摘要
采用混合长度模型 ,用共轭数值计算的方法研究了具有轴向通流且内轴加热情况下的双旋转轴间的换热 ,得到了内轴、双轴间隙内的温度场 ,内轴外壁面的温度分布情况 ,内轴外壁面对流换热系数的分布情况 ,并与实验结果进行了比较 ,结果表明
The heat transfer in the air gap of two rotating cylinders was numerically studied based on the mixing length turbulent model. Temperature field of annulus, temperature distributions and heat transfer coefficient distributions on inner cylinder surface were calculated and compared with experimental results. The results show that the mixing length turbulent model is applicable for the simulation of heat transfer in the annulus between independently rotating cylinders.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2003年第8期691-695,共5页
Journal of Beijing University of Aeronautics and Astronautics
关键词
航空发动机
数值计算
传热
双旋转轴
混合长度
Axial flow
Computer simulation
Cooling
Cylinders (shapes)
Heat transfer
Heat transfer coefficients
Mathematical models
Turbulent flow