Numerical study on flow and heat transfer characteristics of two oil droplets impinging the wall simultaneously under the influence of micro-bubble

Awale, 2020, Multi-objective optimization of MQL mist parameters for eco-friendly grinding, Manuf. Process, 56, 75, 10.1016/j.jmapro.2020.04.069 Rahim, 2018, Evaluation of mist flow characteristic and performance in Minimum Quantity Lubrication (MQL) machining, Measurement, 123, 213, 10.1016/j.measurement.2018.03.015 Illoul, 2018, Modelling of part distortions due to thermo-mechanical effects with MQL machining applied to head-cylinder in a production line context, Procedia CIRP, 77, 433, 10.1016/j.procir.2018.08.288 Soriano, 2014, Study of the effects of single and multiple periodic droplet impingements on liquid film heat transfer, Int. J. Heat. Mass. Tran., 77, 449, 10.1016/j.ijheatmasstransfer.2014.04.075 Burzynski, 2018, Droplets splashing on thin moving films at high Weber numbers, Int. J. Multiphase Flow, 101, 202, 10.1016/j.ijmultiphaseflow.2018.01.015 Zhou, 2018, Numerical simulation of deformation and rupture process of bubble in an oil film impacted by an oil droplet, Acta Phys. Sin., 67, 144 Zhang, 2018, Investigation of oil droplet coverage rate and droplet size distribution under minimum quantity lubrication condition, Chin. J. Mech. Eng., 54, 169, 10.3901/JME.2018.03.169 Sharma, 2016, Effects of Minimum Quantity Lubrication (MQL) in machining processes using conventional and nanofluid based cutting fluids: a comprehensive review, J. Clean.Prod., 127, 1, 10.1016/j.jclepro.2016.03.146 Liang, 2019, Single-phase heat transfer of multi-droplet impact on liquid film, Int. J. Heat. Mass. Tran., 132, 288, 10.1016/j.ijheatmasstransfer.2018.11.145 Liang, 2019, Two-phase heat transfer of multi-droplet impact on liquid film, Int. J. Heat. Mass. Tran., 139, 832, 10.1016/j.ijheatmasstransfer.2019.05.055 Li, 2019, Spontaneous droplets gyrating via asymmetric self-splitting on heterogeneous surfaces, Nat. Commun., 10, 365 Rioboo, 2001, Outcomes from a drop impact on solid surfaces, Atomization Spray, 11, 155, 10.1615/AtomizSpr.v11.i2.40 Bi, 2012, Experimental study of spread characteristics of droplet impacting solid surface, Acta. Phys. Sin., 61, 293 Shen, 2009, Numerical simulation of droplet impacting on isothermal flat solid surface, J. Eng. Thermophys-CN., 30, 2116 Guo, 2010, Experimental research on the droplet impacting on the liquid film, Acta Phys. Sin., 59, 2601, 10.7498/aps.59.2601 Shetabivash, 2014, Numerical analysis of droplet impact onto liquid film, Phys. Fluids, 26, 10.1063/1.4861761 Yuan, 2019, Experimental investigation of liquid film cooling in hypersonic flow, Phys. Fluids, 31, 10.1063/1.5088024 Ersoy, 2020, Central uprising sheet in simultaneous and near-simultaneous impact of two high kinetic energy droplets onto dry surface and thin liquid film, Phys. Fluids, 32, 10.1063/1.5135029 Zhou, 2018, Characteristic oscillation phenomenon after head-on collision of two nanofluid droplets, Phys. Fluids, 30, 10.1063/1.5040027 Liang, 2013, Analysis of liquid sheet and jet flow mechanism after droplet impinging onto liquid film, Acta Phys. Sin., 62, 415 Zhou, 2018, Deformation and rupture of bubble when the hollow droplet impacts on the oil film, Acta Mech. Sinica., 50, 427 Fang, 2019, Temperature charateristics of droplet impacting on static hot pool, Acta Phys. Sin., 68, 214, 10.7498/aps.68.20190809 Liang, 2019, Successive impact of multiple droplets on liquid film, Eur. J. Mech. B-FLUID, 74, 389, 10.1016/j.euromechflu.2018.09.011 Liang, 2018, Simultaneous impact of multiple droplets on liquid film, J. Ind. Eng. Chem., 65, 51, 10.1016/j.jiec.2018.04.011 Barnes, 1999, An investigation of the interaction between two adjacent impinging droplets Batzdorf, 2017, Heat transfer during simultaneous impact of two drops onto a hot solid substrate, Int. J. Heat Mass Transfer, 113, 898, 10.1016/j.ijheatmasstransfer.2017.05.091 Zhang, 2017, Heat transfer characteristics of double, triple and hexagonally-arranged droplet train impingement arrays, Int. J. Heat Mass Transfer, 110, 562, 10.1016/j.ijheatmasstransfer.2017.03.009 Gao, 2018, Impact of a drop burst flow on a film flow cooling a hot surface, Int. J. Heat Mass Transfer, 126, 1193, 10.1016/j.ijheatmasstransfer.2018.06.042 Sussman, 2000, A coupled level set and volume-of-fluid method for computing 3D and axisymmetric incompressible two-phase flows, J. Comput. Phys., 162, 301, 10.1006/jcph.2000.6537 Song, 2011, Combined Level set-VOF method used in the computation of incompressible two-phase flows, J. Combust. Sci. Technol., 17, 443 Sun, 2010, A coupled volume-of-fluid and level set method for computing incompressible two-phase flows, Int. J. Heat. Mass. Tran., 53, 645, 10.1016/j.ijheatmasstransfer.2009.10.030 Menard, 2007, Coupling level set/VOF/ghost fluid methods: Validation and application to 3D simulation of the primary break-up of a liquid jet, Int. J. Multiphase Flow, 33, 510, 10.1016/j.ijmultiphaseflow.2006.11.001 Lee, 1979 Chen, 2020, Analysis of special phenomena of droplet impact on horizontal liquid film at low velocity, Ann. Nucl. Energy, 136, 10.1016/j.anucene.2019.107038 Ming, 2016, Sun Chunhua. Study on the growth and collapse of cavitation bubble within a droplet, Chine. J. Theor. Appl. Mech., 48, 857