W. Masuda et al., Mixing and reacting zone structure in a supersonic mixing chemical oxygen-iodine laser with ramp nozzle array, JSME I J B, 42(3), 1999, pp. 362-368
Citations number
11
Categorie Soggetti
Mechanical Engineering
Journal title
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
The adoption of a ramp nozzle array in supersonic mixing chemical oxygen-io
dine lasers is examined by simulating the mixing and reacting flow fields n
umerically. Then, the efficiency of the ramps in improving the resulting ga
in region is studied. The compressible Navier-Stokes equations with a detai
led chemical kinetic model are solved using a full-implicit finite volume m
ethod. The numerical results show that streamwise vortices, which were not
anticipated in the previous studies, are induced downstream of the base rel
ief region of the ramp nozzle array and significantly accelerate the mixing
and reaction. The contact surface between the reactant streams is stretche
d very rapidly due to the vortices, resulting in much higher laser performa
nce.