Air Assisted Atomization Characterization of Biodegradable Fluid Using Microlubrication Technique

Article Preview

Abstract:

In microlubrication, effective spray cooling is generally dependent on the atomization process. Air assisted atomizer is commonly used in many industrial applications because even at low-pressure fuel or coolant supply, it can create a fine spray formation. Viscosity force resists the deformation of liquid ligaments into a droplet. This increase in viscosity creates a bigger droplet size. If the density of the coolant is more, it will resist the acceleration and results in a bigger droplet. Properties of coolant such as viscosity, density, and surface tension are important and will affect the droplet size. Hence, for effective microlubrication, the performance study of atomization is important. In this paper, computational fluid dynamics (CFD) is used to study atomization characteristics of biodegradable coolant castor oil and AccuLube-2000 at flow rate 150 ml/hr to 60 ml/hr. This paper focuses on the effect of coolant properties like viscosity and density on the droplet size and discrete phase model concentration. In this work, the CFD atomization is studied using a discrete phase model and a Realizable k-ϵ turbulent flow model. Numerical simulation shows that the droplet size of the castor oil is more than AccuLube-2000. Also, for a higher flow rate, the area near the nozzle had a very uneven concentration of sprayed particles. However, the concentration was more even as the spray went farther away from the nozzle.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volume 1019)

Pages:

211-217

Citation:

Online since:

January 2021

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2021 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Kamata, Y., Toshiyuki Obikawa, and J. Shinozuka. Analysis of mist flow in MQL cutting., Key Engineering Materials. Vol. 257. Trans Tech Publications Ltd, (2004).

DOI: 10.4028/www.scientific.net/kem.257-258.339

Google Scholar

[2] Arun S, R. P., Computational Evaluation of Spray Characteristics in Pressure Swirl Atomizers,, 5(7)(2015), p.804–809.

Google Scholar

[3] Ishak, Mohd Fazwan. Analysis of Diesel Spray Characteristic Using Single Hole SAC Nozzle and VCO Nozzle. Diss. UMP, (2012).

Google Scholar

[4] Najiha, M. S., et al. Minimum quantity lubricant flow analysis in end milling processes: A computational fluid dynamics approach., Journal of Mechanical Engineering and Sciences 3 (2012): 340-5.

DOI: 10.15282/jmes.3.2012.10.0032

Google Scholar

[5] Duchosal, A., et al. Numerical optimization of the minimum quantity lubrication parameters by inner canalizations and cutting conditions for milling finishing process with Taguchi method., Journal of Cleaner Production 108 (2015): 65-71.

DOI: 10.1016/j.jclepro.2015.07.126

Google Scholar

[6] Chen, Ming, et al. CFD analysis on the flow field of minimum quantity lubrication during external thread turning., Materials Science Forum. Vol. 723. Trans Tech Publications Ltd, (2012).

DOI: 10.4028/www.scientific.net/msf.723.113

Google Scholar

[7] Kalata, W., K. J. Brown, and R. J. Schick. Air Assisted Atomization in Spiral Type Nozzles., Proceedings of the 25th Annual Conference on Liquid Atomization and Spray Systems, ILASS Americas, Pittsburgh, PA, USA. (2013).

Google Scholar

[8] Rohit, J. N., et al. Computational fluid dynamics analysis of MQL spray parameters and its influence on MQL milling of SS304., Simulations for Design and Manufacturing. Springer, Singapore, 2018. 45-78.

DOI: 10.1007/978-981-10-8518-5_2

Google Scholar

[9] Arthur, H.L., Airblast Atomization. Prog. Energy Combust. Sci., Pergamon Press Ltd, 6, (1980) pp.233-259.

Google Scholar

[10] Sandeep Nagalikar, D. R. V. M. S. G. P. Numerical Analysis of Airblast Atomizer,, Vol. 3-I (Vol. 3-Issue 6 (June-2014)), p.1075–1079.

Google Scholar

[11] Balan, Arunachalam Senbagm Setra, et al. Computational fluid dynamics analysis of MQL spray parameters and its influence on superalloy grinding., Machining Science and Technology 21.4 (2017): 603-616.

DOI: 10.1080/10910344.2017.1365889

Google Scholar

[12] Xu, Rang Shu, et al. Numerical Simulation of Spray Process of Fuel Nozzle., Advanced Materials Research. Vol. 308. Trans Tech Publications Ltd, (2011).

Google Scholar

[13] Tan, Ee Sann, et al. Air assist atomization characterization of palm biodiesel through experimental investigation and CFD simulation., Biofuels 8.5 (2017): 571-577.

DOI: 10.1080/17597269.2016.1242685

Google Scholar

[14] Nagalikar, Sandeep, Mr Sanjeev G. Palekar, and R. Venkataram. Numerical Analysis of Airblast Atomizer., International Journal of Engineering Research 3.6 (2014).

Google Scholar

[15] Obikawa, Toshiyuki, and Yasuhiro Kamata. MQL cutting of Inconel 718 with a super lattice coating tool., Key Engineering Materials. Vol. 291. Trans Tech Publications Ltd, (2005).

DOI: 10.4028/www.scientific.net/kem.291-292.433

Google Scholar