In order to study the fuel mass flow rate regulation characteristics of tube-in-hole for solid fuel ramjet, the flow field of turbulent combustion was numerically analyzed.
为了研究固体燃料冲压发动机内部套管结构调节燃料流量的特性，对某模型发动机的湍流燃烧流场进行了数值分析。
The characteristic of turbulent heat transfer and flow resistance with multi-longitudinal vortexes in tube is numerically analyzed.
对多纵向涡对管内湍流换热和流阻特性进行了数值分析。
Using ga stainless steel tube or a copper tube, the flow rate in the tube is turbulent.
使用不锈钢管或使用铜管，管内流速都是紊流。
The results show that the multi-longitudinal vortexes could enhance the turbulent heat transfer in tube markedly and the flow resistance increase is similar to heat transfer enhancement.
结果表明，多纵向涡可明显强化管内湍流换热，其流阻增加与换热增强相当。
The cooling mechanism of the turbulent flow cooler is studied. The choosing range of the input Angle and output Angle of turbulent tube, the diameter of the throat mouth and water gap are discussed.
研究湍流管式冷却器的冷却机理和设计问题，讨论了湍流管入口角、出口角、喉口直径和水缝的选择范围。
When the tube is biforked, the additional turbulent flow will be produced, which will improve the flame transmission speed in gas explosion.
管道分叉时，产生附加湍流，使瓦斯爆炸过程中火焰的传播速度迅速提高。
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。
For the static tubular mixer with tube-arrays, semi-uniform and isotropy turbulent flow takes place using the effect of boundary layer in the arrayed tube, which can achieve rapid mixing.
管束列管式静态混合器利用管道边壁的边界层作用，强化形成准均匀各向同性涡旋，实现快速混合。
The conventional method of heat transfer enhancement for turbulent flow in tube is to increase the heat transfer area, but it will increase the pressure drop across the tube significantly.
管内湍流强化传热方法一般是增加壁面换热面积，但这会显著提高管内流动阻力。
D. tubes, with the results showing the convective heat transfer characteristics depending on the laminar and turbulent flow regimes, tube sizes, and mean temperatures of the suspensions.
开展了小圆管内纳米颗粒悬浮液对流换热及其表面改性影响的实验研究，揭示了流态、流体温度、管道尺寸对流动与对流换热规律的影响。
D. tubes, with the results showing the convective heat transfer characteristics depending on the laminar and turbulent flow regimes, tube sizes, and mean temperatures of the suspensions.
开展了小圆管内纳米颗粒悬浮液对流换热及其表面改性影响的实验研究，揭示了流态、流体温度、管道尺寸对流动与对流换热规律的影响。
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