查询词典 transfer coefficient

Simulation of heat transfer in the circular microchannel is conducted and it is revealed that heat transfer to the wall increases with the effect of axial conduction. The effect of thermal entrance is to increase the local Nusselt number. The smaller the velocity slip coefficient, the larger the asymptotic value of the Nusselt number.

对圆形微通道换热特性进行了数值仿真，结果表明，轴向热传导和入口效应增加了入口处的局部努塞尔数，速度滑移系数越小，局部努塞尔努塞尔数的渐进值越大。

The observed partition coefficient between the feed phase and the membrane phase, the stripping phase and the membrane phase, mass transfer resistance of boundary layer in strip phase inside the hollow fibers, boundary layer in feed phase and mass transfer resistance of the membrane phase were taken into account in the model equations.

该数学模型同时考虑了手性对映体在料液相、接收相与液膜相间的分配行为和料液相边界层、接收相边界层以及支撑液膜相的扩散阻力。

Thus LES is proved to be suitable to simulate the flow and temperature fields of large scale vortices with complex geometric boundaries. LES cooperated with the second order full extension ETG finite element method is applied to simulate the forced convection heat transfer around two square cylinders arranged side by side. While the boundary conditions are symmetrical, the time history and power spectrums of drag coefficient, lift coefficient, averaged Nusselt number at the wall, and the streamwise velocity and temperature on the symmetrical points are calculated. The results show that the power spectrums are all almost symmetrical.

应用大涡模拟与二阶全展开ETG有限元离散格式相结合的方法对间距比为1.5的条件下横掠并列双方柱强制对流换热问题进行了数值模拟，通过边界条件对称时，对并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数进行的时域分析和频域分析，得到了在对称边界条件下并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数的功率谱均基本对称的结论。

The concrete work and main contribution are as follows:(1) The index indicating transfer capability homogeneousness is defined, and the new terms like homogeneous grid, grid according with economic flow are put forward. These new concepts describe the degree in which transfer capability is utilized, and they provide the standard for ideal grid whose transfer capability and power generation dispatching economy are in phase. So, new idea is introduced in transfer capability analysis.(2) The multi-objective function with generation cost and transfer capability homogeneousness weighted is constructed. The relationship between system existing generation dispatching and transfer capability is revealed through comparative analysis between security economic dispatch and security homogeneous dispatch, and the variation rule analysis between generation cost and transfer capability homogeneousness with the change of weighting coefficient.(3) Example analyses demonstrate that the difference between specific power system with ideal instance can be identified effectively using the above concepts and method.

具体工作和贡献主要体现在：(1)定义了衡量电网输电能力均匀性分布的指标，提出均匀电网、符合经济流电网的新概念，以描述电网输电能力被利用的程度，并给出输电能力和发电调度经济性相协调的理想电网标准，在输电能力分析评判领域引入了新观点；(2)构造了发电费用与输电均匀性加权的多目标函数，通过对安全经济调度与安全均匀调度的对比分析，以及权系数变化过程中发电费用与输电均匀性的变化规律分析，揭示了系统现存发电调度与输电能力之间的依赖关系；(3)大量分析表明，利用上述概念和方法可有效识别系统在特定模式下与符合经济流电网的偏差程度。

This paper reports the current studies on the film cooling characteristics of single-row holes on flat plate at different blowing ratios, and analyzes the distributions of adiabatic film cooling effectiveness and heat transfer coefficient downstream the film holes.

对不同吹风比条件下的典型单排孔冷却结构的平板气膜冷却特性进行了实验研究，对冷却孔下游的气膜冷却效率及换热系数分布规律进行了分析。

To deal with the deficiency of the self-learn method of heat transfer coefficient during plate laminar cooling process,a BP neural network was put forward to improve the self adapting system.

针对中厚板在轧后层流冷却过程中采用传统自学习方法修正计算对流换热系数存在的不足，提出利用BP神经网络对自适应系统进行改进。

Results indicate that when the fiber is cooled in air(the heat transfer coefficient is 10 W·m-2·K-1),fiber lasers maximum output power is 105 W.

计算结果表明：自然对流的情况下，对流传热系数为10 W。 m-2.K-1时，光纤激光器的最大输出功率为105 W

On the basis of this review it is shown that, in the past two decades, plenty of investigations on flow regimes, phase holdups, mass transfer coefficient and bubble behaviors etc.

第一章较全面地综述了有关三相流化床流动域、相含率、质量传递、混合、热量传递、气泡行为和流动模型等方面前人的研究结果。

The uncertainty in measured convective heat-transfer coefficient on lifting body model was about 15%.

涂层热图技术，是把某些示温材料，薄薄地喷涂在模型表面，试验时，通过记录模型表面涂层

In this paper, the experimental set-up is described and experimental results of the height equivalent to a theoretical plate and the volumetric mass transfer coefficient of a rectifying section with the Sulzer BX packing are presented.

在本文，实验性设定被描述和高度等值的实验性结果到一个理论塔板和一个矫正的部分的容量传质系数与Sulzer BX包装提出。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。