该方法适用于具有强旋转流动涡量的测量。
The method is applicable for measuring vorticity of a strong rotational flow.
根据涡管定义，穿过涡管管壁的涡量为零。
The flux through the wall of the vortex tube is zero by its definition.
涡量场特性可以用涡线非常形象地表达出来。
The characteristics of vortex field can be described visually by vortex line.
小分隔屏的存在对其后的速度场及涡量场有明显的影响。
The presence of a partition panel has a significant effect on the velocity and vorticity field behind it. The test results indicate …
小分隔屏的存在对其后的速度场及涡量场有明显的影响。
The presence of a partition panel has a significant effect on the velocity and vorticity field behind it. The test results indicate that a separation vortex…
以截面法向涡量为基础，可求解得到与涡量对应的二次流速度场。
Secondary flow velocity can be obtained with respect to cross suction normal vorticity.
理论分析证明，流体力学中无粘亥姆霍兹涡量方程可以实现图像修复。
Based on theoretical analysis, inviscid Helmholtz vorticity equation is used to in paint image.
采用流函数-涡量法对粘性不可压缩流体的二维瞬态流动进行模拟计算。
The stream function-vorticity method has been used to simulate two-dimensional transient state of incompressible viscous flow.
本文计算了各种条件下绕圆柱的阻力系数、流函数涡量分布以及扰动流函数等。
The drag coefficient, the stream function and vorticity, the perturbed stream function are calculated under various conditions.
结果表明，静子尾迹的非定常作用一定程度减小了转子轮毂二次流的径向涡量；
The results indicate that periodic stator wakes can reduce the radial vorticity of hub passage vortex.
同时，分流射流横向扩展继续为螺旋柱状旋涡提供足够的涡量，使其稳定旋转。
Next, the belieal columnar vortex get enough the vorticity supplied by the crosswise spread of the secondary jet flow to rotate stably.
从涡量输运方程出发，分析得出拉伸项的存在降低了轴对称热羽流的混合强度。
The stretching term in the vorticity transport equation is found to be the main mechanism to reduce the degree of mixing in axisymmetric plume.
绘制了速度矢量分布图，和流函数，涡量，两个分速度及压强的等值线分布图。
The diagram of distribution of speed arrow, constant lines of flow-stream function, vortex, two speed parts and pressure were studied.
本文提出了一种新的处理涡量边界条件的方法，并且应用了高阶精度的差分格式。
In this paper, the author advances a new method for handling the vorticity boundary condition and USES the higher order accurate schemes to solve the steam function-vorticity equation.
计算所得的流线图，涡量分布以及雷诺应力分布具有与实验结果相似的分布规律。
Also the theoretical results of Reynolds Stress variation show good agreement with experimental results.
利用非定常流函数涡量方程数值模拟圆柱突然起动尾流涡旋的形成及周期性脱落过程。
The unsteady equations of stream and vorticity functions were used for numerical simulation on the process of the vortex formation and periodic shedding from an impulsively started circular cylinder.
振荡频率决定着涡量聚集区域的位置和大小，振幅决定着涡量分配和聚集的均匀程度。
The frequency determines the location and scale of vortices assembling region, and the swing determines uniform degree of distributed and assembled vortices.
计算结果表明，漏流涡对叶片气弹稳定性影响较大，大涡量的漏流涡能抑制叶片颤振发生。
The results show that the tip leakage flow vortex has a great effect on the blade aeroelastical stability and large tip leakage vorticity may restrain blade flutter.
以平均涡量作为液体的离散化变量，导出解析形式稳定性判据，并用于讨论充液自旋弹丸。
The average vortex is used as a discretized variable of the liquid. A stability criterion in analytic form is derived and used to discuss the spinning projectile containing liquid charge.
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.
结果表明，由于射流的卷吸及其与环境流体之间的相互作用，使得射流边界处具有很高的涡量；
It has shown from the experimental results that the vorticity near the jet boundary region is high in magnitude due to the interaction between the jet fluid and the entrained ambient fluid.
本文从对几种建筑物模式的风环境进行数值模拟出发，给出了几种常见建筑模式的流场和涡量场。
The wind environment of some building models numerically simulated and the stream and vortex fields of the flow around some common buildings are given.
定量比较了流场不同断面的流向速度平均值、脉动强度、混合层的动量厚度及涡量厚度等流动量。
The DNS results are compared with the classic experimental results of Lasheras et al on the plane mixing layer.
为克服传统涡量测量方法的缺点，提出了从代表流体运动的粒子图像中直接测量涡量(DMV)的方法。
For overcoming the shortcomings of conventional methods for vorticity measurement, a new direct measurement of vorticity (DMV) method extracting vorticity from particle images was proposed.
实验结果表明，燃烧器区射流一出口就出现了贴壁，燃烧区及燃尽区壁面附近涡量强度和湍动度都很高。
The results of an experimental investigation indicate that there emerges a wall attachment phenomenon as soon as the jet flow at the burner zone reaches its outlet. Furt...
由于取消了“扰动胀量为零”的假设，需要耦合求解扰动质量方程、扰动涡量输运方程和扰动能量输运方程。
Since the disturbance expansion has been taken into account, one has to solve the mass, vorticity transport and energy transport equations for disturbance motion in a coupled way.
本文通过运动学分析，得到了涡量与二次流之间的关系方程，介绍了弯曲流道内二次流结构的可视化新方法。
The equation between secondary flow and vorticity is established through kinematic analysis. One new method of digital visualization for secondary flow in curved passage is presented.
作用在任意运动物体（系）上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。
The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.
风洞实验采用PIV测量了沿流向下游不同截面的涡量场和速度场，测量截面距机翼后缘最远达到20倍弦长。
Wind tunnel measurement gives the velocity field and vorticity field in intersection plane at different downstream position, which is up to 20 times cord-length.
风洞实验采用PIV测量了沿流向下游不同截面的涡量场和速度场，测量截面距机翼后缘最远达到20倍弦长。
Wind tunnel measurement gives the velocity field and vorticity field in intersection plane at different downstream position, which is up to 20 times cord-length.
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