AN INVESTIGATION ON A SUPERSONIC FLOW CO CHEMICAL LASER

超声流化学激光器的研究

• 批准号: 63550130
• 负责人: MASUDA Wataru
• 金额: $ 1.34万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63550130/
• 关键词: Supersonic Flow; Reactive Flow; Laser; Chemical Laser; Carbon Monoxide; レーザー; 化学レーザー

Small signal gain coefficients of a supersonic flow CO chemical laser were measured using a shock tunnel facility. The visual observation of the chemical luminescence from various reactions in the laser cavity were also performed and it was shown that the development of the mixing layer in the downstream direction is very gradual as was demonstrated by the numerical calculation using the thin shear layer approximation. The numerical calculation showed that the small signal gain coefficients begin to decrease at a location where the mixing layer is still a small portion of the total flow width. Therefore, much smaller nozzles than those of the present experiment are desirable in order to attain a higher average gain. The predicted distribution of the gains along the flow agreed fairly well with the experimental results. It was clearly demonstrated that the presence of the boundary layers and the magnitude of the wall catalysis play decisive roles in determining the laser performance.

利用激波风洞装置测量了超音速流动CO化学激光器的小信号增益系数。对激光腔内各种化学反应的化学发光也进行了目视观测，结果表明，混合层在下游方向的发展是非常缓慢的，这一点从薄剪切层近似的数值计算中得到了证明。数值计算表明，在混合层仍占总流宽较小的位置，小信号增益系数开始减小。因此，为了获得更高的平均增益，需要比本实验的喷嘴小得多的喷嘴。计算得到的增益沿流动方向的分布与实验结果吻合较好。结果表明，边界层的存在和壁面催化的大小对激光性能起着决定性的作用。

项目成果

W. Masuda and H. Hiraide: "Investigation on the Theoretical Modeling of a Supersonic Flow CO Chemical Laser" JSME Int. J.

W. Masuda 和 H. Hiraide：“超音速流 CO 化学激光器的理论模型研究” JSME Int。

増田渉、白石和彦、佐藤正史: "超音速流CO化学レ-ザの流れ場の観察と利得の測定" 日本機械学会論文集. 55. 3697-3702 (1989)

Wataru Masuda、Kazuhiko Shiraishi、Masashi Sato：“超音速 CO 化学激光器的流场观察和增益测量”日本机械工程师学会会刊 55. 3697-3702 (1989)。

W. Masuda and H. Hiraide: "Numerical Analysis on the Reaction Zone Structure of a Supersonic Flow CO Chemical Laser" JSME Int. J., Vol.32, No.4, pp.605-612, 1989.

W. Masuda 和 H. Hiraide：“超音速流 CO 化学激光器反应区结构的数值分析” JSME Int.

W.Masuda and H.Hiraide: "Investigation on the Theoretical Modeling of a Supersonic Flow CO Chemical Laser" JSME Int.J.

W.Masuda 和 H.Hiraide：“超音速流 CO 化学激光器的理论模型研究” JSME Int.J。

増田渉: Proc.7th Int.GCL Symp.

Wataru Masuda：Proc.7th Int.GCL Symp。