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- A negative bowed blade increases the flow separation and the flow performance is reduced remarkably. 反弯则使得叶栅内分离趋势增加,气动性能明显降低。
- A flow-separating calibrator was developed,which is mainly composed of three systems: XHV,UHV and flow separation. 分流法超高/极高真空校准装置由极高真空(XHV)系统、超高真空(UHV)系统、流量分流系统三部分组成。
- Based on the Fourier analysis, the basic theory of base flow separation using digital filter is presented. 摘要在傅里叶分析的基础上,阐述了数字滤波分割基流的基本原理;
- The streamwise turbulence intensity and Reynolds shear stress levels augment largely in the regions of flow separation. 流线方向的紊流强度与雷诺剪应力值在流场分离区呈显著增加;
- It is permissible, however, to postulate that the effect of viscosity is confined to a thin boundary layer (except where flow separation occurs). 然而,可以假定,粘性影响只局限在一层薄薄的附面层之内(流动发生分离的情况除外)。
- Base flow separation method and isotope technique were adopted to study the cyclic relationship between river water and groundwater. 通过基流分割计算和同位素技术的应用,研究了区内地下水和地表水之间的水循环规律及地下水对黄河的贡献。
- Controlling flow separation with blowing-slot was simulated numerically on a 2-D cascade in collaboration with boundary vorticity flux (BVF). 摘要结合边界涡量流(BVF),对叶片开缝吹气的方法控制扩压叶栅流动分离进行了数值模拟。
- Numerical simulations of laminar flow separation and reattachment occurred in an annular backstep passage are performed by the SIMPLER algorithm. 用SIMPLER算法对流过环形后台阶通道内的层流分离和再附着进行了数值模拟。
- You, D. and Moin, P, "Large Eddy Simulation of Flow Separation over an Airfoil with Synthetic Jet Control," Center for Turbulence Research Annual Research Briefs, 2006. 洪国泰,”小型轴流风扇设计以及模拟与实验之整合研究”,台湾科技大学机械工程研究所硕士论文,2007年。
- You, D. and Moin, P, “Large Eddy Simulation of Flow Separation over an Airfoil with Synthetic Jet Control,” Center for Turbulence Research Annual Research Briefs, 2006. 罗际航,“具不同翼型叶片的水平式风力机之数值模拟”,台湾科技大学机械工程研究所硕士论文,2006年。
- Futhermore, the hydrological calculation procedure, such as flow separation with beeline slanting cut and ascertaining frequency year should be introd... 最后以涪江流域为例,说明应用是有效的。
- In some of the experimental runs, however, phenomena such as flow separation and sand face breaching are observed, which exceed the current scope of the proposed theory. 虽然模式得以验证水射之于输砂具薄层流及水跃行为,经由实验观察,移动式水射所造成之沟渠流仍有可能发生超出模式之分离流等。
- Flow separation was observed on the expansion ramp at Mach 2.5.To improve off-design performance of single expansion ramp nozzles,variable geometry nozzle configuration should be adopted. 在马赫数2.;5时;喷管膨胀面气流已发生明显分离;喷管性能急剧恶化。 为了提高低马赫数条件下单膨胀斜面喷管的性能;采用变几何结构(调节下斜板角度)或基于二次流控制的单膨胀斜面喷管是必须的。
- It is found that the vortex structures include the Kelvin?like vortexes in shear?layer of jet, the cross?flow separation vortex pair, the horseshoe vortex system in upstream bottom region of jet and the wake vortexes. 发现主要有4类旋涡,即射流主体周缘剪切层的类开尔文涡列、横流绕流分离旋涡、射流喷口前缘的马蹄涡系和尾迹涡。
- However, for little submergence the flow separates at aft-dome and a weak vortex forms in the rear of the cavity. 而潜入深度小的喷管,分离点会后移至后封头上,在背壁区后部形成弱旋涡。
- A novel technique has been successfully developed to calibrate the ultra high vacuum(UHV) and extra high vacuum(XHV),which consists of XHV/UHV chambers,a flow separation and a gas supply. 超高/极高真空校准装置由极高真空(XHV)系统、超高真空(UHV)系统、流量分流系统和供气系统四部分组成。
- Blade profiles, blade numbers, cord of the blade, and the straight line extension of the trailing edge were simulated numerically for the return channel blades in an attempt to avoid flow separation. 采用修改回流器叶型、增加叶片数目、增加叶片长度、修改叶片尾部型线为直线等方法消除了回流器叶片的分离与回流。
- Results Separation of intimae was the most reliable criteria for diagnosis.The phenomenon of blood flow separation,artery dilation,intra-luminal thrombosis and so on were able to assist its diagnosis. 结果内膜分离是本病最可靠的诊断依据,血流分隔现象、动脉扩张和管腔内血栓等具有重要的辅助诊断价值。
- The flow separation and great range low energy flow occur at the 10% span range of second rotor blade tip near stall point firstly, which was the main reason for the compressor stall. 在近失速点压气机第二排转子叶片吸力面近尖部10%25叶展范围内,最先出现导致叶片失速的大范围分离和低能堵塞团;
- A free flow of water came from the pipe. 水从管道里通畅地流了出来。