查询词典 vortex flow

The results show that as the wind is along one leg of the model, the vibrations which are mainly caused by turbulence of oncoming flow are weak, and as the wind is along the angular bisector of two legs, the vibrations induced by vortex are strong.

实验结果表明：当风向顺Y型柱体某一肢时主要是来流脉动引起柱体较弱横向振动；当风向顺Y型柱体两肢分角线时则由涡脱落而引起柱体强烈的横向振动。

Both sides of intake maybe occur intermittent inspiration vortex with high flow flood in floodplain. It can be subtracted by means of inclining the breast wall to the upstream.

大流量漫滩洪水时进口两侧可能出现的间歇性吸气漩涡，可采用将胸墙向上游倾斜的方式予以消减。

The low-dimensional Galerkin method is generalized to solve the flow around arbi-trarily translating circular cylinder.Active control problems of wakes behind circularcylinders are numerically investigated by only small number of modes.The in-line andtransverse oscillation of a circular cylinder with proper frequency produce Karman vor-tex street successfully in some subcritical regime,vhereas the transverse oscillation of acircular cylinder with 1.8 times the natural shedding frequency can effectively suppressthe Karman vortex street at a slightly supercritical Re.

将低维Galerkin方法推广至可以求解任意平移运动圆柱的绕流问题，用较少的模数值研究了圆柱尾迹的主动控制问题，在亚临界Re数下圆柱以适当的频率沿流向和横向振动均成功地激发出Karman涡街；而在略高于临界Re数下圆柱以1.8倍自然脱涡频率沿横向振动明显地抑制了Karman涡街；再现了超临界Re数横向及流向振动圆柱绕流的频率锁定等复杂非线性现象。

By using the swirling strength method,the vortex structures excluded the effect of shear were shown clearly,and were concentrated in the coniform area of the central mixing flow field.With increasing Reynolds number,swirling strength increased and the coniform area became narrow.

利用旋涡强度法分析流场清楚地显示出排除了剪切作用的涡结构主要集中在混合层中心的锥形区域，随着Reynolds数的增大，旋涡强度的值不断增大而锥形区域不断变窄。

It shows that flow field of vertical vortex is not only the function of the radial coordinate but also the function of the axial coordinate.

运用数值模拟具有能模拟各种不同边界条件的优势，还对非对称来流条件下形成的立轴旋涡进行了模拟。

The number and size of flow jets can be varied to optimize the creation of a mixing vortex, and the direction angle can be varied in the same manner, and/or optimized for Coriolis efficiency (counter clockwise in the Northern Hemisphere, and clockwise in the Southern Hemisphere).

的数量和规模的流动战斗机可以多种多样，优化建立一个混合涡和方向不同的角度可以以同样的方式，和/或优化的科里奥利效率（反顺时针在北半球，并顺时针方向的南半球）。

Around the dark core of an optical vortex, the energy flow carried by the light beam is like a spiral staircase, flowing in a clockwise or counterclockwise direction.

绕着光涡旋的黑暗中心，光束携带的能量流就像螺旋梯，沿着顺时针或者逆时针方向流动。

The Discrete Vortex Method for compressible flow is then proposed, in which the dilation term is solved by the Particle Method within the Lagrangian framework.

基于Lagrangian框架下的粒子方法，求解可压缩流中的胀量项，从而用离散涡模型求解了非定常、不稳定、可压缩流场。

Validation of the method is presented by calculating the Taylor's vortex array and a double layer flow problem.

并以Taylor涡和流体的初始流场为双层速度分布的问题为例，得到了很好的结果。

LES cooperated with the second order full extension ETG finite element method is applied to simulate three typical problems concerned with convection heat transfer with sufficient experimental data. By comparing the numerical results with the experimental results, LES is proved to be of better accuracy and stability when it is used to solve the problems concerned with convection heat transfer. The time history of the flow field and temperature field can be reflected better, and abundant information of the fields can be obtained. Furthermore the details of the change in the vortex structure can be captured.

应用大涡模拟与二阶全展开ETG有限元离散格式相结合的方法对具有实验基础的三个典型对流换热问题进行了数值模拟，并将模拟结果与相应的实验结果进行对比，证明了大涡模拟应用于对流换热问题中具有较高的稳定性和精度，能够较好地反映流场和温度场的时变过程，提供丰富的温度场和流场信息，捕捉流场中旋涡结构的变化细节，尤其适合于边界形状复杂的区段内含有大尺度各向异性涡的流动和换热问题的计算。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。