Two-dimensional Theoretical Model for the Supersonic Diffusional CW HF Chemical Lasers

Two-dimensional theorctical model for predicting CW HF laser performance is used in this paper. The parallel mixing at constant lateral pressure between a pair of primary and secondary stream as well as the transitions proceeded from （v+1, J-1） to （v、J） are assumed. A set of parabolic partial differential equations are solved using the finite-difference technique. The results provide the detailed axial and lateral distributions of gas velocity, temperature and mole fractions of all species. The effects of the initial flow condition and nozzle size on the performance such as output power, specific power and chemical efficiency of the CW HF chemical laser are also calculated.