斜抽运无机液体激光器的流场热分布

胡滔; 魏泳涛; 宋影松; 张玉明; 李密; 马再如; 冯国英

doi:10.7498/aps.59.7027

摘要

激光二极管斜抽运的多增益段串接的液体激光器能够明显地提高激光光束质量、获得较高的输出功率.针对斜抽运子增益段工作时所涉及的流动、传热和壁面耦合,建立了计算子增益段流场热分布的流-热-固耦合模型,应用有限单元法完成了其瞬态流场热分布的数值模拟.该方法排除了不精确的换热系数对计算结果的影响,使得换热系数不再是计算的先决条件,而只是计算结果之一,并且为评价流道形状、流速、吸收系数等因素对流场热的影响,以及进一步改进和控制液体激光介质的流场热分布,提供了可靠的分析方法.数值模拟研究表明:换热系数是空间位置的函数,

关键词:

Abstract

The multi-segment liquid laser system connected in series and obliquely pumped by LD can have significantly improved laser beam quality and higher output power. A flow-heat-solid interaction model for calculating the temperature distribution in the sub-gain section is established, which is focused on the flow, heat transfer and coupling in sub-gain section. We performed the numerical simulation of transient flow-field-heat distribution by way of the finite element method. The method proposed precludes the influence of the inaccurate film coefficient on the calculation results, the film coefficient is no longer a prerequisite, but a result of the calculation. Our method provides a new effective way to assess and control the flow-field-heat distribution which is affected by the flow channel shape, flow rate, absorption coefficient and other factors. Numerical results show that the film coefficient is a function of spatial location. Flow and heat transfer effieciency decreases with increasing velocity. When the laser medium is flowing, the temperature distribution and temperature gradient distribution are similar and are complementary to the film coefficient distribution, the maximum temperature and temperature gradient appears in the sharp corner downstream the flow.

Keywords:

作者及机构信息

(1)四川大学电子信息学院,成都 610064; (2)四川大学电子信息学院,成都 610064,西华大学物理与化学学院,成都 610039; (3)四川大学建筑与环境学院,成都 610064; (4)中国工程物理研究院应用电子学研究所,绵阳 621900

基金项目: 国家自然科学基金重大项目(批准号:60890203)、国家自然科学基金(批准号:10976017)和国家自然科学基金委员会与中国工程物理研究院联合基金(批准号:10676023)资助的课题.

Authors and contacts

(1)College of Architecture and Environmental, Sichuan University, Chengdu 610065, China; (2)College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China; (3)College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China, Institute of Applied Physics, Xihua University, Chengdu 610039, China; (4)Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China

参考文献

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[6]	Li Z G, Huai X L, Wang L 2009 Appl. Therm. Eng. 29 2927
[7]	Ma Z, Li D J, Cao J C, Wu N L, Du K M 2007 Opt. Commun. 275 179
[8]	Sovizi M, Massudi R 2007 Opt. Commun. 275 206
[9]	Silvestre , Grau J, Pujol M C 2008 Opt. Express. 16 5022
[10]	Lin B, Morgan M N, Chen X W, Wang Y K 2009 Int. J. Adv. Manuf. Technol. 42 1175
[11]	Zu N N, Dai Z W, Cui Z Q, Tang Y 2008 J. Opt. Am. B 25 2092
[12]	Yang Y M, Xu Q M, Guo Z 2008 Acta Phys. Sin. 57 223( in Chinese) [杨永明、许启明、过振 2008 57 223]
[13]	Dalkilic A S, Yildiz S, Wongwises S 2009 Int. J. Heat Mass Tran. 52 142
[14]	Li Z, Huai X, Tao Y 2007 Appl. Phys.B 87 301
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[17]	Li M 2007 M. S. Thesis ( Mianyang: China Academy of Engineering Physics) (in Chinese)[李密 2007 硕士学位论文(绵阳: 中国工程物理研究院)]
[18]	Wang Y F, Liu L C 2006 Quart Glass (Beijing: Chemical Industry Press) pp3—p11(in Chinese ) [王玉芬、刘连成 2006 石英玻璃(北京:化学工业出版社)第3—11页]
[19]	Wang J R, Min J C, Song Y Z 2006 Appl. Therm. Engng. 26 549
[20]	Wu J, Summers H D 2009 Chin. Phys. B 18 4912
[21]	Li Z G, Huai X L, Tao Y J, Guo Z Y 2009 Appl. Opt. 48 598

施引文献

[1]	Comaskey B J, Ault E R, Kuklo T C 2005 U. S. Patent 6 914 926 B2
[2]	Ren G G 2006 Laser Technol. 30 418( in Chinese)[任国光 2006 激光技术 30 418]
[3]	Li M, Su Y, Song Y S, Xu Z 2008 Acta Opt. Sin. 28 2349 (in Chinese) [李密、苏毅、宋影松、许正 2008 光学学报 28 2349]
[4]	Watson W, Reich S, Lempicki A 1968 IEEE J. Quantum Electron. 4 842
[5]	Song X L, Guo Z, Li B B, Wang S Y, Cai D F, Wen J G 2009 Acta Phys. Sin. 58 1700 (in Chinese) [宋小鹿、过振、李兵斌、王石语、蔡德芳、文建国 2009 58 1700]
[6]	Li Z G, Huai X L, Wang L 2009 Appl. Therm. Eng. 29 2927
[7]	Ma Z, Li D J, Cao J C, Wu N L, Du K M 2007 Opt. Commun. 275 179
[8]	Sovizi M, Massudi R 2007 Opt. Commun. 275 206
[9]	Silvestre , Grau J, Pujol M C 2008 Opt. Express. 16 5022
[10]	Lin B, Morgan M N, Chen X W, Wang Y K 2009 Int. J. Adv. Manuf. Technol. 42 1175
[11]	Zu N N, Dai Z W, Cui Z Q, Tang Y 2008 J. Opt. Am. B 25 2092
[12]	Yang Y M, Xu Q M, Guo Z 2008 Acta Phys. Sin. 57 223( in Chinese) [杨永明、许启明、过振 2008 57 223]
[13]	Dalkilic A S, Yildiz S, Wongwises S 2009 Int. J. Heat Mass Tran. 52 142
[14]	Li Z, Huai X, Tao Y 2007 Appl. Phys.B 87 301
[15]	Zhu H T, Lou Q H, Zhou J, Qi Y F, Dong J X, Wei Y R 2008 Acta Phys. Sin. 57 4966( in Chinese) [朱洪涛、楼祺洪、周军、漆云凤、董景星、魏运荣 2008 57 4966]
[16]	Xie H Q, Chen L F 2009 Acta Phys. Sin. 58 2513( in Chinese) [谢华清、陈立飞 2009 58 2513]
[17]	Li M 2007 M. S. Thesis ( Mianyang: China Academy of Engineering Physics) (in Chinese)[李密 2007 硕士学位论文(绵阳: 中国工程物理研究院)]
[18]	Wang Y F, Liu L C 2006 Quart Glass (Beijing: Chemical Industry Press) pp3—p11(in Chinese ) [王玉芬、刘连成 2006 石英玻璃(北京:化学工业出版社)第3—11页]
[19]	Wang J R, Min J C, Song Y Z 2006 Appl. Therm. Engng. 26 549
[20]	Wu J, Summers H D 2009 Chin. Phys. B 18 4912
[21]	Li Z G, Huai X L, Tao Y J, Guo Z Y 2009 Appl. Opt. 48 598

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