The flux through the wall of the vortex tube is zero by its definition.
根据涡管定义，穿过涡管管壁的涡量为零。
Both the hardware and the software design of the MCU AT89C52-based control system of the vortex tube is discussed in this paper.
介绍了基于AT 89c 52单片机的涡流管控制系统的设计，包括系统硬件和软件的设计。
This paper mostly introduces a method for computing dust separation efficiency of the vortex tube in the engine air particle separator of helicopter.
本文介绍了直升机发动机进气防砂装置核心元件—涡旋管的砂尘分离效率计算方法。
The flow with sediment trapped by the slit of the vortex tube can form vortex inside the tube and exclude efficiently the coarse sediment near the bed layer in front of the tube.
进入涡管槽口的挟沙水流会形成强有力的螺旋流沿涡管流动，能有效地排除底部推移质泥沙。
An experimental research on the performance of a small flow vortex tube is introduced.
本文用实验方法研究了小流量涡流管制冷的特性。
The process of designing and building of vortex tube experimental system is introduced in detail. The experimental system includes air feed system and mainframe.
详细介绍了涡流管实验台的设计和搭建过程，实验台包括供气系统和主机两个部分。
Results show that gas expansion in central region of vortex chamber caused by swirling flow is an important reason for the refrigerating effect of vortex tube.
结果表明：涡流导致涡流室中心区域气流膨胀是涡流管产生制冷效应的一个重要原因。
The result showed that the stream function of vortex tube was expressed as the superposition of the stream functions of vortex filament within the vortex core.
结果显示：涡管流函数是时间的周期函数，并被表征为一系列在涡核内均匀分布螺旋涡丝流函数的叠加。
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。
The results show that the vortex board has the same cooling performances as vortex tube, which will lay a foundation for further study on the turbulent flow board.
研究结果表明：涡流板同单管涡流管相比具有相同的制冷性能，为涡流板进一步研究奠定了基础。
Adjusting the cold gas fraction can control the performance target of vortex tube with fixed other parameters, which offers some referring data for practice applications of vortex tube.
在其它参数一定的情况下，可以通过调节冷气流分量来改变涡流管的性能指标。为涡流管的实际应用提供了一定的参考数据。
The flow rule and energy separation phenomena happened in vortex tube are unconventionally complex.
发生在涡流管内的流动规律以及由此所产生的能量分离效应异常复杂。
The vortex shedding characteristics of tube bundles in line arrangement subjected to gas liquid two phase cross flow were investigated experimentally.
对受气液两相流横向冲刷的顺列管束旋涡脱离特性进行了实验研究。
Though the structure of vortex tube is simple, the mechanism of energy separation is very complicated, so the researchers have not come to a conclusion.
尽管涡流管结构十分简单，但涡流管内能量分离物理机制极其复杂，研究者至今尚未达成共识。
This is caused principally by the vortex core of whirling water in the draft tube.
这种振动主要是由尾水管中的旋涡带所致。
The characteristic of heat transfer enhancement and the fluid flow of the fiat tube bank fin exchanger which has vortex generators on both sides of the fin were investigated by using numerical method.
采用数值模拟的方法，研究了流道内上下两肋片均布置有涡产生器的扁管管片式散热板芯的传热与阻力特性，并与流道单面布置涡产生器的换热板芯进行了对比。
The results showed that there was a mesoscale vortex tube along the mesoscale shear line on the middle low troposphere, and its altitude varied in a wave shape.
发现沿切变线走向有一条中尺度涡管，位于对流层中低层，高度呈波状起伏。
The unsteady flow in a draft tube of Francis turbine under the off-design operation is produced by the dynamic behavior of a helical vortex rope with the dead core.
混流式水轮机在非设计工况点下运行时，尾水管内部的非定常流动是由死水域和螺旋涡带的动态行为引起的，尾水管上部的螺旋涡带旋转引起流动的基频脉动。
The invention provides a method for enhancing the heat transfer capacity of latent heat type functionally thermal fluid by adopting a vortex enhanced tube and the vortex enhanced tube.
本发明提供一种采用涡强化管增强潜热型功能热流体传热能力的方法和涡强化管。
In case of the turbine is operated departing the optimum condition, the low presure and the vortex band will be established in the draft tube centre by the flow circulation.
水轮机在偏离最优工况运行时，水流的环量会使尾水管中心产生低压并形成涡带。
Besides, a notable vortex rope and a reverse flow structure exist in the draft tube in smaller wicket gate openings, which can easily lead to the instability in operation of the pump-turbine.
此外，发现开度较小时尾水管内存在明显的涡带和回流涡结构，容易导致机组运行的不稳定；
In the meantime, the helical vortex rope in draft tube is analyzed by t...
本文还根据计算结果分析了尾水管内非定常涡带产生和传播的原理。
In the meantime, the helical vortex rope in draft tube is analyzed by t...
本文还根据计算结果分析了尾水管内非定常涡带产生和传播的原理。
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