draft tube decreases slightly.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144947]
专题	清华大学
推荐引用方式 GB/T 7714	DOU Huashu,NIU Lin,CAO Shuliang,et al. Effects of Tangential Velocity Distribution on Flow Stability in a Draft Tube[J],2016, 2016.
APA	DOU Huashu,NIU Lin,CAO Shuliang,DOU Huashu,NIU Lin,&CAO Shuliang.(2016).Effects of Tangential Velocity Distribution on Flow Stability in a Draft Tube..
MLA	DOU Huashu,et al."Effects of Tangential Velocity Distribution on Flow Stability in a Draft Tube".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。