Isothermal swirling flow characteristics and pressure drop analysis of a novel double swirl burner

Nonreacting swirling flow behavior through a novel double swirl burner has been investigated in this paper using Detached Eddy Simulation (DES) calculations and experimental measurements. The effect of mixing both the inner jet (primary air or swirler) annular (secondary outer on structure analyzed. Moreover, pressure losses field characteristics have at different inlet mass rates combustor diameters. Due to drawbacks general loss predict drop high turbulence as well complex geometry, time-averaged viscous dissipation function is used burner. This based relationship between losses. DES fields are compared with high-speed particle image velocimetry measurements rates. It found that there good agreement numerical results, central toroidal recirculation zone corner captured. In case single swirler, very generators, 84% pass swirler just 16% (partially premixed). important identify locations lead inside burner, which induces select appropriate design for best performance. addition, it concluded performance more efficient other two swirlers terms structure.