查询词典 vortex sheet

In the multiple turbulent jet-to-crossflow, the"hole inhale phenomenon"is more obvious in the lee of the first jet orifice. We got the vortex fields of the multiple turbulent jet-to-crossflow in different conditions. The developing processes of horseshoe vortex and kidney counter-rotating vortex pair are studied. The results suggest that in the multi-hole jet, until the multi-hole jet merging into a new jet, the miniature of horseshoe vortex appears, and the shape of CVP changes regularly.

计算还给出了不同工况多孔横向紊动射流的涡量场，并对马蹄形涡和反向涡旋对的形成机理及发展过程进行了系统的研究，并指出，在多孔射流中，当多股射流合并为一股新的射流之后，才出现马蹄形涡的雏形，CVP的形状也逐渐变的规则。

The model of 3-dimensional stretching vortex ring of turbulent elliptic jet in crossflow are discovered for the first time. It is pointed out that in the evolution of turbulent jet in crossflow the 3D vortex rings, which stretching, distorting, swing in transverse direction and twisting around the stream-wise, play the leading role in the large-scale coherent structures. The counter-rotating vortex pair observed in the literature is in fact the head of the 3-dimensional vortex ring.

首次发现和提出了湍流横向椭圆射流的三维拉伸涡环模型，指出在其大尺度拟序结构中真正占主导作用的是拉伸、扭曲、沿流向扭动、展向摆动和绕x轴的转动的三维涡环，在众多实验和文献中观察到的反向涡对其实是由三维涡环头部组成。

A circle shear device for cutting holes in sheet metal as in claim 1 wherein: a said upper center shaft includes a first platform member disposed rotatably connected adjacent a lower end of said upper center shaft for supporting a top surface of said provided metal sheet; b said lower center shaft includes a second platform member disposed rotatably connected adjacent an upper end of said lower center shaft for supporting a bottom surface of said provided metal sheet; and c said upper and lower support platform members engaging top and bottom surfaces of said provided metal sheet to prevent metal sheet movement when said cutter wheels are brought into shearing contact with said provided metal sheet.

一个圈剪切装置切割孔金属板材作为权利要求1 ，其中： A ）表示，上中心轴，包括第一次会员平台弃置rotatably连接相邻较低月底上说，中心轴为支持一个顶面的表示，提供金属板材； B ）表示，较低的中心轴，包括第二个平台会员弃置rotatably连接相邻上月底表示，较低的中心轴为支持一个底部表面的说，提供金属板材； C ）表示，上，下支撑平台成员从事顶部和底部表面的表示，提供金属板，以防止金属板运动时说，刀车轮被带入剪切接触说，提供金属板材。

The author established the axisymmetrical bubble with the vortex sheet and the vortex ring and established the three-dimension bubble with vortex ring respectively based on the achievements of the former researchers.

本文在总结前人研究成果的基础上，分别建立了轴对称涡面模型、涡环模型以及三维涡环模型。

The rolling-up of the leading-edge vortex sheet and interaction with the trailing-edge vortex are simulated numerically by using the two-dimensional unsteady analogue and vortex-in-cell method.

本文应用二维非定常比拟和恪子涡(Vortex-in-Cell)方法，数值模拟了三角翼前缘涡层的卷起以及与尾涡的相互作用。

Delta wing ; vortex method ; detached vortex ; vortex sheet.

三角翼；涡方法；脱体涡；涡层

By using several thousands of point vortices and small space mesh, we obtain the large scale discrete vortices on the vortex sheet as result of the pairing of small point vortices, thus simulate the instability phenomena of the rolling-up vortex sheet.

由于使用了数千个点涡和较小的空间网格，获得了前缘涡层小涡配对出现的较大的离散涡，模拟了紧卷涡层的不稳定现象。

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演唱『我的野蛮女友』中文主题曲『I Believe 』以及韩剧『钢琴』中文主题曲『 Piano 』的范逸臣，随著电影及电视剧的大受欢迎，更让人注意到他独特深情的歌声，对他的期待与讨论也在网路上不断的蔓延与发烧…，使他尚未曝光就成为询问度极高的新人，他的第一张。。

The two-dimensional structural units (such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space are assembled according to the sphere close packing manner, and the close packing layers parallel to {0001}. There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers. The two types of structural layers with different interlayer space fitted together in six kinds of assembling modes and formed six kinds of crystal layers. The combinatorics analysis of the two-dimensional structural units revealed that there may be 28 kinds of TOT type interstradified minerals in six kinds of polysomatic assembling modes of interatradified structure. The structural layer is symmetrical for octahedron sheet in the structure of interstratified minerals and shows polarity characteristics.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；两种模式的结构层与不同类型的层间物组装形成六种组装模式的晶层；并通过二维结构单元体的组合规律的分析，计算出可能存在的28种TOT型间层结构，它们分属于6种间层结构多体性组装模式；间层结构中，结构层对于八面体片是不对称的，并在属性上表现出极性特征；间层矿物的晶层类型可用6种多体性组装模式加以表达。

This subject takes the thick metal sheet as the research object, adopting combination of physics analysis and mathematics calculation, combination of the theories study with computer simulating and concretely experiment, at the basic of analyze the stress strain of sheet"s thickness direction, consider the influence of sheet"s thickness variety and the stress straining neutral layers variety to the craft parameter, in the basic of using for reference of the sheet, figure out the craft process and craft parameter of the sheet.

本课题以金属厚板为研究对象，采用物理分析和数学计算相结合、理论研究与计算机模拟和具体实验相结合的方式，在分析板厚方向应力应变状况的基础上，考虑板厚变化和应力应变中性层变化对弯曲工艺参数的影响，在借鉴薄板弯曲的基础上总结出厚板弯曲的一般计算方法。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。