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Study on hydrodynamic effects in longitudinal forced convection for high power laser amplifier
Author(s): Hao Li; Jin Yu; Yong Liu; Jianguo He; Yanzhong Chen; Wenqi Ge; Zeqiang Mo; Hao Liu; Lianwen Fan; Jinduo Wang
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Paper Abstract

Thermal effect becomes more prominent in the laser gain medium, to overcome this problem, the forced convective heat transfer with reliability and durability is widely used. The hydro-structures of dimensions of the flow channel affect the thermal performance immediately and efficiently. In this paper, with proposed cooling configuration based on longitudinal forced convective heat transfer, the factors of flow rate, state of flow field and surface roughness are investigated. The results reveal that fully developed flow state, higher flow rate and rougher surface lead to a better cooling capability. In the simulation results with 30 L/min flow rate, the calculated averaged convective heat transfer coefficient is as high as 104 W/m2 ·K, and with slightly fluctuations in fully developed flow period.

Paper Details

Date Published: 29 March 2019
PDF: 6 pages
Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 1104612 (29 March 2019); doi: 10.1117/12.2524457
Show Author Affiliations
Hao Li, Nanjing Univ. of Science and Technology (China)
China Academy of Space Technology (China)
Jin Yu, Academy of Opto-Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Yong Liu, Nanjing Univ. of Science and Technology (China)
Jianguo He, Academy of Opto-Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Yanzhong Chen, Academy of Opto-Electronics (China)
Wenqi Ge, Academy of Opto-Electronics (China)
Zeqiang Mo, Academy of Opto-Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Hao Liu, Academy of Opto-Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Lianwen Fan, China Academy of Space Technology (China)
Jinduo Wang, Academy of Opto-Electronics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11046:
Fifth International Symposium on Laser Interaction with Matter
YiJun Zhao, Editor(s)

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