热系数

建筑外表面对流换热系数的CFD模拟

CFD Simulation of Convective Heat-Transfer Coefficient of External Surfaces of Buildings

根据现有淬火介质冷却速度特性曲线，建立数学模型，计算出换热系数h，从而计算出冷却过程的时间，为完善和发展双介质淬火工艺开拓了新的途径。

In this paper a mathematical model is proposed for calculating the heat transfer coefficient on the basis of avaiable cooling rate curves and the time of cooling process is worked out .

在Cheng所得到的高压气体淬火过程中非线性表面换热系数的基础上，用有限单元法对钢淬火过程的温度场与相变耦合问题进行了模拟计算。

On the basis of nonlinear surface heat-transfer coefficient obtained by Cheng during the gas quenching , the coupled problem between temperature and phase transformation during gas quenching in high pressure was simulated by means of finite element method .

利用直观的流动扰动因子M修正传热系数k，研究热流体进口温度和流量发生阶跃变化时PSR的响应时间；

Heat transfer coefficient k is corrected by use of flow disturbance factor M.The researches of response characteristic of PSR during different conditions , in which the input temperature or mass of gas is changed suddenly , are carried out .

计算了多种工况参数下PM发动机缸内温度、压强变化规律，分别讨论了压缩比、过量空气系数、多孔介质温度、多孔介质体换热系数等参数对多孔介质发动机燃烧过程的影响。

Pressure and temperature in the PM engine are calculated under various working conditions . Influences of operating parameters such as compression ratio , equivalence ratio , temperature and volumetric heat transfer coefficient of the porous medium on combustion process of the PM engine are analyzed .

对于管内径为0.27mm的微细圆管，当进口Re高于104时，浮升力的影响可以忽略，对流换热系数的变化完全由物性的变化尤其是cp的变化导致。

For the tube with the diameter of 0.27 mm , when the inlet flow Re exceeds 104 , the experimental result indicates that has not influence . The variation of convection heat transfer coefficient is attributed to the variation of thermal properties , especially the variation of cp.

在一堆凝固传热条件下，通过多点非线性估计方法计算得出界面换热系数与界面处冷铁一侧温度的关系（h-T（ic））曲线。

Under the condition of unidirectional heat flow , the correlation of interracial heat transfer coefficient with the chill surface temperature ( h-T_ ( ic )) which was established in terms of nonlinear estimation technique has been used in the two dimensional solidification simulation .

对实验数据分别用有限差分法及正交配置法进行处理，得到了固定床一维给热系数h、二维径向传热参数Ker、hw与雷诺准数Re的关系式。

The treatment of experimental data is on the basis of orthogonal collocation , the correlations between the radial effective conductivity , the wall heat transfer coefficient of two dimension model and the wall heat transfer coefficient of one dimensional model and particle Reynolds number are obtained respectively .

水泥窑窑体表面换热系数的计算方法

A method for calculating heat transfer coefficient of cement kiln surface

离散孔板气膜冷却对流换热系数的计算

Calculation of Heat Transfer Coefficients of Discrete Hole Board Film Cooling

气膜冷却平板换热系数的实验研究

Experimental investigations on the coefficients of heat transfer of film cooling

红外热波成像法测量薄板局部换热系数

Measuring local heat transfer coefficient by infrared thermal wave imaging

在工艺参数优化时，换热系数是一个理想的目标变量。

The heat transfer coefficient is a perfect object variable to optimize .

植草18个月后，香根草绿篱基本形成；建立了测量导热系数和对流换热系数的实验设备；

The vetiver hedges were basically established after 18 months of planting .

多孔铝对流换热系数的反演分析

Inversion analysis of volumetric heat transfer coefficient for porous aluminum

中厚板层流模型中水冷换热系数参数回归及优化

Regress and optimization of heat transfer parameter model in laminar cooling system

换热系数随雷诺数的增大而明显增大，其余三个因素对其影响较小。

Reynolds number has large effect on Heat transfer coefficient .

阵列射流冲击冷却换热系数的数值研究

Numerical research on jet arrayed impingement cooling heat exchange coefficient

确定墙体内表面换热系数的实验方法

Experimental Analysis for Deriving Wall Surface Heat Transfer Coefficient

立轴平面磨削冷却对流换热系数的实验测定

Measurement of Heat Transfer Coefficient of Coolant Flow during Vertical Spindle Surface Grinding

目前世界某些国家和地区已制定了相应的对策。建立了测量导热系数和对流换热系数的实验设备；

Some countermeasures have been established in some countries .

有液滴卷吸时的环状流换热系数的预测模型

Prediction model of annular flow heat transfer coefficient when consider liquid drop entrainment

双辊薄带-铸辊界面平均换热系数的测定

Measurement of Average Interfacial Heat Exchange Coefficient Between Twin-roll Thin Strip and Roll

多斜孔气膜冷却壁表面换热系数实验研究

Experimental investigation of heat transfer coefficients on the inclined multihole film cooling wall

气膜冷却涡轮叶片前缘外换热系数的实验研究

Experimental investigation of external heat transfer coefficients on film-cooled turbine blade leading edge

对流换热系数是换热器（如电厂锅炉中的省煤器、空预器，冶金炉中的各种换热设备及其日常生活中的各种热水器等）设计和校核的重要参数。

The coefficient of convective heat transfer is important to design a heat exchanger .

循环流化床锅炉屏式受热面换热系数的测量与分析

Measurement and analysis of heat transfer coefficient for platen heating surface in CFB Boilers

获得了各种工程实际工况下的冷凝换热系数，还获得了冷凝换热系数随热流密度、蒸汽压力变化的规律以及沿2.5米长冷凝面长度上的变化规律。

The condensation heat transfer coefficients were obtained under practical operating conditions in industries .

应用傅立叶解析的参数估值法&固定床流体与颗粒间给热系数的测定

Parameter Estimation by Fourier Analysis & Determination of Gas-Particle Heat Transfer Coefficient in Packed Bed

采用对流换热系数和热物性为常数的简化处理会引起很大误差。

The simplified assumption of constant convective coefficient and thermophysical properties will lead great error .