湍流流场中激光传输的积分法研究

许凌飞; 周志超; 任天荣

doi:10.21656/1000-0887.370065

湍流流场中激光传输的积分法研究

doi: 10.21656/1000-0887.370065

上海机电工程研究所, 上海 201109

基金项目: 上海市科技委“扬帆计划”基金（15YF1405600）；上海市自然科学基金（16ZR1415900）

详细信息

作者简介:
许凌飞（1984—），男，高级工程师，博士（E-mail: jsj900@hotmail.com）；周志超（1964—），男，高级工程师，博士（E-mail: send2zhou@sina.com）；任天荣(1964—），男，高级工程师，博士(通讯作者. E-mail: 09110290007@fudan.edu.cn）.

中图分类号: O43;O357
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出版历程
- 收稿日期: 2016-03-07
- 修回日期: 2016-09-08
- 刊出日期: 2016-10-15

Research on the Integration Method for Laser Beam Progagation in Turbulent Flows

Shanghai Institute of Mechanical and Electrical Engineering, Shanghai 201109, P.R.China

摘要

摘要: 采用Born近似的Maxwell(麦克斯韦)方程组的积分解形式较少用于气动光学数值计算，其困难在于对该方程组的离散化数值计算.结合广义卷积-快速Fourier变换（GCV-FFT）方法，对在自由空间传播的Rayleigh-Sommerfeld衍射方程进行数值计算，可以达到比较高的精度.通过对Green函数及采样系数的修正，可以得到对气动光学现象进行数值仿真的积分解算方法；而用修正GCV-FFT结合数值积分的方法，对超声速湍流边界层中传输的激光光束进行数值计算，可以很好地对一些气动光学现象，如光束偏移、破碎等，进行数值模拟.由于这种积分方法不依赖傍轴近似条件，故给出的计算结果能够更接近问题的物理本质.
- 积分法 /
- 激光传输 /
- 湍流 /
- Born近似 /
- 散射势 /
- 傍轴近似
Abstract: The integration method for the solution of the Maxwell equations with the Born approximation was less utilized in the aero-optic numerical simulation because of its difficulty in the discrete calculation. Combined with the generalized convolution-FFT (GCV-FFT) algorithm, the more accurate results were obtained from the numerical computation of the Rayleigh-Sommerfeld diffraction in the free space. With some modifications to the Green function and the sampling coefficients, the integration method can be used in the numerical simulation of aero-optics. The laser beam propagation through a supersonic boundary layer shows that the effects of aero-optics (beam break, beam shift, etc.) can be well simulated with the integration method combined with the generalized GCV-FFT algorithm. The numerical simulation results gotten with the proposed integration method would be closer to the problems’ physical essence due to its independence from the paraxial approximation.
- integration method /
- laser beam propagation /
- turbulent flow /
- Born approximation /
- scattering potential /
- paraxial approximation

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参考文献(21)

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湍流流场中激光传输的积分法研究

doi: 10.21656/1000-0887.370065

作者简介:
许凌飞（1984—），男，高级工程师，博士（E-mail: jsj900@hotmail.com）；周志超（1964—），男，高级工程师，博士（E-mail: send2zhou@sina.com）；任天荣(1964—），男，高级工程师，博士(通讯作者. E-mail: 09110290007@fudan.edu.cn）.

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Research on the Integration Method for Laser Beam Progagation in Turbulent Flows

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目录

留言板

湍流流场中激光传输的积分法研究

doi: 10.21656/1000-0887.370065

作者简介: 许凌飞（1984—），男，高级工程师，博士（E-mail: jsj900@hotmail.com）；周志超（1964—），男，高级工程师，博士（E-mail: send2zhou@sina.com）；任天荣(1964—），男，高级工程师，博士(通讯作者. E-mail: 09110290007@fudan.edu.cn）.

计量

出版历程

Research on the Integration Method for Laser Beam Progagation in Turbulent Flows

计量

出版历程

目录

作者简介:
许凌飞（1984—），男，高级工程师，博士（E-mail: jsj900@hotmail.com）；周志超（1964—），男，高级工程师，博士（E-mail: send2zhou@sina.com）；任天荣(1964—），男，高级工程师，博士(通讯作者. E-mail: 09110290007@fudan.edu.cn）.