中文摘要：

在微尺度条件下,由于对流传热和燃烧过程耦合发生在很小的范围内,因此微燃烧室内部的对流换热问题比较复杂。根据微燃烧室内部流动、传热和燃烧过程模拟计算的结果,采用无量纲分析方法,计算出表征距入口x处各通道截面平均对流换热强度的努塞尔数Nux,并分析入口参数对Nux的影响。对多组计算结果进行多元回归拟合,最终得到各截面平均Nux与雷诺数Rex、普朗特数Prx和无量纲变量θ之间的函数表达式。

英文摘要：

In the micro-scale conditions,due to the heat transfer coupling with the combustion process within the micro-combustor,the convection and heat transfer in the micro-combustor were rather complicated issues.Based on the simulation results of the flow,heat transfer and combustion process in the micro-combustor.Dimensionless analysis method was used to calculate the dimensionless Nux number which described the convection and heat transfer intensity in the channel cross-section away from the entrance at x.Then effects of inlet parameters on the dimensionless Nux number were analyzed.The formula between the dimensionless variables θ and average Nux,Rex,Prx numbers in the channel cross-section was obtained by multiple regression analysis.