查询词典 vortex theory

Based on the first and second law of thermodynamics, entropy generation theory is applied to establish vortex tube model.

根据热力学定律，采用最小熵产分析方法，建立了涡流管的热力学模型，得出了产生所需冷热端温度同最小压比之间的函数关系，并在h—s图上表示出涡流管能量分离热力过程。

This theory is also applied in the researches of knotlike cosmic strings in early universe and the knotlike vortex lines in spinor Bose-Einstein condensates.

在本文中应用这一纽结理论作者还研究了早期宇宙中的纽结状宇宙弦和旋量玻色-爱因斯坦凝聚体中的纽结状涡旋线。

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。

First, the mechanism of local head loss is clarified from the theory of plane flow and vortex; and the relationship between local head loss coefficient and barrier-discharge of pile permeable groins is derived.

首先，应用平面绕流与旋涡理论阐明其局部水头损失的机理，导出了桩柱透水丁坝局部水头损失系数与阻水流量的关系式。

The statistical vortex structure theory of turbulence was put forward by late professor Zhou in the 1950s'.

旋涡结构的湍流统计理论是已故周培源教授在20世纪50年代率先提出来的。

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 theory of vortex dynamics and fluidic impedance, the impacts of pressure-sampling position and joining pipe's frequency response on measured performances of the method were investigated.

应用旋涡动力学和流体阻抗法，分析了取压位置和引压管频率特性因素对该方法测量性能的影响。

According to the rotor dynamics theory,the vortex mechanism and rule of the rotor are closely related to the collision and friction interaction.

根据转子动力学理论，转子的涡动机理及规律与碰摩作用密切相关，考虑下部钻柱与井壁之间是否发生碰摩作用，应用转子动力学理论建立了2个下部钻柱涡动分析模型，探讨了下部钻柱涡动机理及规律。

Taking advantage of potential vorticity thinking and vortex Rossby wave theory, we verify the existence of waves like VRW that is dynamical mechanism for intensity change.

利用位涡表征的螺旋雨带以及涡旋—Rossby波理论，探讨气旋加强与减弱的成因机理，证实了气旋环流中确实存在有涡旋—Rossby波性质的波动。

The theoretical development of internal flow of turbomachinery is then summarized in terms of separation theory, vortex dynamics and flow pattern.

然后分别从分离流动理论、涡动力学和叶轮机械流型三个层次介绍叶轮机械内部流动理论的发展；从平面叶栅、环形叶栅、动态试验和试验技术等方面回顾叶轮机械试验研究进展；从控制方程、数值方法、网格生成等方面综述叶轮机械数值计算研究方法、研究内容及成果等，并概括改善叶轮机械气动性能的方法和现状。最后对叶轮机械内部流动研究进行展望。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。