查询词典 vortex of vector field

The hydrodynamic performance and the calculation of induced velocity along flow on the constant point after foil shows that if the effects of tip vortex and decay of vortex panel strength be considered, the accuracy of calculation can be increased. Velocity peak value in propeller wake current and distribution of induced velocity after three-dimensional short foil else can be calculated accurately.

通过对三维短翼的水动力性能和翼后给定点沿流向的诱导速度计算表明：采用考虑翼梢涡影响和涡的衰减影响的计算模型，可以提高三维短翼的水动力性能计算精度；可以准确地计算出螺旋桨尾流场的速度峰值；可以较好地计算出三维短翼翼后的诱导速度分布。

Vortex tubes of different length were developed and the effect of the length on the performance of vortex tube was investigated by experiment with air as medium.

研制了不同热端管长度的涡流管，并以空气作为工作介质，通过实验研究了热端管长度对涡流管能量分离性能的影响。

Secondly, conception of vortex board was introduced, the numerical simulation was implemented on vortex tube, numerical simulation method was verified of valid by compared with experiment results.

其次，引入涡流板概念，对涡流管进行数值模拟，对比数值模拟和试验结果，验证了数值模拟方法的可靠性。

Corresponding to simulation results, middle flow shows more regular because vortex separation from upstream tube bundles suppress the vortex generation in downstream.

由于多个拟序的涡结构在下游不断的相互作用使得尾迹中的涡结构越来越混乱。

Author analysis the theory of the refrigerating of vortex tube, and give the idea of industry cooling using vortex tube, just because abundant compressed air can be provided in industrialization manufacture.

正因为如此涡流管在科学研究和工业的很多部门具有广阔的实际应用前景。

Jet aircraft, including the vortex theory of jet and fan jet vortex.

喷气式飞机，包括涡论喷气式和涡论风扇喷气式飞机。

Based on theory analysis and numerical calculations, some valuable conclusions are put forward, and some problems in early investigations are found out. Therefore, the results enrich the helical vortex theory and also clear the way from the helical vortex theory to its engineering application.

通过本文的理论分析和数值计算，获得了一系列有价值的研究结果，完善了螺旋涡理论，奠定了该理论工程应用基础，同时发现并解决了早期研究中存在的若干问题。

As mentioned above, by systematic research on helical vortex theory in the present paper, the primary theory with features of static state, single filament and core radius vanished have been developed into new one with motion, multi-vortex and finite-core.

在本文应用研究中，给出了三个实际工程流场解析解和数值计算结果，这些结果在进一步分析装置中的螺旋涡形成机理、分析被诱导流场的进出口边界条件、指导转轮叶片的优化设计、达到产生或消除螺旋涡目的等方面都具有重要意义。

In an admirable error bound, the numerical simulation had the close results with experiment by the characteristic curve of cold mass flow fraction, as well as Thermodynamics model of vortex tube, So Thermodynamic theory hypothesis was available to explain Ranque-Hilsch effect of vortex tube.

在误差允许的范围内，涡流管冷流率特征曲线描述的结果与涡流管热力学理论给出的结果非常相近，说明涡流管热力学理论假设能够描述Ranque-Hilsch效应。

By using several thousands of point vortices and small space mesh, we obtain the large scale discrete vortices on the vortex sheet as result of the pairing of small point vortices, thus simulate the instability phenomena of the rolling-up vortex sheet.

由于使用了数千个点涡和较小的空间网格，获得了前缘涡层小涡配对出现的较大的离散涡，模拟了紧卷涡层的不稳定现象。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。