RT Journal Article ID 47c414737cce0f27 A1 Eckel, Georg A1 Rachner, Michael A1 Le Clercq, Patrick A1 Aigner, Manfred T1 SEMI-EMPIRICAL MODEL FOR THE UNSTEADY SHEAR BREAKUP OF LIQUID JETS IN CROSS-FLOW JF Atomization and Sprays JO AAS YR 2016 FD 2016-03-08 VO 26 IS 7 SP 687 OP 712 K1 Lagrangian spray simulation K1 spray initial conditions K1 spray boundary conditions K1 primary atomization modeling K1 liquid jet in cross-flow K1 shear breakup regime AB The accuracy of spray simulations depends strongly on the initial and boundary conditions imposed on both the gaseous and the liquid phase. In many applications the droplet size distribution and droplet velocities close to the atomizer cannot be determined. In this study, a semi-empirical primary atomization model for Lagrangian particle tracking of the dispersed phase in Euler-Lagrange simulations is proposed. The examined atomization concept of a liquid jet in cross-flow subjected to a high velocity air stream is a configuration typical of industrial gas turbine applications. The model provides initial and boundary conditions not only via correlations for global parameters like characteristic diameters, it also delivers the sizes, starting positions and velocities of the droplets. This leads to an improved approximation of the droplet formation, droplet size distribution, and droplet propagation encountered in real sprays, which is here assessed by comparing simulation results with measurements. PB Begell House LK https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,669bb3010226db18,47c414737cce0f27.html