When the Reynolds number for Bingham fluid is larger than a certain value, the flow will transfer from the laminar state to the turbulent state as Newtonian flow does.
和牛顿流体一样,宾汉流体的雷诺数超过一定值后,其流动将从层流向紊流过渡。
The turbulent convection heat transfer of transpiration cooling in a horizontal rectangular channel was investigated experimentally and numerically.
本文对水平矩形槽道内湍流对流换热与发汗冷却进行了实验研究和数值模拟。
The time-height variation of turbulent intensity in the inversion layer is incontinuous, the transfer of momentum and heat is gusty with time and sandwich with height.
逆温层内部湍流强度的时-空变化是不连续的,动量和热量的输送在时间上是阵性的,在高度上是分层的。
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。
The complex heat transfer of turbulent natural convection combined with surface radiation in open cavities is analyzed by numerical method.
用数值方法分析了开口空腔中的湍流自然对流与表面辐射相互耦合的复杂传热。
So the turbulent diffusivity in gradient transfer model of scalar should be a second order tensor.
因此,在用梯度准则模拟湍流输运时,其输运系数应是一个二阶张量。
In mine mass transfer the longitudinal dispersion coefficient is by far greater than the turbulent diffusion coefficient.
在井巷紊流传递过程中,纵向弥散系数远远大于紊流扩散系数。
A numerical study is carried out for the combined heat transfer of turbulent natural convection and surface radiation in an two-dimensional open square cavity with only one heated wall.
对具有单个加热壁的二维方形开口空腔内的湍流自然对流与表面辐射的耦合传热进行了数值研究。
The relation between global transport properties and the external driving forces is the focus of interest for various turbulent flows and heat transfer.
湍流是极为普遍的流动现象,整体传输特性和外部驱动力之间的关系是各类湍流流动和传热问题研究的中心问题。
Wall heat transfer fluctuations have been measured using a platinum film resistance thermometer in forward facing steps induced shock wave and turbulent boundary layer interaction fields.
用铂膜电阻温度计测量了前向台阶诱导激波与湍流边界层相互作用流场中的表面热流率脉动。
The theoretical analysis and numerical calculation are carried out for turbulent convection mass transfer in heated tubes with consideration of internal mass sources under constant properties.
在常物性条件下,考虑有内部质量源时,对水中的金属腐蚀物杂质在加热管道中的紊流对流传质进行了理论分析和数值计算;
The calculation results of the model show that the addition of solid particles makes the fluid turbulent flow enhance, the heat transfer enhance and the wall temperature decrease.
由模型计算结果可知,固体颗粒的加入使流体的湍流程度增强,强化了传热,降低了壁温。
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。
Based on turbulent diffusion theory and the mechanism of liquid-gas interfacial mass transfer, a conceptual model of turbulent re-aeration process is proposed.
本文根据紊动扩散理论及气液界面质量传递过程,提出了紊动水体复氧过程的概化模型。
Heat transfer in turbulent free swirl flow produced by a new developed swirl generator in the inlet region of a smooth pipe has been studied.
研究由一种新的旋流发生装置所形成的自由旋流在光滑管入口段的传热情况。
In this paper, some characteristics of turbulent exchange in surface layer, the austausch coefficient, heat flux transfer, etc.
本文对于北京冬半年近地面层湍流的特性:湍流系数及湍流热通量等,用各种方法进行计算和比较。
The hollow interchange disk can be used to strengthen flows heat transfer under turbulent conditions such as improve working conditions of ethylene cracking furnace, also can be used for flow mixing.
该中空立交盘可用于强化湍流条件下流体传热如改善乙烯裂解炉工况,亦可用于流体混合。
An engineering formula for estimating turbulent base heat transfer of hypersonic flow is given on the basis of flight data and the experimental results in shock tunnel.
本文综合飞行数据和激波风洞中的实验结果,给出了一个计算湍流底部热的工程方法。
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。
The article is based on coherent structures of turbulent boundary layer theory, studies the feedback control model of turbulence, and inputs control system to get the enhancement of heat transfer.
本文依据湍流边界层拟序结构理论的基础,研究湍流反馈控制模式,在湍流流场中输入控制,达到强化传热的目的。
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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