对流层低层干位涡场特征表现为，风暴区形成干位涡等值线密集区和风场切变的耦合。
The dry PV field in the lower troposphere shows that the coupling of the dense PV isoline zone and the wind shear was formed in the storm area.
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.
模式模拟结果展现了南海流场的季节特征，在模式分辨率下表现出了多涡结构。
The simulated results show the seasonal characteristics and multi-eddy structure of the South China Sea current field.
结果表明：大涡模拟技术可以得到发动机内湍流流场中详细拟序结构，时均湍流模拟对于火箭发动机内流场时均量的模拟仍有较好的工程精度。
It was shown that the detail construction of turbulence in rocket can be predicted by LES, and the time-averaged method also can give the result with satisfiable engineering precision.
利用涡结构对光波通过高速流场的光学传输特性进行建模，就必须进行涡结构的识别。
It's necessary to recognize the different vortices, when aero-optical distortion caused by hypersonic flow is studied using vortex structure as the turbulence model.
采用离散涡方法对平面射流流场进行了数值模拟。
The flow field of planar jet is simulated by discrete vortex method.
根据流体力学原理，用离散涡方法建立了在复平面上模拟喷嘴出口流场的一套完整模型。
On the basis of fluid mechanics, a comprehensive model for simulating flow field at nozzle exit is developed by using desecrate vortex method.
计算的相对涡强度、入口校正和文献中的结果基本一致，给出的流场也显示出计算结果是合理的。
The relative vortex intensity and the entrance correction obtained here agree with the results reported in the literatures, and the flow fields are also reasonable.
本文对后台阶分离流动中涡结构的演变进行了大涡模拟，研究了流场结构的变化规律。
In this paper, the evolution of eddy structures in the backward-facing step flow was studied by using large eddy simulation.
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.
利用附加的小辅助件，改变翼面上方的流场，使机翼前缘肌体涡推迟破裂。
The leading edge vortex breakdown can be delayed using supplements to change the flow field over upper surface of the wing.
构造了三维混合层流场用离散涡丝描述的计算模型并进行了数值模拟。
A model of computation for three-dimensional mixing layers described by discrete vortex filaments is built.
为证实这一现象，我们通过对中尺度暖涡流场结构分析，提出了中尺度暖涡诱导陆架上升流的必然性。
The structure of mesoscale warm eddy was analyzed in order to verify this phenomenon. The necessity of shelf upwelling induced by mesoscale eddies was thus confirmed.
结合探针信号的自相关函数，研究流场湍流结构，发现近尾可能存在大涡拟序结构，而在远尾则没有湍流。
By studying the autocorrelation function of the probe signal, it is found that the large eddy quasi ordering structure likely exists in near wake, but there is no turbulence in far wake.
应用紊流大涡模拟方法对建筑物环境风场进行了数值模拟。
The large eddy simulation approach is applied to airflow field around buildings.
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.
从自由涡运动方程出发，推导出管内流场的势函数和流函数方程，获得了管内流场的数学分析解；
Then basing on the free-vortex equation, potential equation and stream function of flow are achieved by mathematical analyze, and solving these equations gives flow fields.
本文采用LIF(激光诱导荧光)流动显示和PIV(粒子图像速度场仪)测量对横流冲击射流的尾迹涡结构进行了实验研究。
The wake vortices of an impinging jet in crossflow were studied experimentally by means of laser-induced fluorescence (LIF) flow visualization and particle image velocimetry (PIV) measurement.
计算结果表明，旋风分离器内部的流场分为两部分：螺旋通道内比较稳定的流场和筒体中心区域的复合涡结构流场。
It is shown that there are two regions in the cyclone, the steadily tangential flow in the spiral channel and the combined vortex flow in the centre.
研究了由涡度诱导出的速度场，采用数值模拟方法，讨论了矢量场的分布和几何拓扑性质。
The velocity field resulting from vortex flow is studied. The vector field distribution and geometry topology characteristic are discussed by means of numerical simulations.
以势流理论为基础，本文用不可压流涡段所产生的扰动流场的线性叠加，计算涡分离流动的流场。
Based on the potential theory, a linearity combination of the disturbance flow field generated by the uncompressible vortex part was applied in the computation of separate vortex flow.
采用涡耗散概念（EDC）模型，对等离子发生器内三维湍流燃烧流场进行数值模拟。
The eddy-dissipation-concept (EDC) model is used to simulate the three-dimensional combustion process in a plasma generator.
数值模拟清晰地显示了排气缸通道内的流场结构是以各种旋涡为主要特征，包括通道涡、分离涡和端壁涡等。
The computational results revealed a complex vortex system within the casing model, including a passage vortex, a separation vortex and an endwall vortex.
根据某型涡喷发动机计算状态叶片流场计算结果，对该发动机高压涡轮转子叶片进行了热分析；
Thermal analysis on the first stage turbine rotor blade has been completed based on the CFD results under calculated conditions.
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.
对扑翼的非定常流场，传统的定常涡格法已不再适用。
For the strongly unsteady characteristic of the flow field of flapping-wing, the traditional vortex lattice method is not more effective.
对气固两相平板混合层流动，采用离散涡方法模拟气相场，轨道法跟踪颗粒的运动。
The gas and particle phase in the gas solid two phase plane mixing layers flow is numerically simulated using the discrete vortex method and trajectory method respectively.
应用七孔探针空间流场定量测试技术研究了翼尖涡的流动结构，给出了翼尖尾涡在下游两倍弦长距离内的速度和压力场分布随迎角变化的规律。
The flow field of the wing tip vortex, which shed from a rectangular wing, is surveyed by a seven holes probe in a low speed wind tunnel.
应用七孔探针空间流场定量测试技术研究了翼尖涡的流动结构，给出了翼尖尾涡在下游两倍弦长距离内的速度和压力场分布随迎角变化的规律。
The flow field of the wing tip vortex, which shed from a rectangular wing, is surveyed by a seven holes probe in a low speed wind tunnel.
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