Two-Fluid Large-Eddy Simulation of Two-Phase Flow in Air-Sparged Hydrocyclone

The two-fluid (Euler–Euler) model and large-eddy simulation are used to compute the turbulent two-phase flow of air water in a cyclonic flotation device known as an Air-Sparged Hydrocyclone (ASH). In operation ASH, is injected through porous cylindrical wall. study considers 48 mm diameter hydrocyclone uses block-structured fine mesh 10.5 million hexagonal elements. air-to-water injection ratio 4, uniform bubble 0.5 specified. field ASH was investigated for inlet rate 30.6 L/min at different values underflow exit pressure. current simulations quantify effects pressure on split overall physics including distribution volume fraction, axial velocity, tangential swirling-layer thickness. loci zero-axial velocity surfaces were determined pressures. overflow opening varies with 6%, 8%, 16%, 26% 3, 5, 6 kPa, respectively. These results indicate that regulating can be optimize ASH’s performance. Turbulent energy spectra regions analyzed. Small-scale turbulence near-wall points exhibit f−4 law, where f frequency. Whereas air-column interface, show inertial subrange f−5/3 followed by dissipative range f−7 law.