摘要
为了从微观角度探究梯形转叶螺旋流消能装置的消能机理、验证其结构设计的合理性及不同参数对装置消能效果的影响,基于试验研究,运用Fluent软件进行三维螺旋流数值模拟。结果表明,数值模拟显示的消能机理与试验结果相吻合;装置消能的主力区在转叶孔板组合后,且装置的结构设计合理;转叶螺旋流消能装置的消能效果优于同类孔板射流装置的消能效果;在一定条件下,装置的消能效率与雷诺数和扭转角度均呈正比,而与开口角度呈反比。该结论为梯形转叶螺旋流消能装置的消能过程研究提供了依据,也为其结构优化和实际应用提供了理论支持。
In order to explore the energy dissipation mechanism of the trapezoid rotary vane spiral flow energy dissipation device,and verify its structure rationality and the effect of energy dissipation under different parameters from the microscopic aspect,the Fluent software was used to conduct a numerical simulation of 3Dspiral flow on the basis of the device＇s test study.The results show that the energy dissipation mechanism obtained by numerical simulation coincides with test results;the main area of energy dissipation device is in the back of the combined orifice plate and the structure design of the device is reasonable;the energy dissipation effect of the rotary vane spiral flow energy dissipation device is superior to that of the same kind orifice jet device;the energy dissipation efficiency of the device is directly proportional to the Reynolds number and the torsion angles,and inversely proportional to the opening angles under the certain conditions.The conclusions not only can provide the basis for study of the energy dissipation process of the trapezoid rotary vane spiral flow energy dissipation device,but also provide theoretical support for the structure optimization and application of the device.
出处
《水电能源科学》
北大核心
2016年第4期63-66,5,共5页
Water Resources and Power
基金
国家自然科学基金项目(50579044)
关键词
梯形转叶螺旋流消能装置
流速数值模拟
水流流线图
流速矢量图
流速分布图
消能效率
trapezoid rotary vane spiral flow energy dissipation device
flow velocity numerical simulation
water streamline diagrams
flow velocity vector diagrams
velocity distribution features diagrams
energy dissipation efficiency
