查询词典 convection heat transfer

After reviewing and discussing a lot of radiation transfer models, the three-dimensional heat transfer in the test furnace was modelled by the D-T method, results are approximately agreeable to the experimental results.

在综述、分析了各种辐射换热模型之后，利用离散传递法计算了炉内三维辐射换热过程，得出了合理的计算结果，与试验结果比较接近。

These prove that the transfer function we deduce can describe the trends of pipe-shell heat transfer organization.The quality of steam generated from the first flash recipient is the main guide line for steam generator.

根据热平衡理论建立闪蒸室动态过程的仿真模型，应用整段线性化的简化方法得到闪蒸室产生蒸汽量与补给水流量、饱和器加热量的传递函数。

In order to reduce the external mass-transfer resistance to the transfer of heat liberated upon adsorption, the solid sample was spread in the form of single layers of crystals over the wide surface of an aluminum sample holder.

为了减少外部质量对吸附过程中所释放出的热传递的阻碍，固体样品须以一薄层的形式平铺在铝质的样品盛器宽大的表面上。

In order to reduce the external mass-transfer resistance to the transfer of heat liberate d upon adsorption, the solid sample was spread in the form of single layers of crystals over the wide surface of an aluminum sample holder.

为了减少外部质量对吸附过程中所释放出的热传递的阻碍，固体样品须以一薄层的形式平铺在铝质的样品盛器宽大的表面上。

Uses: The products are used in automotive cooling systems to prevent scale and rust in the generation, effectively reduce the heat sink on the accumulation of adsorbate to improve the efficiency of heat transfer cooler

产品用途：本产品用于防止汽车冷却系统中的水垢及铁锈的产生，有效减少散热片上的吸附物的堆积，提高冷却器的换热效率

Heat transfer performance of different backfill materials and temperature field variation of ground-coupled heat pump system are studied.

试验研究了两种不同回填材料地埋管换热器的热响应性能、地源热泵运行对地源温度场的作用。

The proposed method has the merit that the numerical characteristics of stochastic temperature field response can be obtained by analyzing the random temperature field just in one time.3. Perturbed numerical algorithm of nonprobabilistic convex set theoretical models on the temperature fieldThe uncertain parameters of physical parameters and initial boundary conditions of heat conduction are described by the convex model. The perturbation formulas of the upper and lower bounds of temperature field response with unknown-but-bounded parameters are given via the combination of matrix perturbation theory and the convex set theory model.4. Numerical analysis for transient temperature field with interval parametersConsidering the uncertainties of the transient heat transfer, the physical parameters and initial boundary conditions are regarded as interval variables.

该方法具有只进行一次随机温度场分析便可以获得其响应的数字特征的优点。3、温度场的非概率凸集合理论模型的摄动数值解法将结构导热的物理参数、温度场的初始和边界条件等不确定性参数以凸模型加以描述，基于矩阵摄动理论和处理不确定问题的凸集合理论模型的结合，导出有界不确定参数瞬态温度场响应所在集合的上、下界摄动计算公式。4、具有区间参数的瞬态温度场数值分析考虑结构瞬态热传导问题的不确定性，将结构各物理参数和温度的初、边值条件均视为区间变量。

On the basis of the constitution and work principle of general drum brake and the theory of heat transfer and finite element method, the process of heat's creating and dissipating is analyzed detailed, and the mathematics model of temperature rising calculation is built.

本文在对目前常用的鼓式制动器结构和工作原理进行分析的基础上，从传热学的基本理论出发，研究了鼓式制动器的生热、散热过程，并应用有限单元法建立了制动鼓温升过程的理论计算模型。

Higher temperature gradient, larger heat transfer coefficient and proper heat dissipation from the bottom of crucible are necessary for Bridgman method and also important for optimization of growth technique.

5较大的温度梯度，较大的换热系数和适量的底部冷却是坩埚下降法晶体生长的必备条件，也是工艺优化的重要方向。

Another feature of HEDDTB is that its tubes' buddle is composed of tubes with different diameters, which lead to a smaller fluctuation of heat transfer coefficient in the condition of fluctuating flux than that of the heat exchanger with tubes that has the same diameter in the case of low Reynolds number.

异径管束换热器的换热管束由直径不同的管子组成，这种换热管束在低雷诺数下传热系数随流量的波动相对同径管束而言较小，因此异径管束有一定的抗传热系数波动的性能，这使得换热器在流量波动的工况下工作性能稳定。

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。