STUDY OF 3-D MIXING OF A COLD JET WITH A TRANSVERSE-PLASMA STREAM

The present study involves both experimental and mathematical modellin g of the 3-D mixing of a single jet with a transverse main stream. In the first part of this study, the interaction between a laminar nitrog en jet and a cross-flowing argon stream is studied under isothermal fl ow conditions. Results show that the numerical predictions of the nitr ogen concentration fields, downstream of the injection point, are in g ood agreement with the experimental measurements. In the second part o f this study, calculations of the mixing pattern between a single cold jet and a transverse plasma stream are presented. Results reveal a mu ch slower gas mixing process under plasma conditions due to the increa sing viscosity of the main stream. It is also shown that the mixing ch aracteristics depend strongly on the ratio of jet to main stream mass fluxes (R(m) = rho(i)v(i)/rho0w0).