首先在总结前人研究的基础上,采用改进后的试验研究方法,在多相流动热态试验台上对水平管加热段内空气煤粉混合气流的传热特性进行了实验研究,得出了热空气与煤粉在加热段内的换热准则Nu数,然后进行相应的误差分析和建立相应的数学模型,应用实验得出的换热准则Nu数,采用数值模拟的方法对空气煤粉气流在水平加热段内传热特性进行了计算,结果表明试验得出的Nu数具有较高的精度 First of all, on the basis of summarizing the previous studies, the improved experimental method was used to study the heat transfer characteristics of air-coal mixed gas flow in the heating stage of horizontal tubes on a multiphase flow test bed. The Nu number of heat transfer criterion for hot air and pulverized coal in the heating zone is obtained. Then the corresponding error analysis and corresponding mathematical model are established. Nu number of heat transfer criterion obtained experimentally is used to simulate the air  coal The heat transfer characteristics of the powder airflow in the horizontal heating section were calculated. The results show that the Nu number obtained from the experiment has higher accuracy