Mixing and Reacting Zone Structure in a Supersonic Mixing Chemical Oxygen-Iodine Laser with Ramp Nozzle Array
Mixing and Reacting Zone Structure in a Supersonic Mixing Chemical Oxygen-Iodine Laser with Ramp Nozzle Array
复制标题
具有斜坡喷嘴阵列的超音速混合化学氧碘激光器中的混合和反应区结构
DOI：
10.1299/jsmeb.42.362
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Abe
中科院分区：
文献类型：
--
作者：
W. Masuda;M. Hishida;Y. Abe
通过对混合和反应流场进行数值模拟，检验了超音速混合化学氧碘激光器中斜坡喷嘴阵列的采用。然后，研究了斜坡在改善所得增益区方面的效率。使用全隐式有限体积法求解具有详细化学动力学模型的可压缩纳维-斯托克斯方程。数值结果表明，在之前的研究中没有预料到的流向涡流是在斜坡喷嘴阵列的底部释放区域的下游引起的，并且显着加速了混合和反应。由于涡流，反应物流之间的接触表面被非常迅速地拉伸，从而产生更高的激光性能。
The adoption of a ramp nozzle array in supersonic mixing chemical oxygen-iodine lasers is examined by simulating the mixing and reacting flow fields numerically. Then, the efficiency of the ramps in improving the resulting gain region is studied. The compressible Navier-Stokes equations with a detailed chemical kinetic model are solved using a full-implicit finite volume method. The numerical results show that streamwise vortices, which were not anticipated in the previous studies, are induced downstream of the base relief region of the ramp nozzle array and significantly accelerate the mixing and reaction. The contact surface between the reactant streams is stretched very rapidly due to the vortices, resulting in much higher laser performance.