Abstract
Multiple jets injected radially into a reactive and a non-reactive cross-flow in a cylindrical chamber has been studied numerically using FLUENT CFD code. The chamber diameter was varied from 0.3 m to 3 m and the number of nozzles from 8 to 32. The maximum temperature difference over the chamber’s cross-sectional area was defined as the parameter to evaluate the mixing quality. The optimum mixing conditions for both reactive and nonreactive flows were obtained at a normalized momentum flux ratio (J/n2) of 0.3 with a penetration depth (h/R) of 0.6. This condition is valid for all number of nozzles. However, increasing the number of nozzles will also improve the mixing quality. It has been observed that for higher number of nozzles, the optimum mixing quality is nearly independent of J/n2 in the range greater than 0.3. This is important for the processes with ever-changing conditions which is typical in chemical processing industry.
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