通过实验研究提出了观察植物叶迹、叶隙立体结构的方法。
The article proposes the experimental method of observing the spatial structure of plants leaf trace and leaf crack.
茎的初生结构中多个维管束排列成环状，节部为单隙三迹，叶迹分别来自于3条维管束或同一条维管束。
The vascular bundles of the primary structure in stem are ring arranged, and the node is unilacunar and 3-traced, which is from three vascular bundles or one vascular bundle.
基于小型轴流压气机实验台，运用热线风速仪(HWA)，对不同转速、流量工况下，静叶排出口尾迹流动特性进行实验研究。
An experimental study of the stator blade wake in a small axial compressor is performed by using a hotwire anemometer (HWA) under different rotating speeds and mass flow conditions.
动叶尾迹强度明显减弱，叶背流动分离得到抑制，叶尖泄漏涡也得到了周期性的抑制。
The intensity of rotor wakes was reduced, flow separation on rotor suction side was suppressed and the tip leakage flow was suppressed periodically.
考虑了叶栅尾迹的影响。
利用数值计算的方法研究了非定常尾迹对动叶气膜冷却效率的影响。
Numerical calculations were performed to investigate the effects of unsteady wakes on film cooling.
串列叶栅的尾迹平均速度和紊流脉动速度沿额线方向比单列叶栅变化平缓。
Behind the tandem cascades, the variations of mean velocity and turbulence intensity along the tangential direction become more gentle than that behind the single-row cascade.
此外上游静子尾迹以及动叶尾缘出口膨胀波等也是产生转子叶片表面非定常力的因素。
In addition, the wake interaction of upstream blade row and the expansion wave at rotor exit also cause an unsteady force acting on the downstream rotor blade surface.
由转子尾迹特征参数和紊流度可以求出旋转叶栅损失，为修改设计提供参考依据。
The losses of the rotating cascade determined by the parameters of rotor wakes and the turbulence levels could be used in the design modification.
在高速流动条件下，叶栅损失主要是吸力面边界层径向串流及其尾迹。
Under high velocity flow conditions, cascade losses are mainly caused by radial drift of the boundary layer along the suction surface and by blade wakes.
设计状态转子出口流动阻塞、损失、高水平紊流脉动及噪声主要发生在叶尖通道中部、尾迹和叶根吸力面角区；
In design condition, the flow blockage, loss, turbulence and noise at the exit focus mainly in the tip mid-passage, wake and the corner between the hub and the suction surface;
设计状态转子出口流动阻塞、损失、高水平紊流脉动及噪声主要发生在叶尖通道中部、尾迹和叶根吸力面角区；
In design condition, the flow blockage, loss, turbulence and noise at the exit focus mainly in the tip mid-passage, wake and the corner between the hub and the suction surface;
应用推荐