CFD Modelling of Free Surface and Entrainment of Buoyant Particles from Free Surface for Submerged Jet Systems

• Main Author: Hasan, Nurul
• Format: Citation Index Journal
• Published: 2001
• Subjects: TN Mining engineering. Metallurgy
• Online Access: http://eprints.utp.edu.my/5327/1/NH_phd_ASME_heat_t_division.pdf; http://eprints.utp.edu.my/5327/

For a submerged jet, there are many design characteristics to explore for better mixing of buoyant particles (BP). Industries are facing difficulties in mixing of BP. Higher turbulence favors mixing [1], but mixing of BP has always been an art. Submerged jet (SJ) or impinging jet (IJ) is one of the ways to disperse BPs. For a SJ, modeling of free surface is important when the jet is not deeply submerged (~ 10 mm) in the liquid bath. In this research project, the free surface (surface between air and liquid) for a SJ system in a cylindrical liquid bath and entrainment of BPs has been studied with CFD analysis. The solution parameters (velocity profile and center line velocity) are validated against experimental LDV data generated. The use of 2D axisymmetric geometries minimized the computational cost. To overcome the computational burden of tracking individual particles, the dispersion of particles/ turbulent fluctuations were determined by a Particle Cloud Model [2].