Friction coefficient influence upon fluid jet atomization

Marius Beniuga; Ioan Mihai; Cornel Suciu; Silviu Sprinceană; Ioan C. Mihai

doi:10.1117/12.2070430

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20 February 2015 Friction coefficient influence upon fluid jet atomization

Marius Beniuga; Ioan Mihai; Cornel Suciu; Silviu Sprinceană; Ioan C. Mihai

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Proceedings Volume 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII; 925824 (2015) https://doi.org/10.1117/12.2070430
Event: Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies 2014, 2014, Constanta, Romania

Abstract

The work presented herein illustrates the differences between aerodynamic friction coefficients of liquid droplets of different shapes and dimensions that come into contact with air. Aerodynamic friction forces on a drop can be calculated if the aerodynamic coefficient of friction and cross-sectional area normal to the flow are known. The crosssectional area can be calculated on the basis of the maximum diameter of the droplet, dc, if it is assumed that the deformed droplets have the form of a flattened spheroid. According to Clift et al^[6], when a drop of liquid has weak internal tensions or high surface tension due to viscosity, external flow may differ from the surrounding liquid drop at the same Reynolds number. Internal tensions that exist in most systems of practical importance are negligible compared to surface tension. Given the fact that the ratio of the viscosity of the liquid and the gas jet spray is significant, we can assume that internal circulation is an important parameter.

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Marius Beniuga, Ioan Mihai, Cornel Suciu, Silviu Sprinceană, and Ioan C. Mihai "Friction coefficient influence upon fluid jet atomization", Proc. SPIE 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII, 925824 (20 February 2015); https://doi.org/10.1117/12.2070430

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