涡

基于涡度相关技术估算植被/大气间净CO2交换量中的不确定性

Uncertainties in long-term studies of net ecosystem co_2 exchange with the atmosphere based on eddy covariance technique on quantity

大涡PIV方法测量水平矩形槽道内湍流耗散率

Estimation the turbulent dissipation rate in a horizontal rectangular duct by large eddy PIV method

他盯着她指尖的涡纹和流纹。

He stared at the whorls and lines of her fingertips .

离心压气机叶轮的可控涡设计及其CFD比较分析

Aerodynamic design and numerical analysis of centrifugal impeller blades

本文将MPS法大涡模拟成功的应用在新建立的数值水池上，并进行造波模拟。

LES is used in the new numerical wave tank to generate wave numerically .

PDC钻头在井底的涡动分析研究

The Study of the PDC Anti-whirling

受扰动翼梢涡自组织过程的LDV和PIV测量

Measurement on the self-organization process of disturbed vortices

研究表明：MEMS器件对控制大迎角细长旋成体非对称涡和复杂流场具有良好的控制能力。

The research indicated that MEMS device generate excellent control effect on asymmetric vortices over slender body as well as on complex flow field .

本文还将该四阶半离散中心迎风格式与涡度-流函数方法相结合，有效地求解了二维不可压Euler方程组和Navier-Stokes方程组。

Combining the semi-discrete central-upwind scheme with the Vorticity-Stream method , 2D incompressible Euler and Navier-Stokes equations are solved effectively .

对涡量输运方程的时间项运用四阶Runge-Kutta法离散，从而将方程分解为4个计算步分别求解。

The solution of the vorticity transport equation was split into four steps using the fourth-order Runge-Kutta method .

并且用该全型涡度方程严格证明了倾斜涡度发展（SVD）理论。

Based upon this equation , the theory of Slantwise Vorticity Development ( SVD ) proposed by Wu et al .

分析非线性涡动裂纹转子中刚度变化比△K，裂纹角β，不平衡参数U对系统分叉及浑沌行为的影响。

Bifurcation and chaos influenced by the ratio △ K of stiffness change , crack angle β and unbalance parameter U of a nonlinear cracked rotor in whirl speed are investigated .

采用物理分步法对线性波中二维射流进行了大涡模拟（LES）。

Two-dimensional jets in linear waves were simulated by large eddy with the help of physical ( fractional-step ) method .

uF为由场点至桨盘处自由涡系在场点处所产生的诱导速度；

UF is a velocity induced by the free vortex line from field point to the propeller dick at the field point ;

通过设计一组试验，证明了浓差极化的危害性和Dean涡能较大程度的降低浓差极化。

Designed a group of experiments to illustrate the harmfulness of CP and the Dean Vortex capability to reduce CP to a great extent .

用ADI方法解涡量方程；用Poisson方程直接法解流函数方程。

ADI method is used for solving the vorticity equation and a direct method for Poisson equation is used for solving stream function equation .

GAME再分析资料能很好地反映出西南涡东移并影响江淮大暴雨的重要天气特征，而NCEP资料则反映不出这一现象。

In addition , it revealed that the GAME reanalysis data can show the evolution of the southwest vortex but the NCEP / NCAR reanalysis data cannot do so .

用两个分布函数分别定义涡量和流函数，得到用两个格子Boltzmann方程建立的模型。

( Using ) two distribution functions to define the vortices and stream function , we obtained two lattice Boltzmann equations to build this model .

对于位流问题，涡只存在于边界层内，可以导出边界层外缘处切向速度等于-x，x为涡强。

For potential flow , vorticity only distributes in the interior of boundary layer , then the tangential velocity at the outer edge of the boundary layer equals - χ, where χ is the strength of the vortex .

首先采用粉煤灰吸附过滤工艺，对污水进行过滤，然后采用CAF涡凹气浮深层内循环SBR法对污水做进一步处理。

The wastewater is filtrated by using absorption process of flyash . More treatment is conducted with the method of CAF air floating and deep internal circulation SBR .

接着本文利用大涡模拟（LES）并通过高精度五点TVD格式，对上述的实验过程进行了数值模拟。

The numerical simulations above phenomena have been carried out by Large Eddy Simulation ( LES ) and high accuracy five point TVD schemes .

其中，第1个新生涡由tertiary涡发展而来，而第2个和第3个新生涡则主要由分离剪切层卷绕生成。

The results indicate that the first new main vortex develops from tertiary vortex , while the second and the third new main vortices generate principally from the rolling-up of the separated shear layer .

本文以南京长江第三大桥为例，研制了用于钢塔施工阶段涡激振动响应制振的制振器TMD和TLD。

Vibration control devices ( TMD and TLD ) for suppressing vortex vibration response of steel towers of the3rd Nanjing Bridge over Yangtze River were manufactured .

推导了同心球间旋转流动的Navier-Stokes方程的流函数-涡度形式，给出了静态奇异点的条件，并计算出解分支。

Velocity-stream function form of the Navier-stokes equations for the flow between two concentric rotating spheres is deduced , and detection conditions of singular point and solution branches are given .

本文根据Lagrange质点理论，在引入Lagrange函数的基础上，应用Hamilton原理，导出了等熵大气运动中的Ertel位涡守恒定理。

In this paper , Hamilton 's principle is used to obtain the conservation theorem of Ertel potential vorticity by introducing Lagrange function according to Lagrange theory .

用数值积分方法分析了大间隙环流中同心Jeffcott转子系统的涡动模式。

The whirling mode of a concentric Jeffcott rotor immersed in large gap annular flow is studied by numerical integration methods .

由涡动相关原始数据得到的温度结构参数更适合于稳定度普适函数fr的确定。

The temperature structure parameter calculated by eddy correlation data was considered more suitable for fixing the stability universal function , the best stability universal function fT_Guyuan was also fixed .

屋盖响应分析结果表明，当开孔结构的Helmholtz频率、弹性屋盖的固有频率以及来流中所包含的涡脱落频率，三者接近时，屋盖将发生较大的共振。

Studies on roof response of sudden opening indicate that resonance vibration will be caused if Helmholtz frequency , roof natural frequency and eddy wake current frequency are the same .

在500百帕层冬季第一象限（5°W&85°E）极涡面积与夏季第二象限极涡面积成正相关。

And vice versa . ( 2 ) At 500 hPa level , the area of polar vortex of the first quadrant ( 5 ° W-85 ° E ) in winter is directly correlated with the polar vortex area of the second quadrant in summer .

南海中部，越南以东海域出现由暖涡W3和冷涡C3组成的一个准偶极子。

In the central SCS , a stronger anti - cyclonic eddy W3 and a cyclonic eddy C3 compose a quasi-dipole in the area southeast of Vietnam .