The Effect of Weber Number on Spray and Vaporization Characteristics of Liquid Jets Injected in Air Crossflow

Abstract This paper details a numerical investigation conducted to systematically evaluate the effects of aerodynamic Weber number, in range from 68 136, on spray characteristics and gaseous fluid dynamics when liquid jets are injected high-temperature air crossflow. The momentum flux ratio temperature for all cases studied this research effort 9 573 K, respectively. computations using an Eulerian–Lagrangian framework, where gas phase is modeled by compressible form Navier–Stokes equations treated Lagrangian frame with appropriate models account jet injection breakup phenomena. A modified version two-way coupling, which takes into finite size dispersed phase, used exchange mass, momentum, energy species between two phases. Turbulence closure achieved large eddy simulation technique. As first step, framework validated against measurements non-vaporizing vaporizing conditions—our results agree well experimental data. Next, three numbers mentioned above conducted—the effect number quantified terms spatiotemporal evolution mass fraction vaporized liquid, detailed distributions droplet sizes, their velocities, volumetric fluxes. It found that increase sizes penetration depth monotonically decreased. result, at higher conditions, domain increases due overall enhancement effective surface area phase.