基于热力学和基本概念和传热学基础理论 ,从传递的场理论出发 ,对于对流换热过程中的传递特性和规律进行了分析研究 ,推导和建立了常物性不可压缩层流中对流换热过程的传递微分方程 ;分别选取一维流动和二维流动的 2个简单对流换热例子进行传递函数的求解 ,其结果与热力学求解的结果完全相同 . Based on the basic concepts of thermodynamics  and  and the basic theory of heat transfer, starting from the field theory of , the transfer characteristics and laws of  in the process of convection heat transfer were analyzed and studied. The general physical incompressible laminar flow Convection differential equations for the convective heat transfer process. Two simple convective heat transfer cases, one-dimensional flow and two-dimensional flow, respectively, are used to solve the transfer function. The results are exactly the same as the thermodynamic results.