| 内通道气帘的设计与分析 |
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| 引用本文： | 孙运强,习锋杰,陈洪斌,刘顺发,王继红,许晓军,陆启生.内通道气帘的设计与分析[J].激光与光电子学进展,2011(5). |
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| 作者姓名： | 孙运强 习锋杰 陈洪斌 刘顺发 王继红 许晓军 陆启生 |
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| 作者单位： | 中国科学院光电技术研究所光束控制国家重点实验室;国防科学技术大学光电科学与工程学院;中国科学院研究生院; |
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| 基金项目： | 中国科学院重点实验室预研基金(A09k002)资助课题 |
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| 摘 要： | 保持光传输通道内单一均匀的低吸收系数气体,对削弱内通道中的气体热效应有重要意义。采用气帘作为封装设备,对气帘的结构进行了设计。取气帘入口气体为氮气,出口气体为空气,借助现有计算流体力学软件FLUENT提供的组分输运模型,对气帘进行了数值模拟。结果表明,气帘入口段形成的平面射流可以阻挡外界空气的回流;在氮气与氧气相混合的区域内,尽管气体密度存在一定起伏,但气体密度变化的梯度方向与光传输方向基本是平行的,这种密度起伏只会对光场相位的活塞项产生影响,不会影响激光的远距离传输。最后,对气帘的性能进行了实验测试,实验结果表明,设计的气帘能够对管道内的气体进行密封,并避免了较大光程差的引入。
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| 关 键 词： | 激光光学 气帘 气体热效应 内通道 数值仿真 |
Design and Analysis on Gas Curtain of Beam Path Indoor |
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| Sun Yunqiang, Xi Fengjie, Chen Hongbin Liu ShunfaWang Jihong Xu Xiaojun Lu Qisheng.Design and Analysis on Gas Curtain of Beam Path Indoor[J].Laser & Optoelectronics Progress,2011(5). |
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| Authors: | Sun Yunqiang Xi Fengjie Chen Hongbin Liu ShunfaWang Jihong Xu Xiaojun Lu Qisheng |
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| Affiliation: | Sun Yunqiang1,2,3 Xi Fengjie1,3 Chen Hongbin1 Liu Shunfa1Wang Jihong1 Xu Xiaojun2 Lu Qisheng2(1State Key Laboratory of Beam Control,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China2College of Opto-Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China3Graduate University of Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | It is greatly significant to weaken the thermal blooming of beam path indoor by keeping the tube filled with single specific gas of uniform density and low absorption.The gas curtain is applied as sealing device,and the structure of gas curtain is elaborately designed.The fluid characteristic of gas curtain with nitrogen-filled inlet and air-filled outlet is modeled and simulated by the species transport model which is provided by the computational fluid dynamic software FLUENT.The simulated results indicat... |
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| Keywords: | laser optics gas curtain thermal blooming beam path indoor numerical simulation |
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