Flow field and mixing characteristics of coolant radial jets injected radially from multiple nozzles rows of
centreline distributer into a heated non-reacting crossflow in a cylindrical chamber is numerically
investigated. The study simulates the process of air jets injection in the combustion chambers of gas
turbines through discrete holes. Three-dimensional model using ANSYS-FLUENT 14.5 CFD package is
used. The effects of jet-mixing ratio, nozzles diameter, distributer diameter, number of nozzles rows,
number of nozzles per row on the penetration depth and mixing quality through chamber cross section
are parametrically studied. The results are validated with the available experimental data and good
agreement are obtained. The results showed that nozzle diameter, distributer diameter and jet-mixing
ratio have effects on the penetration depth and the mixing quality compared to the effects of the
number of nozzles per row and the number of nozzles rows. The effects are remarkable at high mixing
ratio. The integral mixing quality along the chamber cross section increased with increasing mixing ratio,
nozzles diameters, number of nozzles per row and number of nozzles rows. Dimensionless correlations
for predicting the penetration depth and mixing quality in terms of the controlling parameters are
developed.