Variation of population inversion and gain characteristics with D2 injection angle in DF chemical laser cavity

Since the two-stream injection angle was considered to influence the performance of supersonic combustor, the effects of D2 injection angles against the main F flow on mixing enhancement, population inversion and gain characteristics were numerically investigated in this study. The results were discussed by comparison with three cases of D2 injection angles such as 10°, 20° and 40° against the main flow direction. As the injection angle increases, two counter-balancing effects were observed.