Experimental study of reacting gas jets in liquids: heat release effects

Experimental and computational fluid dynamic study of reacting gas jet in liquid: Flow pattern and heat transfer

“…The predictions of plume length and void fraction were found to be in a reasonably good agreement with the experimental data of Cho et al (1990) GENEMIX (93 Â 1000 They reported that the predictions of plume length from simulations show good agreement with the wide range of experimental conditions with varying ammonia concentration, bath temperature and bath pressure Plume length increases with increase in ammonia concentration Either raising the bath temperature or lowering the bath pressure, results into an increase in the plume length Chan and Chern (1990) Cl 2 -molten Na LHF+k-e-g model +cliped Gaussian PDF…”

“…A dynamic balance gets maintained between the simultaneous vaporization and the condensation. This has also been observed previously (Cho et al, 1990;Chan, 1993). The total penetration length of plume was found, experimentally, to be oscillating in nature (Fig.…”

“…The lithium subcooling effect on the flow structure was examined Chan and Shen (1990) HCl-aqueous NH 3 . The data of Cho et al (1990) were simulated DH=3420 (kJ/kg of HCl), C p = 4.76 (kJ/kg K), density (kg/m 3 ), HCl = 2.3 aq., NH 3 =690 ID = 0.1 m, Height = 0.45 m, nozzle ID = 1 Â 10 À 3 m, nozzle submergence = 0.05 m, orientation = vertical upward LHF+ k-e-g model +cliped Gaussian PDF…”

“…The subgrid-scale stresses resulting from the filtering operation are unknown and require modeling. In this study, a dynamic subgrid-scale eddy viscosity model by Germano et al (1991) based on the standard Smagorinsky (1963) Cho et al (1990) were simulated The relative predictions of the present model and the rational correlations have been presented for the estimation of plume length for both the types of jet systems model has been adopted for modeling the subgrid turbulent viscosity. After filtering of the governing equations, the subgridscale stress term has the following form: …”

“…They investigated the effects of jet angle and the reactor orientation. Cho et al (1990) have carried out experimental study of hydrogen chloride jet in an aqueous solution of ammonia over a wide range of bath concentrations, temperatures and pressures. Plume behavior was investigated using photography and pressure sensor.…”