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辐射的热

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This makes more and more people pay more attention to studies and applications of numerical simulation in thermal recovery. In this research, we have developed a reliable mathematical model for thermal recovery, which takes a full consideration of the effect of viscos, gravitical and capillary forces on the three-phase flow of gas, water and oil, the effect of the temperature on the medium characteristics of liquid and solid, the phase equilibrium of gas-liquid in each component, heat transportation including connection, conduction and radiation as well as heat losses in both the overburn and underlying strata. In the space discreation of the mathematical model, we have proposed a new method based on the improvement of the conventional nine-points difference approximation, which has a higher difference accurancy.

本项研究以热力采油的主要机理为基础,充分考虑在粘性力、重力和毛管力作用下油水气三相流动,考虑温度对各种流体和固体介质物性的影响,考虑每一组分中汽液两相的相平衡,考虑热在地层中的传导、对流和辐射以及上下盖层的热损失,利用热力学第一定律、质量守恒定律和流体迁移定律,建立了正确可靠的注蒸汽数学模型;在对数学模型进行空间离散时,利用控制有限体积积分法,对以往的九点差分近似作了合理的改进,使其具有较高的差分近似精度:结果表明,该公式的近似精度要比以往文献中所给的九点差分近似精度高,可以认为,在油藏数值模拟中,如果遇到非均质情况,使用这种九点差分近似更合理。

One of the most fundamental concepts for understanding heat radiation is that of a black body.

理解热辐射的最基本概念之一是黑体概念。

The surface temperatures are determined by the exchange of heat radiation between the sun and the earth.

地表温度决定于太阳和地球之间的热辐射交换。

This is also referred to as radiant heat.

这也是所谓的热辐射。

In brief, average latent heat, sensible heat and soil heat flux is 40%. 50% and 10% of net radiation respectively.

就平均状况而言,潜热、显热和土壤热通分别占到净辐射的40%、50(来源:A4fBC论文网www.abclunwen.com)%和10%。

Lin Jingshan the company's Chief Engineer had personally on three of the heater heating method (commonly known as Little Miss Sunshine) to compare the speed of the hot and cold: The hand on heater in front of about 60 centimeters, to be followed by access to power: iodine-tungsten lamp quartz tube the thermal radiation immediately communicated to the hand; electric heating film about two to three seconds will be communicated to the hot hand; and the hot filament resistance will require more than 6 seconds.

该公司总工程师林景山曾亲自对三种加热方式的取暖器的冷热速度进行比较:将手放在取暖器前方60公分左右,然后依次接通电源:石英碘钨灯管的热辐射即时传达到手上;电加热膜约二、三秒钟将热传达到手上;而电阻丝加热的则需要6秒以上。

The thermograph obtained by a thermal imaging system is only the distribution of radiant temperature of the surface of measured devices,not the true temperature.

用红外热成像系统直接获得的热像图,是被测器件表面辐射温度的分布,并不是真实温度的分布。

A coupled-unstable-equation-system of the heat, moisture and air transfer of the third boundary condition in the building walls with one dimension were developed, and software was developed using numerical simulation.

为了研究建筑墙体的热质耦合传递规律,该文考虑了太阳辐射的影响,建立了在第三类边界条件下建筑墙体非稳态热、湿及空气渗透耦合传递的物理及数学模型,开发了相应的数值模拟计算软件。

Canopy transpiration and latent heat transfer progress have been specially treated in themacro-thermal-environment simulation program,by which,the effects of outside solar radiation andair temperature,greenhouse insulation,and backwall and floor on the macro-thermal-environmentcan be simulated.

根据上述模型就室外太阳辐射、室外气温、温室的保温、温室后墙和地面的蓄放热等对生态温室主体热环境的影响进行了模拟,证明温室透光盖层在白天损失了大量热量,建议改进盖层的透光保温综合性能;一面坡温室后墙和地面对室内的放热贡献相近,但后墙向外界的热损失是其向室内放热的2倍左右,其具体大小还与后墙的尺寸等因素有关。

Presently there exists no convenient method to determine the baking temperaiure for glass vacuum chamber which uciuall plays an important role in the acement of required vacuum circumstance in high-vacuum system made of glass,In this paper approximate method was represented to calculate the baking temperature of glass surface by the emissivities of appropiate materinl surface,determining the baking temperature difficult to be tested by the relation ship recommanded by the paper and the indication of an ausa...

在高真空系统中,真空室的烘烤温度对获得要求的真空氛围有着重要的影响,对于玻璃制作的真空系统,目前对于该温度的确定缺少一种较为简单易行的方法,本文基于辐射换热分析提出了具有通用性的利用材料表面辐射率来计算玻璃表面烘烤温度的近似方法,将这难以直接测量的温度通过附设热电偶的示值和本文推荐的关系式来确定,于实际情况相比较为吻合。

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推荐网络例句

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。