查询词典 convection heat transfer

In the field of thermal analysis, combined with the control volume method and the spectral band model, the discrete transfer method is employed to solve the three dimensional transient radiation and conduction heat transfer in the cylinders of nongray semi-transparent media with semi-transparent and opaque surfaces.

在热分析方面，对同时具有半透明和不透明界面、非均匀第二类边界条件及第一和第三类非线性混合边界条件下非灰半透明介质圆柱体内的辐射与导热三维非稳态耦合换热，用离散传递法结合控制容积法和谱带模型进行了求解，得出了某空间光学系统外遮光罩光学窗口内的非稳态温度场。

First of all, the book detailed the Fluent software and its related theoretical knowledge, and then through a typical example to explain Fluent in heat transfer, mass transfer and flow field, such as practical engineering methods and techniques, including the moving parts of the velocity field simulation, UDF and the use of UDS, parallel computing setting, rendering the calculation region and the definition of boundary conditions, Tecplot' s data processing.

全书首先详细介绍了Fluent软件及其相关的理论知识，然后通过典型的实例来讲解Fluent在传热、传质及流场等实际工程中的应用方法和技巧，包括运动部件的速度场模拟、UDF和UDS的使用、并行计算的设置、计算区域的绘制和边界条件的定义、Tecplot的数据处理等。

In the aspect of microwave metallurgy,he set forth the mechanism of microwave metallurgy,put forward a theory of voluminal reduction in microwave,taded away the dependence relation between metallization rate and compression strength of pellets and eliminated the resistances of heat transfer and mass transfer,which can enhance the matallization rate of pellets to the utmost extent.

在微波冶金方面，阐明了微波冶金的机理，提出了微波体还原的理论，打破了球团金属化率和球团强度之间的依存关系，消除了自还原过程传热传质阻力，最大限度提高了物料的金属化率。

The result indicated that it was able much to improve the heat transfer and mass transfer of carbonating tower, as a result, the investment and maintenance of the tower would decrease obviously.

中试结果表明：其具有显著强化传热和传质的效果，且可投资省和节约大部分维修费。已通过省级技术鉴定。

It features a vertical structure with small flooring area to help flowair discharge of heat transfer oil in the boiler tubeheat transfer oil cannot easily be coked.

立式结构，占地面积小，并有利于导热油在炉管内的流通及排气，导热油不易结焦。

In experiment, The relation between the average heat transfer coefficient, the mass transfer coefficient of phosphate acid falling film and Re number were revealed.

通过实验，考察了磷酸液膜平均传热、传质系数与膜Re的关系。

Fluid flow, heat transfer and mass transfer in arc weld pool are an important factor which affects weld quality.

焊接熔池中的流体流动及传热传质过程是影响焊接质量的重要因素。

However, the influence system parameters on the transfer in narrow annuli and the mechanism of the heat transfer have not yet been understood very much.

然而，至今人们对窄缝传热的机理及影响因素仍未获得清晰统一的认识。

Presents a mathematical model described with temperature and relative humidity as driving potential for coupled heat and moisture transfer in porous wall materials. The model includes the transfer of liquid and vapor flow in porous materials simultaneously.

提出了一种以温度与相对湿度为驱动势的多孔墙体热湿耦合传递的数学模型，该模型同时考虑了水蒸气与毛细孔内液态水的传递。

The main applications are oil or gas transfer pipe; pipe for oil well bushing; transfer pipe for medium or low pressure water, gas, oil; pipe used in the structure of low and medium pressure boiler、engine boiler heat exchanger and condenser; pipe for construction、iron tower、frame structure、tubular pile、stanchion and other structures; pipe for mechanic、engine、automobile、apparatus and other mechanical accessories.

产品主要用途：石油天然气工业中输送油、气，水；油井套管；输送中、低压水、煤气，油；低压和中压锅炉及机车锅炉、换热器，冷凝器结构中；土木建筑、铁塔、网架、管桩、支柱及其它结构；机械、机车、汽车、器具，其它机械零件。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。