查询词典 vortex flow

The results of simulation show that a series of "second-vortex" are produced when streamwise "reverse-vortices" are effected by riblets. They weaken intensities of "reverse-vortices", and restrain the productions and developments of low-flow strips, so turbulent drag reduction is obtained.

仿真结果表明，沟槽表面与顺流的&反向旋转涡对&相互作用，产生&二次涡&，削弱了&反向旋转涡对&的强度，进而抑制了低速条带的形成和发展，从而降低湍流猝发强度，实现湍流减阻。

Besides, the vibrations of the valve body and poppet induced by the cavitating flow are detected using vortex displacement transducer, laser displacement meter and digital strain device.

实验同时采用涡流式位移传器，激光位移器和数字应变测量仪等构成的检测系统，研究了气穴流场诱发的阀体与阀芯振动。

It is well known that the flow status in vortex tube is very complex.

众所周知，涡流管内流动状况十分复杂。

First of all, Different types of nozzles have been studied to find out the effect of the nozzle shape and flow passage on energy separation and suitable nozzle type for two-phase vortex tube has been obtained.

分析了不同流道，不同形状的渐缩喷嘴对涡流管能量分离的影响，得到了适合于两相涡流管的喷嘴形式。

The performance of energy separation on the vortex tube designed by the author is studied at different cold mass flow ratios, and the characteristic curve has been drawn.

对于本文设计的涡流管，研究了不同冷气流率时涡流管的能量分离特性，并且绘制了性能曲线。

My company Vortex Flowmeter, Metal Tube Variable Area Flowmeter, standard orifice flowmeter flow measurement and other products are also made vast numbers of users, our products have independent intellectual property rights, with the National Metrology production permits for the adapt to the rapid development of high technology and business challenges of the sea fierce competition, our company continuously introducing advanced technology, technical and technological equipment, product technology, quality levels improved steadily and gradually in line with international standards, a variety of products with the domestic industries, and a number of national patents and awards.

我公司的涡街流量计、金属管浮子流量计、标准孔板流量计等产品也在流量计量方面也取得广大用户的认可，我公司产品均具有自主知识产权，拥有国家计量生产许可证，为适应高科技的飞速发展和商海激烈竟争的挑战，我公司不断引进先进技术、工艺和技术装备，使产品技术、质量水平稳步提高并逐步与国际接轨，多种产品居国内同行业之首，并获得多项国家专利权和各种奖项。

By the analytical calculation method, the paper focuses on researching systematically flow field induced by helical vortex on aspects of theory and application.

本文主要运用解析法，从理论和应用两个方面对螺旋集中涡诱导流场问题进行了系统研究。

Based on the experiment, the flow variation and impact on release works is studied. The vortex theory is adopted to study the side shrinkage angle and optimum step of the bulkhead gate to improve the overflowing condition.

通过试验分析研究了闸后水舌的流态变化规律及其对泄水建筑物的影响；采用涡流理论分析研究闸后水舌侧收缩角的计算方法；根据侧收缩角计算出闸门槽的最优错距，从而改善闸孔出流的水流条件。

Moreover, to prevent the vorticity from entering into the body, the concept of "residual vorticity" is introduced in the sense that partial circulation of the vortex sheet is remained at the boundary without being diffused into the flow field. Blobs very close to the wall are thus unnecessary.

为避免部分新涡泡太过接近边界，我们引入了「残留涡度」的概念，将离边界甚近之环量转为涡片形式留在边界上，以减少环量进入物体内部之误差。

To simulate the diffusion of the vortex sheet into the flow field as time goes on, Koumoutsakos' analytical solution is employed, in which an effective vorticity flux is derived and used for solving the vorticity diffusion equation.

而涡片之环量随时间扩散进流场之现象则藉由Koumoutsakos之理论，以边界上之等效涡度通量求解扩散方程式，得解析解后，再将之离散为边界附近之新涡泡。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。