Experiment of heat transfer in oscillating turbulent flow in a pipe with constant heat flux |
| |
Authors: | LI Ming-zhen |
| |
Institution: | School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
| |
Abstract: | Heat transfer characteristics of oscillating turbulent air flow in a pipe heated with constant heat flux were experimentally investigated.The experiments were performed over a range of 245.7 to 902 of the kinetic Reynolds number and 25 to 175 of the dimensionless oscillation amplitude.The effects of these two dimensionless parameters were analyzed.The results show that the cycle-averaged local Nusselt number increases with both the kinetic Reynolds number and the dimensionless oscillation amplitude.The space-cycle averaged Nusselt number also effectively increases with the kinetic Reynolds number and the dimensionless oscillation amplitude.Based on the experimental data,a correlation equation of the space-cycle averaged Nusselt number for air in terms of these two dimensionless parameters has been obtained. |
| |
Keywords: | oscillating turbulent flow heat transfer kinetic Reynolds number Nusselt number constant heat flux |
|
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |