• 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单片机涡流控制系统设计包括系统硬件软件的设计。

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  • 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砂尘分离效率计算方法

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  • 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.

    进入槽口水流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

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  • The process of designing and building of vortex tube experimental system is introduced in detail. The experimental system includes air feed system and mainframe.

    详细介绍了涡流实验设计搭建过程,实验台包括供气系统主机两个部分。

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  • 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中心区域气流膨胀涡流产生制冷效应一个重要原因

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  • 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.

    结果显示函数时间周期函数,并被表征一系列在涡均匀分布螺旋涡函数叠加

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  • 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.

    研制了不同热端长度涡流管,空气作为工作介质通过实验研究了热端管长度涡流能量分离性能影响

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  • 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.

    研究结果表明涡流同单涡流管相比具有相同制冷性能涡流板进一步研究奠定了基础。

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  • 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.

    其它参数一定情况下,可以通过调节气流分量来改变涡流性能指标涡流管实际应用提供了一定参考数据

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  • The vortex shedding characteristics of tube bundles in line arrangement subjected to gas liquid two phase cross flow were investigated experimentally.

    受气横向冲刷顺列管束旋涡脱离特性进行了实验研究。

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  • 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。

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  • This is caused principally by the vortex core of whirling water in the draft tube.

    这种振动主要水管中的旋涡带所致

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  • 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.

    采用数值模拟方法,研究了流道内上下两肋均布置产生器扁管管片式散热板芯的传热阻力特性,并与流道单面布置涡产生器的换热板芯进行了对比。

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  • 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.

    发现沿切变线走向中尺度位于对流层中低层高度起伏。

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  • 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.

    混流式水轮机非设计工况运行时,尾水管内部定常流死水域螺旋动态行为引起的,尾水管上部的螺旋涡带旋转引起流动的基频脉动。

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  • 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.

    发明提供一种采用强化增强潜热功能流体传热能力方法涡强化管。

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  • 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.

    水轮机偏离最优工况运行时,水流环量使尾水管中心产生低压形成

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  • 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,发现度较小时尾水管内存在明显回流结构容易导致机组运行不稳定

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  • 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,发现度较小时尾水管内存在明显回流结构容易导致机组运行不稳定

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