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New approach of gas-liquid computational fluid dynamics simulations for the study of minimum quantity cooling with airblast plain-jet injectors

par Diakodimitris, Christophe ;Iskandar, Youssef Y.R.;Hendrick, Patrick ;Slangen, Pierre
Référence Journal of manufacturing science and engineering, 135, 4, 041009
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

Due to the complexity of multiphase flows, they are often studied with numerical simulations. These simulations must be validated with experimental results. This paper introduces a new approach to initialize the continuous phase of gas-liquid flows generated by airblast nozzles for microlubrication applications with a recently modified commercial computational fluid dynamics (CFD) code FINE™/Open. Microlubrication is a technology used in metal machining where the coolant flow rate is lower than with conventional flood cooling. In this paper, single-phase gas and two-phase liquid-gas flows are studied. The continuous phase is simulated using Reynolds-averaged Navier-Stokes (RANS) equations coupled with a k-ε turbulence model and the dispersed phase is simulated using a Lagrangian method. To validate these simulations, particle image velocimetry (PIV) and particle dynamics analysis (PDA) measurements have been performed. This study illustrates the possibility of performing complex two-phase simulations with the help of single-phase studies to initialize the continuous phase of the flow (i.e., the gas). The single-phase flow also helps in estimating the magnitudes of the droplet velocities. Copyright © 2013 by ASME.