查询词典 vortex

It is proved that the dual time step algorithm is efficient in the simulation of unsteady flow with the prediction of vortex shedding over circular cylinders and shock buffeting over bicircular airfoils.

在非定常流动的数值模拟中引入隐式双重时间步方法，并对2种经典的非定常流动现象进行计算，取得令人满意的结果，证明双重时间步方法具有较好的精度和较快的收敛速度。

The results indicate that cold vortex always has a biggish bound cold air pool in middle and high level.

结果表明：冷涡总是以水平旋转的中高层的干冷空气堆作为其结构特点。

The Vortex Flowmeter is a kind of fluid developed according to the card door principle flaps a concuss type discharge to measure appearance.

涡街流量计是根据&卡门涡街&原理研制成的一种流体振荡式流量测量仪表。

Steel pipe concrete ; giant gantries ; dynamic model ; wind tunnel test ; vortex inspiriting vibration

钢管混凝土；龙门架；动力特性；风洞试验；涡激共振

Rosemount Vortex Flowmeters arrive pre-configured, hydrostatically tested, and ready to install.

罗斯蒙特涡街流量计到达预先设定的，静液压试验，并准备安装。

Flow inside hydroturbine has great influences on its energy characteristics as well as unit stability. In particular, the vortex in the draft tube is an important factor which affects unit stability. Therfore, the research of flow in the hydraulic draft tube is continuouly receiving everbodys attention.

水轮机内部流动，不仅对其能量特性有重要影响，对机组的稳定性也有严重的影响，尤其是尾水管内的旋涡流动更是引起机组稳定性的重要因素，因此，水轮机尾水管内的流动研究一直受到大家的重视。

The surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution.

采用面元法预报大侧斜螺旋桨水动力性能，螺旋桨表面及尾涡面离散为四边形双曲面元，每个面元上布置等强度源汇和偶极子分布。

Vortex lattice method is presented for calculating the loading distributions on all blades of propeller and hub which a number of small hyperboloidal quadrilateral panels are discreted.

螺旋桨采用离散涡环法，将桨叶表面和桨毂表面离散为一系列双曲四边形，在四边形网格中布置集中涡环和线源分布，根据物面条件建立方程得到涡和源汇分布的强度。

It is found that the size of vortex dark core in the focal region and the spectral degree of coherence in the focal plane depend on the topological charges n , interceptive parameters δ, relative coherence lengths σg and the parameters α.

数值计算结果表明，涡旋暗核的大小和焦平面上的光谱相干度都取决于入射光的拓扑电荷n、截断参量δ、相对相干长度σg和参量α。

There have been an amount of researches devoted to vortex merger in twodimensional inviscid flow.

二、旋涡合并的研究，以前大都局限于二维无粘模型。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。