本文提出了涡层边介层理论。
This paper-gives the theory of boundary layer of eddy layer.
实验观察到射流迎、背流剪切涡层卷起形成类开尔文涡列。
A kind of Kelvin type vortex formed by the roll up of the jet shear layer is observed in the experiment.
最后，本文从涡层的角度重新推导了翼型虚拟质量计算公式。
Finally, in view of vortex sheet, the formula of virtual mass has been re-derived.
本文利用三维积分边界层法并结合流线法决定涡层型流动分离。
A 3d integral boundary layer approach is used and coupled with streamline method for determining vortex-layer-type flow separation.
本文数值模拟了多涡结构在边界层中的非线性演化过程。
The evolution of vortexes in the boundary layer are numerically simulated.
为了加深对复杂流动混合现象的认识，为化工设备设计提供理论基础，用大涡模拟方法对可压缩气体混合层进行了三维数值模拟。
To offer a theoretical foundation for chemical equipment design, three-dimensional numerical simulations are made for compressible turbulent mixing shear layer based on large eddy simulation(LES).
用拟谱方法对混合层四涡合并的规律进行了数值研究。
The merging of four vortices in mixing layers are simulated numerically with the pseudo spectral method.
这意味着网格湍流能有效抑制剪切层中的大涡和拟序结构。
This means that grid turbulence can effectively suppress the large-scale vortex and coherent structure in the shear layer.
极涡是该区域四季存在、冬强夏弱、向上延伸至平流层下部的基本环流系统。
Polar vortex is a basic circulation system which exists in every season (strong in winter and weak in summer) and can extend to the lower level of stratosphere.
采用大涡模拟方法研究了存在逆温层的情况下大气对流边界层的湍流特性。
The turbulent characteristics in convective boundary layer topped temperature inversion were numerically investigated in terms of large eddy simulation.
一些学者已通过平流层和对流层耦合机制的研究探索极涡变化对低层环流的作用。
The mechanisms coupling the stratosphere and troposphere have been studied by some scientists for understanding the effect of the polar vortex change on the lower circulation.
将它与大气对流边界层中的“大涡”自组织现象作了初步对比。
And it was compared with the self organizing phenomenon in atmospheric convective boundary layer.
高空具有高湿位势涡度值的干冷空气叠加在低层扰动上，有利于不稳定层结的加强和降水发生。
The upper level dry and cold air with high moist potential vorticity value was superposed to the low-level disturbance, which was advantageous to instability stratification strength and precipitation.
气旋性环流和气旋性涡度在对流层中层的700毫巴附近最强。
The strongest cyclonic circulation and vorticity are at about 700 mb.
中平流层环流转型与对流层重要系统(极涡、西太平洋副热带高压)存在一定关系。
The relation between the transition dates in middle stratosphere and the important systems in troposphere such as polar vortex and the subtropical high in West Pacific.
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.
采用两层涡粘性模型和速度剖面的指数律导出机械能方程的耗散积分解析表示式。
An analytical expression of dissipation integral for kinetic energy integral equation is derived by two-layer eddy viscosity turbulence model and the power law of the velocity profile.
给出了转捩边界层中流向涡产生的物理过程。
The process for the formation of the streamwise vortex in a transitional boundary layer is described.
通过中性和不稳定层结条件下不同叶面积指数算例的模拟分析及与已有观测结果的比较表明，本文所建大涡模式对森林冠层和森林边界层有较好的模拟效果。
The analysis of simulation results and the comparison with observational data show that the LES model simulates the turbulent flow in forest canopy and forest boundary layer very well.
发现沿切变线走向有一条中尺度涡管，位于对流层中低层，高度呈波状起伏。
The results showed that there was a mesoscale vortex tube along the mesoscale shear line on the middle low troposphere, and its altitude varied in a wave shape.
本文采用定常二层模式讨论较小地形及高、低层流场配置对西南低涡形成的动力作用。
In this paper, two-layer models are adopted in considering the dynamic action of the disposition relation between upper layer and lower layer fluid fields on the formation of the south-west vortex.
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.
同时准定常行星波冬季向上传播至平流层并与平流层极涡相互作用从而也影响了北极涛动在北极的活动中心。
Meanwhile, planetary waves propagating upwards also affect the polar vortex in the stratosphere, and then affect the Arctic centers of action of the AO.
本文建立湿位涡方程、提出不守恒基本判据、分析不守恒运动的动力特征，尤其指出在湿中性层结区域非绝热加热和外作用力场对运动的激发作用。
In this paper a set of equations of wet potential vorticity is founded, the basiccriterion of non-conservation is set up, and the dynamics character of the non-conservationmotion is analysed.
采用加密网格的大涡模式获取边界层风、温场的高分辨率模拟结果，并据以分析近地面层大气的湍流特性。
Refined grids were utilized in a large-eddy simulation (LES) model for obtaining high-resolution planetary boundary data and analyzing surface layer turbulence.
利用电磁体积力改变流体边界层的结构，用作用于流体边界层上的电磁力进行消涡与增涡控制。
The electromagnetic body force was used to change the configuration of the boundary layer of flow.
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.
尺度 湍涡的子午线热输送在纬度对流层上层是最重要的。
Meridional heat transfer by large-scale eddies is most significant in the upper troposphere of middle latitude.
尺度 湍涡的子午线热输送在纬度对流层上层是最重要的。
Meridional heat transfer by large-scale eddies is most significant in the upper troposphere of middle latitude.
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