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- This blade can be used to produce counter pressure gradient at cascade passage end,reduce secondary flow loss,increase the efficiency of IP casing consequently,and improve the heat rate of units. 应用该叶片能使叶栅通道端部产生逆压力梯度,减少二次流损失,提高中压缸的流动效率,降低整机热耗。
- A new measure to reduce the secondary flow loss of the stator cascade of steam turbine governing stage by means of the boundary, layer suction near the suction side of endwall is presented. 提出一种在调节级静叶栅叶片吸力面侧端壁处抽吸低能流体至轴封漏汽腔室，以降低静叶栅二次流损失的方法。
- Abstract： A new measure to reduce the secondary flow loss of the stator cascade of steam turbine governing stage by means of the boundary, layer suction near the suction side of endwall is presented. 摘 要： 提出一种在调节级静叶栅叶片吸力面侧端壁处抽吸低能流体至轴封漏汽腔室，以降低静叶栅二次流损失的方法。
- The nozzle cascade was designed for a Curtis stage using an advanced after-loaded flow control technique to reduce secondary flow losses. 该复速级喷嘴叶栅采用先进的后加载流动控制技术 ,以减弱叶栅的二次流损失。
- secondary flow loss 二次流损失
- Secondary flow measurements and flow losses near the endwall of linear turbine cascade 涡轮平面叶栅端壁附近的流动和损失
- Effects of blade negative bowing on secondary flow, total pressure loss and outlet flow angle were analyzed quantitatively, mechanism of the effects was discussed as well. 定量地分析了叶片反弯曲对叶栅出口二次流、总压损失和气流角的影响，并探讨了叶片反弯曲作用的机理。
- The affect of endwall fences at different locations on compressor cascade loss and secondary flow were investigated through detailed experimental investigation in a low speed wind tunnel. 在低速大尺寸叶栅风洞上通过详细测量叶栅流场,研究了叶栅端壁上不同周向位置处加装端壁翼刀对压气机叶栅损失和二次流的影响。
- The secondary flow and vortexes are also produced in the dimple, but the influence of thesein the channel is small. 在窄缝流道的丁胞内同样会生成二次流、纵向涡旋和横向对涡,但其对主流区的影响较小;
- The effect of curvature, torsion and Dean number on secondary flow is discussed. 讨论了曲率、挠率、Dean数对二次流动的影响。
- In CO2 low temperature part cycle, the viscosity of CO2 refrigerant has less effect on the flow loss in pipeline as the decreasing of temperature. CO2低温循环中，随着温度的降低，制冷工质的粘性对管路的流动阻力损失影响不大。
- Large spanwise heat transfer variation exists for stationary case due to the rib induced secondary flow. 肋片二次流使得通道各带肋面换热产生了巨大的差异。
- The details of the flow fields such as the backflow, vortex and secondary flow were revealed. 揭示了导叶内部回流、漩涡,以及出口流动滞止区、二次流等流动细节;
- Theexperimental results show that there are s trong secondary flow and a complex series of vortices in turbine cascade. 实验结果表明：涡轮叶栅中有强烈的二次流动，并存在复杂的涡系；
- The numerical simulation technique is used to investigating the secondary flow in the different swept height blade cascades of a turbine last stage. 采用数值模拟技术详细地研究了不同掠高的某蒸汽轮机末级前掠叶片叶栅内部的二次流动。
- The results show that the secondary flow appears in the flow of the power-law fluid in annulus with the inner cylinder executing a planetary motion. 结果表明:幂律流体在内管做行星运动的环空中流动时出现二次流,且二次流分布与环空内管公转、自转速度的方向和大小以及环空偏心距有关。
- secondary flows losses 二次流损失
- This article corrected theoretical characteristics of the pump, put forward characteristic eguation of practical pump and calculating fromula of flow loss based on hte Euler equation. 在欧拉方程基础上;对泵的理论特性进行了修正;并提出实际泵的特性方程及流量损失的计算公式.
- Particular attention was given to how Coriolis force and buoyancy force interact with rib induced secondary flow and their influences on heat transfer. 在径向入流通道中，哥氏力推动主流型向前缘偏移，但浮升力则使得主流型更加平缓。
- The test method of pressure loss,flow loss and frictional force loss etc.of the hydraulic pumping units is presented,from which the mechanical efficiency and volumetric efficiency are obtained. 给出了测取液压抽油机系统压力损失、流量损失以及油缸的摩擦力损失等的方法,并由此求出系统的机械效率与容积效率。
