对流换热系数

综合界面换热系数由对流换热系数、辐射换热系数和修正换热系数三部分组成。

The comprehensive interface heattransfer coefficient consists of convectional heat transfer coefficient , radiate heat transfer coefficient and corrected heat transfer coefficient .

对流换热系数h小于500W/m2？

When the heat transfer coefficient of water fluid is less than 500 W / m2 ?

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

根据实际工程测试得到的水源工况参数，反推出不同流速下的污水对流换热系数hw及变化规律。

According to the actual project that tests fountain work condition parameters , sewage heat convection coefficient and change law are anti-deduced .

研究表明：在芯片材料一定的情况下，影响LED散热的主要条件为外部对流换热系数的大小，而外界环境温度的影响不大。

For the specifically chip , the primary influence factor of the LED thermal dissipation is the external convective heat transfer coefficient but the external environment temperature .

采用Wilson法对14个表面式冷却器元件进行了管内紊流强制对流换热系数的测定。

Measured the turbulent flow and heat transfer coefficients for fourteen different air coolers using Wilson method .

为了使反应器的温度保持在较为恒定的低温，外壁面的强制对流换热系数应大于84W/（m2·K）。

In order to keep the walls at low temperatures , the outer convective heat transfer coefficient must be larger than 84W / m ~ 2 · K.

针对中厚板在轧后层流冷却过程中采用传统自学习方法修正计算对流换热系数存在的不足，提出利用BP神经网络对自适应系统进行改进。

To deal with the deficiency of the self-learn method of heat transfer coefficient during plate laminar cooling process , a BP neural network was put forward to improve the self adapting system .

利用ε？NTU方法得到了纳米流体的对流换热系数关联式。

By ε? NTU method , the convective heat transfer coefficient and heat flow rate are obtained .

利用Matlab数值模拟求解非对称的基准物和被测物在不同的充气时间、有效传热面积、对流换热系数和不同的表面辐射率情况下的压力和温度随时间的响应；

The pressure and temperature responses are calculated and analyzed based on Matlab numerical simulation software for different parameters , such as charging time , heat transfer coefficient , effective heat transfer area and irradiation coefficient .

在此基础上分析了吸附床的导热系数、真空管管径、冷却水管侧的对流换热系数对系统COP的影响。

The effects of the conductivity coefficient of adsorbent , heat transfer coefficient of water fluid and diameter of tube on the performances of the system have been analyzed .

在比较宽广的参数范围内详细地分析了改变Ra数、管间距对管排中各个管的平均对流换热系数、局部换热系数以及管排的总对流换热系数的影响。

The effect of the Ra , distance between tubes to the average heat transfer coefficient , local heat transfer coefficient and the total heat transfer coefficient of the tube arrays were studied wildly .

冷水表面式冷却器的熵增分析与换热器强化传热评价准则研究采用Wilson法对14个表面式冷却器元件进行了管内紊流强制对流换热系数的测定。

Analysis of entropy increase in surface type air coolers and a performance evaluation criteria for enhanced heat exchangers Measured the turbulent flow and heat transfer coefficients for fourteen different air coolers using Wilson method .

实测了典型压力温度条件下2mm内径不锈钢圆管内超临界CO2对流换热系数。

An actual measurement was conducted of the supercritical CO 2 convection heat transfer factor in a round stainless steel tube of 2 mm inner diameter under typical pressure and temperature conditions .

基于试验结果，应用ANSYS软件对筒壁的瞬态温度场进行了有限元分析，同时探讨了选取不同热工参数及对流换热系数对计算结果的影响。

Based on test data , using ANSYS , FE analysis on transient temperature field of pipe is carried out , and the effects of choosing different thermal properties and convection coefficients on the solution are discussed at the same time . 7 .

珠江钢厂CSP热连轧层流冷却热过程模拟研究对不同尺寸的翅片管进行换热过程模拟计算，并根据结果总结出翅片管几何参数对对流换热系数的影响规律；

STUDY ON THE THERMAL SIMULATION OF RUN-OUT TABLE COOLING OF CSP ROLLING MILL AT ZHUJIANG IRON AND STEEL COMPANY The rib-tubes with different structure are also simulated and optimized on the base of the calculated results .

本文采用RBF神经网络对对流换热系数进行优化，弥补传统计算公式的不足，使终轧温度计算值逼近实测值，提高预设定精度。

This paper , using RBF artificial neural network , optimizes the convection heat transfer coefficient , making up for the defect of the traditional calculation formula , to make the finishing temperature be close to the measured value and improve the accuracy of presetting .

以80W大功率白光LED路灯作为研究对象，实验探讨了翅片热沉散热的均匀性，并得到了路灯所用翅片热沉的平均对流换热系数，通过CFD建模对路灯的温度场进行数值验证。

Thermal characteristics of an 80-W LED road lamp were studied . The averaging heat transfer coefficient of the fin heat sink used in LED road lamp were obtained by experiment , the temperature distribution of the fins were achieved by numerical simulation .

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.

基于滚珠丝杠热变形补偿措施的利弊分析，对空气外围冷却进行了计算分析，得出对流换热系数不得小于6w／m~2·k以及空气外围冷却法是一种既经济又有效的方法的结论。

After generalizing measures for compensation for thermal deformation , this paper analyzes the cooling with air concretely and reaches a conclusion that heat convection coefficient must be greater than 6w / m ~ 2 · k in order to use the method effectively .

实验结果表明，窄缝环形管内单相流动换热的Nu数与普通圆管内层流公式计算值相差较大，不能套用传统的单相流动换热模型来计算管内的对流换热系数。

The experimental result showed that the Nu number of the single-phase flow heat transfer in the narrow-gap circular pipes was higher than that in the common circular pipes , the traditional single-phase flow heat transfer model could not be used to calculate the convection heat transfer coefficients in pipes .

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

对流换热系数的反求方法

A Method of Inverse Evaluation for the Convection Heat Transfer Coefficient

对流换热系数测定的一种新方法

A New Method of Determining the Convective Heat - Transfer Coefficient

实验法求解汽车鼓式制动器对流换热系数

Solution for heat convection coefficient of automotive drum brake with experiments

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

气冷叶片表面局部对流换热系数的数值计算

Numerical calculation of local convective heat transfer coefficients over air-cooled vane surfaces

分析了对流换热系数、堆积状态等对床内最高温度的影响。

The influence of packed state on the maximum temperature was analyzed .

第三类边界条件中对流换热系数对非稳态导热问题解的影响

The Influence of Heat Transfer Coefficient on the Solution to unsteady Conduction