传热

The influence of those main design parameterssuch as evaporation saturation temperature t_s、heat dissipated power Q and charge ofworking fluid L on the temperature distribution of evaporation"s bottom and boiling heat transfer inside the evaporation has been calculated and analyzed concretely. The method that uses channels to enhance boiling heat transfer of evaporation"s bottom has also been analyzed and calculated preliminarily.

具体计算和分析了蒸发饱和温度t_s、散热功率Q和充液量L等主要设计参数对蒸发段底面温度分布和蒸发段内部沸腾传热特性的影响，对用槽道强化蒸发段底面沸腾换热也做了初步的数值计算和分析。

And the control volume finite difference method based on the boundary fitted curve line coordinate for the coupling model of whole system;(2)introduction of the relative temperature gradient function Sv , which is used to determine the evolution of crystal / melt interface shape, because the shape of the crystal / melt interface during crystal growth is an important factor in determining the crystal quality.

本文采用数值模拟方法，研究了传热对晶体生长的影响，包括以下几个方面：(1)建立了晶体的简化模型，熔体的简化模型和相应的数值计算方法；为了从总体上研究晶体生长的动态特性，首次导出了旋成体曲线座标系的SIMPLEC算法，并成功地应用于晶体生长的整体模拟。

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。

According to transfer heat theory, by analyzing the main problem existing in furnace wall of industrial boiler among three aspects of merterial, bricklaying means and structural design, the relational calculating formula and solving methods are given.

针对工业锅炉炉墙在材料使用、砌筑方法、结构设计三方面存在的主要问题，依据传热原理，分别加以分析研究，给出了相关的计算公式和解决方法，对改善炉墙的综合技术性能有指导意义。

The tubes' buddle of the traditional heat exchangers is composed of tubes with same diameter, which influences its efficiency at small Reynolds number because of the big fluctuation of the heat transfer coefficient led by the flux fluctuation.

传统的换热器都是采用同径管组成换热管束，因而，在流量波动的工况下，管程传热系数波动较大，对换热器的正常运行有影响。

It is indicated that the heat transfer enhancement of tube array by particles in flow is affected by tube type.

结果表明，换热管束的形式对颗粒的传热强化作用具有明显的影响。

Secondly, in the experiment, the characteristic of flux and spray cone of the nozzle is measured and analyzed. Two different kinds of packing, metal and plastic, is applied to evaluate the performance of the saturator. After comparison between the two, it can conclude that metal packing is better than plastic packing in all aspects, and more suitable for high pressure and temperature conditions.

其次，在实验中，测量和分析了喷嘴流量和雾化角的特性，应用金属和塑料两种填料对饱和器进行了实验研究，对比了两种不同填料的性能，发现金属填料比塑料填料具有更好的流体力学和传热传质性能，更适合于饱和器的压力和温度环境。

This work will provide a further theoretical and practical base to develop absorption chiller and enhance the heat and mass transfer in absorption process.

本文的工作，对于吸收式制冷机的发展，吸收过程中传热传质问题的强化等方面具有重要的理论和现实意义。

As previously stated, this is the use of different methods to calculate the coefficient of heat transfer procedures.

如前面所述，这是利用不同的方法来计算传热系数的程序。

The heat transfer coefficients and pressure drop data for different fin pitch F p and fin height F h were reported in terms of Colburn j -factor and Fanning friction factor f , as function of Re Lp .

在风洞试验台上对20种不同结构参数的扁管百叶窗翅片进行了传热和流动阻力性能试验，分析比较了翅片间距和翅片高度对其表面对流换热系数和空气阻力性能的影响。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。