涡的分离频率由激光干涉仪测量。
The frequency of vortex shedding was determined with a laser interferometer.
湿位涡对西南涡的斜压性加大有重要的贡献。
Wet potential vorticity had a great contribution to the stronger baroclinicity of the southwest vortex.
本文讨论了正方形截面水筒中直线涡的运动。
In this paper the motion of a straight vortex line in a water tunnel having a square cross section is discussed.
本文讨论了正方形截面水筒中直线涡的运动。
In this paper the motion of a straight vortex line in a water tunnel, which has a square cross section, is discussed.
只有你嵌着梨涡的笑容，才是我眼中最美的偶象。
西南风低空急流中心一般位于西南涡的东南象限。
The center of southwest low jet currently lay in the southeast quadrant of southwest vortex.
用文中描述的尾流分析方法研究了螺旋尖涡的运动。
The analytical method for predicting the hovering rotor wake is described to investigate the motion of the helical tip vortex.
导出了可压缩分离涡的破裂条件，并用于计算破裂位置。
The breakdown condition of the compressible separated vortex is derived and used to compute the breakdown place.
本文用涡动力学理论分析了锯齿形叶梢对螺旋桨的梢涡的影响。
The effect of the sawtooth shape tip on tip vortex of the propeller is studied with the theory of vortex dynamics in the paper.
分离空间内时均流场是外侧准自由涡与内侧准强制涡的典型结构。
In the separation space, the outer vortex can be approximately regarded as quasi-free vortex and inner vortex as quasi-forced vortex.
证明了自由涡的设计方法在现代先进涡轮设计中仍占有重要的地位。
It is verified that the design method of free vortex flow is still important in advanced turbine design.
这涉及到检测的频率上交替涡的下跌从一个迷身体受到流动的媒介。
This involves detecting the frequency at which alternating vortices are shed from a buff body hit by the flowing medium.
在小进距比的重载情况，螺旋桨尾涡的收缩对螺旋桨的性能影响较大。
In the case of heavy load when the advance ratio of propeller is small, the contraction of wake has large effect on the performance of the propeller.
尘卷风是一种类兰金涡，旋转速度和压力的分布具有兰金组合涡的特点；
For dust devils, the tangential velocity profile behaves like Rankine vortex, so it could be regarded as a kind of Rankine-like vortex.
此类东海波动快速生成是北支槽东移南下与南支槽结合产生低涡的结果。
The fast generation of this undulation over the east China Sea is the result of the depression, which was generated from the north trough moving southeasterly in conjunction with the south trough.
计算结果系统地显示了分离结构随雷诺数的变化情况及分离涡的空间结构。
The results reveal systematically the change of separation structures with Reynolds Number and the spatial forms of separation vortices.
通过对沉浮运动一个周期流线图的分析，认为这是翼型前缘涡的影响造成的。
An analysis of periodic flow streamlines shows that it is probably due to the effect of leading edge vortex.
由于前缘涡的影响，翼型厚度增加，平均压差阻力系数变小，甚至会出现负值。
As airfoil thickness is increased, the average pressure drag, affected by leading edge vortex is reduced even to be negative, and meanwhile friction has little increase.
模拟获得了三维潮流水平与垂直分布结构以及若干个潮致余流涡的水平分布状况。
The horizontal and vertical structures of tidal currents were obtained and the inter-tidal Eurlarian residual circulation was analyzed.
本文对水力旋流器中强制涡的形成，性质及作用等方面进行了较全面的深入探讨。
The formation mechanism and properties of forced vortex in a hydrocyclone and its influence on the performance of the cyclone are studied systematically and thoroughly in this paper.
迎角、旋成体的外形，尤其是头部的几何形状是细长前体出现非对称涡的关键因素。
Angle of attack and nose shape of bodies are key factors that asymmetric vortex occurs over slender bodies.
风暴完全并入西风槽后，变性后的温带气旋再次加强与平流层高位涡的向下输送有关。
After storm's entering westerly trough, the subtropical cyclone's reintensification was related to the high potential vortex's downward transmission from stratosphere.
采用差分方法计算旋涡流场，进而分析三角翼上前缘分离涡的运动特点及其破碎机理。
The vortex flow field is calculated with difference methods, and the motion characteristics and the bursting mechanism of the leading-edge separated vortices of delta wing are analyzed.
对流层高层或平流层低层高位涡的下传有利于位势不稳定能量的释放，使得暴雨增幅。
The tropopause folding, which means that high PV spreads downward from the upper troposphere or stratosphere, helps the releasing of potential instability energy and the development of rainstorm.
在的条件下，求出了某一类低涡的孤立波解，然后将它同一般低涡的孤立波解进行比较。
Under the condition of, solitary wave solution is obtained to a type of vortex, which is then compared with the one to the general vortex.
渐缩型间隙在叶片前半轴弦受到上通道涡的抑制，减少了叶顶间隙泄漏涡的强度和范围；
Suppressed by the up passage vortex at upstream side of blade, the intensity and scale of the tip clearance leakage vortex is decreased.
三种相位下的涡流场形态各有不同，上挥（下拍）初期前缘涡的运动主要存在两种形态。
The flow fields are different for the three phase motion patterns and there are two types of leading-edge vortex motion at an earlier stage of upstroke or downstroke.
测量得到了三个不同周向位置下的涡量图和速度矢量图，并观测到了叶顶泄漏涡的涡旋结构。
The velocity vector and vortical contour in three different circumference positions were successfully acquired and the structure of the tip leakage vortex was clearly illustrated.
主要结论如下：(1)北半球及各分区极涡的面积、强度及位置有着很明显的年际及年代际变化。
The main results show as following: (1) There is obvious inter-annual and inter-decadal variation for polar vortex, including the variation of area, intensity and location.
主要结论如下：(1)北半球及各分区极涡的面积、强度及位置有着很明显的年际及年代际变化。
The main results show as following: (1) There is obvious inter-annual and inter-decadal variation for polar vortex, including the variation of area, intensity and location.
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