查询词典 vortices

It has a period of about 6~11 min. The vortices have a scale of about 5000 km×1400 km, and move earthward at the speed of 15~25 km/s.

所有5个涡流的旋转方向都为顺时针方向，旋转周期约为6~11 min。

When liquid flow rate was low, the two small nearly symmetrical vortices can be observed clearly from the liquid velocity field in circulating fluidized bed.

利用所建立的液固循环流化床模型，文中考察了各种工况条件对流化床内流动的影响。

Thus LES is proved to be suitable to simulate the flow and temperature fields of large scale vortices with complex geometric boundaries. LES cooperated with the second order full extension ETG finite element method is applied to simulate the forced convection heat transfer around two square cylinders arranged side by side. While the boundary conditions are symmetrical, the time history and power spectrums of drag coefficient, lift coefficient, averaged Nusselt number at the wall, and the streamwise velocity and temperature on the symmetrical points are calculated. The results show that the power spectrums are all almost symmetrical.

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间距比为1.5的条件下横掠并列双方柱强制对流换热问题进行了数值模拟，通过边界条件对称时，对并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数进行的时域分析和频域分析，得到了在对称边界条件下并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数的功率谱均基本对称的结论。

In city , because the occupied area of the urban sewage pumping station is usually limited , the length of the forebay is inclined to be short and the diffusion angle in flow direction is big accordingly , which causes bad flow pattern, such as backflows ,vortices, etc.

城市排污泵站由于条件的限制，前池一般面积较小，扩散角较大，扩散段较短，因此水流进入前池后突然扩散，流态紊乱，易行成回流、漩涡等不良水流流态，从而影响水泵的工作性能。

If a manual mini disturbance is set on the tip of forebody, the asymmetric vortices flow becomes determinate.

通过在模型头部设置确定的微人工扰动可以消除这类流动的不确定性。

The flow and pressure distribution of mid-part leeside of a slender are dominated by sweep wing and forebody vortices.

细长体中段背风侧的流动和压力分布受到后掠翼与头部背涡的双重控制。

Wind tunnel tests had showed that vortices produced by the forebody strake generally improved directional stability, but that certain strake shapes actually reduced stability at high angles of attack when twin tails were used.

风洞测试已显示涡产生的前体边条一般其实改善但那某些边条形状的定向稳定性双尾被使用时，请减少高迎的稳定性。

The formation and development of these horseshoe vortices were studied and compared.

对这四种马蹄形涡的形成及发展进行了研究和比较。

The test results show that these horseshoe vortices are different in size,...

实验结果表明，这些马蹄形涡在尺度、运动速度和变形上是有差别的。

The vortices consume mechanical energy and distort the flow field to maldistribution at the same time.

从分析得到，原始封头主要依靠其内部的横向压力梯度来进行物流的分配，并因物流的分离会产生很多旋涡。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐