thermal conduction

To determine extent of the effect of groundwater advection on U-type vertical underground heat exchangers, based on a mathematics model considering thermal conduction and groundwater advection, utilizes an overall solution to obtain the whole temperature field including fluid in pipe, pipe wall and surrounding soil.

为确定地下水渗流对U型地下埋管换热器的影响，基于热渗耦合作用下的数学模型，采用整体求解方法求得管内流体、地下埋管换热器及周围土壤的温度场数值解。

The method can directly solve various problems of thermal conduction, including mixed boundaries.

这种辛方法可直接求解各种边界条件问题, 包括混合边界条件.

The results of experiment are in a good accordance with the simulation results, thus verify the heat transfer law described by the analytical solution of the coupled thermal conduction and groundwater advection model of buried pipe.

研究得到的实验结果与数值模拟结果具有良好的吻合性，从而验证了地埋管热渗耦合模型的解析解所描述的热量传递规律。

Thermal conduction: thermal conductivity, and heat evenly applied to geothermal laying.

导热保暖: 导热性好, 散热均匀,适用于地热铺设.

Transfer of heat by conduction governs the thermal conditions within almost the entire crust of the earth.

传导传热控制着几乎整个地壳的热状态。

Under this circumstance, the main difficulty is encountered when calculating the temperature distribution of the cylinder since unless the environmental temperature is constant the function of temperature field can not be derived from the present thermal conduction theories.

现有的热传导理论只能解决环境（介质）温度恒定的情况下圆柱体的温度场分布求解，而对于这样的问题则无法处理。

The experimental results showed that the substrate of pyroelectric sensor could significantly affect the detectivity. The porous silicon dioxide and PET plastic film substrate could effectively decrease the thermal conduction and the thermal fluctuation noise of the pyroelectric element, increase the voltage responsivity and the detectivity obviously.

结果表明，多孔氧化硅和PET塑料可有效降低热释电元件的对外热传导，明显提高传感器的电压响应率和降低热释电元件的热噪声。

The thermal conduction of a composite medium with variable thermal conductivities is discussed.

讨论了可变导热系数的复合介质的传热性质.

The results show: for small scale oil tank, theory of one-dimensional thermal conduction model is avaiable.

实验结果表明：对小尺度油罐，一维热传导的理论是可行的。

Two latest means of measuring material's thermal conduction coefficient with THS and TPS are introduced.

介绍两种新的测量材料热传导系数的方法—瞬态热带法(THS)与瞬态平面热源法(TPS) .

The saponification reaction solution heated by microwaves in test tube placed in TEM cell was chosen as the experiment. The reaction-calculating mode was constructed. Maxwell's equations, thermal conduction equation and chemical reaction equation were solved together by FDTD and leapfrog technique.

本文以在TEM CELL系统中的微波加热乙酸乙酯皂化反应实验为例，用计算机构造了反应模型，利用FDTD法求解麦克斯韦方程组，热传导方程以及化学反应方程。

Thermal conduction in metals occurs like electrical conduction, through motions of free electrons.

热量传导在金属里发生象电子传导, 通过自由电子的行动.

Model Considering Thermal Conduction and Groundwater Advection of Soil Viewed as Porous Medium and Numerical Simulation on Soil Temperature Field Around Underground Heat Exchanger

多孔介质土壤热渗耦合模型及埋管周围土壤温度场数值模拟研究

This paper find a new temperature correction method through analyzing thermal conduction and convection of Hot Film.

本文通过对热膜的传热机理进行分析，找到一种温度修正方法。

The processes of thermal conduction in Raman cell pumped by laser pulse was simulated by computer. The behavior of stimulated Raman scattering pumped by train pulse doubled YAG laser in pure oxygen and O 2/ He mixture was studied experimentally.

对氧气的受激拉曼散射池的热传导过程进行了数值模拟计算，实验研究了序列脉冲倍频YAG激光器泵浦情况下氧气受激拉曼散射的热效应问题。

The thermo-physical and mechanical properties of Sip/ Al composite for electronic packaging application were studied by use of TEM observation, thermal expansion analyzer, laser thermal conduction analyzer and tensile test machine.

采用TEM观察、膨胀仪、激光导热综合测试仪以及万能电子拉伸试验机等设备及技术对复合材料进行研究。

For the lack of study on the effect of freeze-thaw on the mechanical properties of soil, a low cost and high degree of accuracy low temperature triaxial testing machine was developed based on theory of thermal conduction in this paper.

针对当前土冻融循环的力学效应研究相对薄弱的现状，本文运用导热学、机械学等理论自行研制了适合低端市场的低成本、高精度的高低温冻融三轴试验机。

In the paper, principle 、 technique and status quo of thermal conductivity measurement are recounted, various methods of solving heat conduction problem are summarized, study significance 、 study content and adopted technical course are indicated.

本文详述了导热系数测定原理、方法以及测定现状，综述了求解导热问题的各种方法，指出了课题研究意义、研究内容和拟采取的技术路线。

The mathematic model of thermal drive parts was deduced from the thermal conduction differential equation, and the model parameters were determined based on the experiments and step-by-step fitting method, then the combined control strategy of time optimum control and temperature double-ring control was adopted.

由导热微分方程推导热驱动部件的数学模型，在实验的基础上采用分段逐级拟合指数型函数的方法确定此模型的参数，然后采用时间最优控制和双环温度控制相结合的策略。

A new theory of thermal conduction, the reaction rate theory has been established.

本文从传质反应速率理论的基本思想出发，建立了一个新的传热理论&传热反应速率理论。

Taking into account temperature-dependent thermal conduction and heat capacity, a three-dimensional transient thermal finite element model has been developed.

在考虑随温度变化而变化的热传导、比热容等热物性参数的作用下，建立直接金属多道烧结的三维温度场有限元模型。

Including a thermal dispersion term in the conduction-convection heat transfer equation does not improve the model significantly.

在传导一对流热传输方程中加入热弥散项不能显著改善模型的预测结果。

Combining the model with the reaction rate theory of thermal conduction established by authors, a new thermal conductivity equation of liquid mixtures is given.

将该模型与溶液传热反应速率理论相结合，导出了一个新的多元液体混合物的导热系数方程。

An analytic thermal contact resistance model based on classical heat conduction theory and the advanced M-B fractal model is developed under some hypotheses.

结合分形接触理论和经典热传递理论，在W-M函数的改进M-B分形接触模型的基础上，建立了一定假设条件下的结合面接触热阻模型，并推导出具有尺度独立性的接触热阻理论解析公式。

Slab laser, especially diode-laser partially-end-pumped slab laser ( InnoSlab), is one of the most efficient ways to generate powerful laser output with excellent beam quality because of predominant thermal conduction.

板条激光器，尤其是半导体激光列阵部分端面泵浦混合腔板条激光器（InnoSlab），由于导热性好，容易得到大功率高光束质量的激光输出。

Taking into account temperature-dependent thermal conduction and heat capacity, a three-dimensional element model was established.

在考虑随温度变化而变化的热传导、比热容等热物性参数的作用下, 建立了直接金属多道烧结的三维有限元分析模型.

Thermal Conduction Error in Measuring Thin Plates Temperatures with Thermocouples

用热电偶测量薄板温度时的导热误差分析

Heat transfer within the substrate is by conduction alone. Thermal contact resistance at the droplet-substrate interface is included in the model.

数值模拟中对基体内部只考虑热传导作用，并且引入了液滴-基体界面处的接触热阻这一参数。

Lead as a coating material for the thermal conduction module c-ring.

热导枪钉模组涂层中所用的铅.

Taking a carborundum brick of which the thermal conduction coefficient was given as specimen, the measuring error of it is less than 8%.

通过测量已知导热系数的碳化硅砖的导热系数，得其误差小于8%；