涡

It shows that the Taiwan topography influence on the movement and the central air pressure is salience. The topography force influence on the typhonic central intensity and unsymmertrical structure is very evident. The Taiwan topography is the primary reason for the low pressure in the windward mountain and high pressure in the leeward mountain. The topography is the primary reason for the peripheral precipitation reinfor4ce of the typhoon.

试验结果表明：台湾岛地形对台风&泰利&的移动路径和中心气压的影响不显著；地形的强迫作用对台风涡度场的中心强度和非对称结构有明显的影响；台湾岛地形是形成迎风坡诱生低压和背风坡诱生高压的主要因子；地形是台风外围降水加强的主要原因。

Based on division of regions of a typhoon and characteristic scales of physical quantities done by Anthes,sets of equations governing different parts of the typhoon are derived with scale analysis and wave energy equations for each part are obtained with the WKB method. Discussions indicated that physical factors contributing to typhoon development are unconstant in all parts of the typhoon,respectively shown as vertical changes in vorticity and tangential wind for the core and outer mid-tropospheric area,...

利用Anthes关于台风的区域划分以及物理量特征尺度的结果，采用尺度分析方法导出了台风不同区域的控制方程组，又用WKB方法得到各区的波能量方程并进行了讨论，指出影响台风发展的物理因子在各区的异同点：各区都有非定常因子；同时，台风内核及外围中层对流层的因子有涡度和切向风的垂直变化，外围边界层有热成风及其偏差，外围流出层有水平位温梯度，这些因子与重力波适当的移向相配合，可使台风能量发展，强度增大。

While with the Coriolis force omitted, the flow in the cavity is under the influence of centrifugal buoyancy force, which can develop from stable to unstable as this force enhances. The centrifugal buoyancy force could lead to flow unstably.

哥氏力垂直于〓与〓构成的平面，对径向速度导致切向作用力，对切向速度导致径向作用力，在该力的作用下盘腔内轴向通流诱导的旋涡被压扁，尽管涡强有所增加，但是盘面的平均换热基本减弱。

Untapered sweep wing ; vortex control ; high angles of attack ; numerical simulation

后掠翼；涡控制；大迎角；数值模拟

This paper deals with a lump-sum flow analysis of a spiral case, stay ring and vaneless annular walls for a small Francis tu...

本文对常用的小型混流式水轮机涡壳、座环和无导叶环壁面内流动状况用最新的 CFD技术进行了整体数值解析。

Vortex structure in shear layer and the interaction among vortices are two important aspect of coherent structure...

平面混合涡结构的演化和旋涡相互作用的研究，是湍流拟序结构研究中的两个重要方面。

In the range of Reynolds Numbers investigated, separation vortices at 10° and 30° incidence are different in nature.

研究表明，在该雷诺数范围内，10°和30°迎角的分离涡系有本质区别。

Vortex structure in shear layer and the interaction among vortices are two important aspect of coherent structures in turbulence.

平面混合涡结构的演化和旋涡相互作用的研究，是湍流拟序结构研究中的两个重要方面。

Under the condition of poor effect of surmounting "statics with pitch-resistant",domestic scholar have made new concept —deviation control with high WOB .

大钻压动力防斜技术增加钻压引起钻柱屈曲，保特钻柱涡动，有井斜时使钻柱产生周期性变化的轴向附加力，无井斜时轴向附加力消失，克服了传统防斜技术中吊打的缺点，提高了钻井速度，达到了解放钻压的目的。

With respect to the center of the typhoon and the residual general field.

且对相应于这些■的两个平衡方程和两个涡度方程分别求解。

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