查询词典 vortex sheet

In this paper, a method of entropy has been used to investigate vortex tube, throttle valve and expansion turbine.

本文利用熵法对涡流管、透平膨胀机及节流阀三种装置进行了研究。

It is pointed out for the first time, that if in the Chern-Simons field theory the vortex lines are knots, the Chern-Simons action itself is a topological invariant; a step further, this action is just the total sum of all the self-linking and linking numbers of knot family.

文中首次指出，当陈-Simons场论中的涡旋线是纽结时，陈-Simons作用量本身是一个拓扑不变量，并进而指出这一作用量恰是纽结族的所有Self-Linking数和Linking数之和。

The hydraulic characteristics of transverse axis vortex behind the sill of the dissipater are studied with the hydraulic test.

通过水力学试验方法，对跌坎式底流消能工坎后横轴漩涡的水力特性进行了初步研究。

Experiments were performed in horizontal and vertical conduits with diameter of 50 mm respectively, adopting air and water as flow media and a triangular prism as the vortex-forming body.

以空气和水为介质，以三角柱为旋涡发生体，在内径为50mm的水平管和垂直上升管中分别进行实验，分析雷诺数和体积含气率对气液两相流涡街稳定性的影响。

Therefore, only elimination of reflux and the vortex, so that uniform distribution of flow velocity in order to ensure the normal operation of pump unit.

因此只有消除回流和漩涡，使水流速度均匀分布，才能保证水泵机组的正常运行。

We analyze a singly-quantized vortex in a spin-polarized Fermi gas at unitarity, based on a mean-field approach.

通过应用平均场的方法，从理论上研究了强相互作用极化费米气中单个涡旋态的结构。

The numerical solution shows that the optimal velocity field for laminar convective heat transfer in tubes is multi-longitudinal vortex flow.

数值求解表明，管内层流对流换热的最优速度场为多纵向涡流态。

The results show that the ratio of jet velocity to free flow velocity affects the location of vortex breakdown.

结果表明，后缘喷流速度与自由来流速度之比影响前缘涡破裂的位置。

Flow visualization and laser velometer measuring results show that the radialdistribution of turbulent intensity and turbulence stresses grow with the increase of voidfraction until large vortex formed near the pipe wall,and the formation of Taylor bubbleor the coalescence of bubble cluster should be restrained by intense turbulence.

流动显示和激光测速计的测量表明，湍流强度和湍流应力的径向分布均随空隙率的增长而迅速增长，直至在近壁形成大尺度涡结构，使Taylor泡的形成或气泡群的聚并被强湍流的作用抑制。

Among the flowmeters discussed are orifice plate meters, venturi meter and standard nozzles, critical flow venturi nozzles, positive displacement flowmeters, turbine and related flowmeters, vortex shedding and fluidic flowmeters, electromagnetic flowmeters, ultrasonic flowmeters, and coriolis flowmeters.

在讨论的是孔板流量计米，丘米和标准喷嘴，文丘里喷嘴临界流，容积流量计，涡轮机和相关流量计，涡脱落和射流流量计，电磁流量计，超声波流量计和科氏流量计。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。