Study on the Convective Heat Transfer and Fluid Flow of Mini-Channel with High Aspect Ratio of Neutron Production Target

被引:5
作者
Sun, Peng [1 ,2 ,3 ]
Lu, Yiping [1 ]
Tong, Jianfei [2 ,3 ,4 ]
Lu, Youlian [2 ,3 ]
Liang, Tianjiao [2 ,3 ]
Zhu, Lingbo [1 ,2 ,3 ]
机构
[1] Harbin Univ Sci & Technol, Sch Mech Power Engn, Harbin 150080, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[3] Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China
[4] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China
关键词
rectangular channel; parallel plates; mini-channel; single-phase heat transfer; turbulent flow; critical Reynolds number; entrance region; spallation target; FRICTION;
D O I
10.3390/en14134020
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
In order to provide a theoretical basis for the thermal design of the neutron production target, flow and heat transfer characteristics are studied by using numerical simulations and experiments. A rectangular mini-channel experimental model consistent with the geometric shape of the heat dissipation structure of neutron production target was established, in which the aspect ratio and gap thickness of the test channel were 53.8:1 and 1.3 mm, respectively. The experimental results indicate that the critical Re of the mini-channel is between 3500 and 4000, and when Re reaches 21,000, Nu can reach 160. The simulation results are in good agreement with the experimental data, and the numerical simulation method can be used for the variable structure optimization design of the target in the later stage. The relationship between the flow pressure drop of the target mini-channel and the aspect ratio and Re is obtained by numerical simulation. The maximum deviation between the correlation and the experimental value is 6%.
引用
收藏
页数:15
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