查询词典 convection heat transfer

In order to study the geometry effect on the performance of the louvered fin heat exchanger, a two dimensional numerical model is established for air side heat transfer and fluid flow characteristics for a type of louvered fin surface and the related numerical simulation is conducted.

heat transfer and flow characteristics ； numerical simulation ；为研究百叶窗翅片几何结构对换热器性能的影响，采用二维计算模型，对空气流经一种类型的百叶窗翅片的传热和流动特性进行了数值模拟，获得了百叶窗翅片的温度场、速度场和流线图。

The steam side heat exchange is a forced convective film condensation process of the flowing vapor, containing noncondensable gases. The flow filed and heat transfer behavior vary sharply along the cooling surface.

汽侧的凝结换热是存在不凝结空气的汽气混合物的强迫对流膜状凝结换热，流动与传热特性沿冷却表面变化剧烈。

The model of CFB boiler components such as gas-solid separator, external heat exchanger, nonmechanical valves and heat transfer surfaces are considered in the overall model.

依据循环流化床锅炉各部件包括分离器、返料机构、外置式换热器及对流受热面的运行特点，对这些部件的模型也进行了讨论并给出。

For example, such heat transfer could create hotter or coolerblobs of material from the inner and outer boundaries of the fluid core, thereby perturbing the main heat-circulation pattern.

这样的加热转换器的能够产生更热或更冷的B，这个B是一种材料的，这个材料来自于内部和外部的边界，这个边界是FC的，因此就怎么着

Reflexible and focusing evacuated tube can be used in Solar Water Heater, the Heater transfer heat energy by water or by heat pipe.

摘 要 聚光型真空集热管，是在真空管外管下方的内壁镀以反射镜面。

Based on the deep research of structure characteristics of the shell-side of the shell-and-tube heat exchanger and laws of fluid flow and heat transfer, the concept of "sideling flow" in the shell-side is presented for the first time, which is relative to the flow states of the cross-flow, the longitudinal-flow and the helical-flow.

在上述壳程流体&斜向流&状态理念的指导下，首次研制开发了新型高效节能管壳式换热器—帘式折流片换热器，改进和发展了换热器壳程的结构形式，实现了壳程流体的斜向流动。

Structure characteristics of the shell-side of the shell-and-tube heat exchanger and laws of fluid flow and heat transfer are researched deeply, and ""sideling flow"" in the shell-side is researched especially.

相对于现有壳程流体横向流、纵向流和螺旋流的流动状态，换热器壳程流体的倾斜流动状态兼有壳程流体横向流动和纵向流动所具有的传热和阻降性能的双重优势，从而发展了管壳式换热器壳程结构设计理念。

Based on the principle of heat mass analogy,the convective heat transfer coefficient on rolling tire surface was simulatively investigated with a linearly moving rotary disc in a wind tunnel by using naphthalene sublimation technology.

根据热质比拟的基本原理，采用萘升华技术，在风洞中利用直线运动的旋转圆盘模拟研究了滚动轮胎表面的对流换热系数。

The heat transferor made of good quality aluminum to transfer heat faster and have more stable Performance.

配以优质铝材结合作散热器，使散热更快速、性能更稳定。

It points out: a rational arrangement of supplementary cathode can greatly uniformize the handsaw temperature duo to its double actions of redistributing heat source and reducing thermal radiation; less shield layers at the top of the furnace leads to more uniform horizontal temperature distribution. The horizontal plate between two rows of handsaws can enhance the radiative heat transfer at the center place, and therefore can reduce the temperature difference along both horizontal and vertical directions.

指出：辅助阴极具有重新分配炉内的热源分布和隔热保温的双重作用，合理添加辅助阴极对改善料筐内温度场的均匀性具有重要的作用；在渗金属炉的顶部减少辐射屏层数，可以在保证竖直方向满足工艺要求的同时改善水平方向的温度场的均匀性；料筐的几何结构对温度场有重要影响，锯条背之间的距离以60毫米为好；减少料筐材料的发射率有利于局部控制料筐温度。

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。