Abstract
High-viscosity organic oils may be considered as an alternative to the ordinary diesel fuel. These organic oils and the diesel fuel are all Newtonian liquids; however, viscosity values of the organic oils are more than 20 times higher than that of the diesel fuel. In the present work, the electrostatic atomization of corn oil jets is studied and compared to the electrostatic atomization of diesel fuel jets. The experimental data revealed that in addition to the varicose breakup of straight jets, bending modes set in and grow in conjunction with the varicose undulations. Bending instability, kindred to the aerodynamically-driven bending instability of high-speed liquid jets moving in air, and to the electrically-driven bending instability of polymer jets in electrospinning, is significantly more pronounced in the case of the highly-viscous corn oil jets than in diesel jets. The experimental results are interpreted using the theory of bending instability developed previously for electrospinning.
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