超音速化学氧碘激光器内流动与光能提取耦合仿真

摘要

针对超音速化学氧碘激光器,实现了包含化学反应的超音速流场和光场的耦合仿真.完善了流体力学计算与波动光学计算的耦合方法,解决了耦合计算中各物理参量有效传递及收敛判据选取等问题,根据具体的激光器参数,完成了耦合仿真.耦合计算体现了腔内光场与包含化学反应的超音速流场相互作用的机制,能够反映出有源腔中振荡光场的衍射和光能提取对流场所带来的影响,计算结果包含激光器流动过程、化学过程及光学过程的诸多工作参量.%Three-dimensional flow governing functions and the paraxial wave function are solved within whole laser cavity for the study of supersonic chemical oxygen-iodine lasers. A suitable computational method is developed to improve compatibility, effectiveness of data communication, and convergence performance for the coupling of computational fluid dynamics and computational optics. The coupled simulation can provide detailed information about the three-dimensional mixing flow in the cavity, the diffraction of resonant optical field, the influence of laser extraction upon flow fields, and the intensity and phase distribution of laser output.