摘要
分析大容积自然对流层流流动和传热过程的机理 ,经过合理的简化假设 ,对边界层内流体的稳定流动和传热过程进行流动方程、传热速率方程、质量衡算方程和热量衡算方程描述 ,建立了相关的数学模型 ,从理论上推导出了该状况下的传热系数的数学关联式。经实验数据检验 ,理论值和实验值能较好地吻合 ,表明该模型具有一定的代表性和理论参考价值。
The paper analyzes the mechanism of flowing and conduction of heat by natural convection in space, through simplifying rationally,describes flowing equation, conducting heat equation,conservation of mass equation and conservation of heat equation of fluid nearby the wall and based on these, forms a relevant mathematical model. At first, the formula of coefficient of conduction heat is calculated in terms of theory. The theory and its application in practice yield a better combination.as is shown by the data. It indicates that, the model is typical and worthy of reference.
