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Analyzing the heat transfer of thermometric sensor for liquid steel,a relevant finite element model is developed for the sensor.

在分析钢水测温传感器传热过程的基础上,建立了测温传感器的有限元模型。

The one key to resolve the heat-transfer effect lies in making the refrigerant circulating rapidly and completely, the other one lies in decreasing the thermoresistance of evaporating section.

解决该散热装置的关键之一在于使载热介质迅速完全地循环,关键之二在于减小蒸发段的传热热阻。

From the basic principle of heat transfer, the network topologic method is used to calculate the distribution of steady-state temperature field in electrical machines with forced cooling system in this thesis.

本文从传热学的基本理论出发,用网络拓扑法对具有强迫通风系统的电机温度场进行了分析和计算。

A three-dimensional mechanical model and a transcalent model of bolted flange joint were built.

建立了螺栓法兰联接的三维力学及传热学模型,在考虑垫片非线性和接触问题的基础上,研究了法兰的瞬态温度场分布以及温度场的变化对垫片和螺栓载荷的影响。

Energy saving;strengthened heat transfer technology;radiation section;transversally corrugated tubes;thermal calculation

节能;强化传热技术;辐射室;横纹管;热力计算

Heat tramsfer and hydraulic characteristics of transversally corrugated tubes.

贾檀,陆应生,庄礼贤,等。横纹管的传热与流体力学特性研究。

At last the paper realized the advantages and disadvantages of passive solar building and adnvanced some suggestions in future research. From another point, the paper logged the process of the building of the experimental equipment and the mounting of the measurement equipments that accumulated some operating experimence.Carrying experiments, calculating and analyzing the experimental data for more than 2 years, the paper gained some constructive conclusions. In winter the indoor air temperature and RH are lower than comfort criteria, but people feels very comfortable in the passive solar house. The thermo-circulation formed by Trombe wall play an important role in improving indoor air temperature and RH. Based on the analogy analysis theory, the natural convection heat transfer in the air gap can be treated as superposition of two natural convection heat transfer processes occurring over isolated isothermal vertical flat plate, in this case namely the massive wall and glazing. Two empirical formulas for Q and Nu are obtained. The investigation shows that the optimal time to open the damper should comply with the period that the thermo-circulation happens which can be controlled by thermal response characteristics of Trombe wall surface temperature and air temperature in the air gap.

经过两年多的实测和计算,根据传热学、流体力学、统计学等学科的基础理论,对大量数据进行整理归类、分析讨论,主要得到如下结论:(1)冬季,含有特朗贝墙体的被动式太阳房室内热湿环境较舒适性标准偏低,但人体感觉比较舒适,特朗贝墙体形成的热循环通风在调节室内温度和相对湿度方面起到很大的作用;(2)特朗贝墙体空气间层自然对流可以看作是两个等温独立大平板的自然对流换热过程的叠加,通过与大平板自然对流理论类比获得了计算热循环过程中对流换热量的经验公式;(3)特朗贝墙体通风口的启闭可以根据玻璃幕墙内壁面温度、蓄热墙体外壁面温度和空气间层进出口空气温度之间的关系来进行控制,从而有效地阻挡冬季冷循环的发生;(4)夏季,如没有有效的通风降温措施,被动式太阳房内会产生明显的过热。

The thesis makes a wellbore pressure and temperature distribution allegiance calculation forecasting model which takes the seawater temperature field and coefficient of heat transmission into account based on the study of the related theories. And the thesis makes a research of the impact of Reynolds Number upon drag coefficient based on the classical Tunner Droplet Model, and makes the critical flow rate model of liquid lift for Ya 13-1 gas field from the perspective of security.

通过理论研究,建立了考虑海水温度场及传热系数的适用于崖13-1气田的井筒压力、温度分布耦合计算预测模型;从气井积液机理研究出发,建立了高低气液比携液临界流量的计算模型,在高气液比携液临界模型的推导中,以经典的Tunner液滴模型为基础,研究了雷诺数对曳力系数的影响,从安全考虑建立了适用于崖13-1气田的携液临界模型。

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。

The results indicate that: 1 the system can directly show the activity of fluid field and satisfy a certain need; 2 The distribution of particle concentration in pipe is unequality and the unequality degree varies with the cent of volume and regime fl...

试验结果表明:1该系统能直观显示被测流场的运动状态,满足一定流场的测量要求;2颗粒在管内的浓度分布是不均匀的,随颗粒的体积分率和流型的变化而变化;3所得的试验结果能够解释液-固流化床换热器的强化传热和防除垢机理。

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推荐网络例句

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。