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基本概念培训手册(Watt.sec)/(kilogram.degreeC)Watts/(meter.degreeC)ANSYS中的典型物理量(国际单位制)ANSYS中的典型物理量(中的典型物理量Watt/(meter2.degreeC)kilogram/(meter3)DegreesC(orK)degreeC/meterWatt/(meter2)????????对流换热系数热传导基础?????????内部热生成热传导率温度梯度热流量温度密度比热热流?Watt/(meter3)WattsMarch30,2002Inventory#0014452-2HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0培训手册–传导-两个良好接触的物体之间或一个物体内部不同部分之间由于温度梯度引起的能量交换。度引起的能量交换。–对流-在物体和周围流体之间发生的热交换。在物体和周围流体之间发生的热交换。–辐射-一个物体或两个物体之间通过电磁波进行的能量交换。一个物体或两个物体之间通过电磁波进行的能量交换。热传导基础?在绝大多数情况下,我们分析的热传导问题都带有对流和/或辐射边界在绝大多数情况下,我们分析的热传导问题都带有对流和/条件。条件。?热传递有三种基本类型:热传递有三种基本类型:热传递的类型March30,2002Inventory#0014452-3HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0培训手册?T=heatflowrateperunitareaindirectionn?nq*传导引起的热通量流由传导的傅立叶定律决定:传导引起的热通量流由传导的傅立叶定律决定:Knn=thermalconductivityindirectionn?T=thermalgradientindirectionn?n热传导基础传导??负号表示热量沿梯度的反向流动例如,热量从热的部分流向冷的部分).(例如,热量从热的部分流向冷的部分).T=temperatureq*=?KnnWhere,TdTdnnMarch30,2002Inventory#0014452-4HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.0HEATTRANSFER6.