Experimental Study on Breakup and Transition of a Rotating Liquid Jet

Document Type : Regular Article

Authors

1 Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, Taiwan

2 Department of Mechanical Engineering, National Cheng Kung University, Tainan 70101, Taiwan

3 Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors, National Taipei University of Technology, Taipei 10608, Taiwan

4 Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan

5 Department of Mechanical Engineering, Chung Yuan Christian University, Taoyuan 32023, Taiwan

10.47176/jafm.15.03.33149

Abstract

The present study pertains to the experimental work on the characteristic of a rotating liquid jet under various conditions of the nozzle diameter, volumetric flow rate and rotating speed. With emphasis on the important phenomena of a liquid jet, the effects of breakup length, the transition between dripping and jetting, breakup categories, droplet sizes from the breakup, and the time interval between two successive droplets are investigated systematically. The results reveal that the breakup length of a jet increases with flow rate and decreases with imposed rotation. The hysteresis behavior only occurs for larger nozzles, and the transition from jetting to dripping is affected by the imposed rotation. Depending on the imposed rotation, three different breakup patterns are found and named single droplet, satellite droplet, and multi-position necking. An empirical correlation is also proposed to predict the boundary of satellite and multi-droplets formation. The main droplet, satellite droplet, and merged droplet are about 1.8, 0.8, and 2.2 times than the nozzle diameters, respectively, no matter what the rotating speed is. Moreover, the non-dimensional time interval between two main droplets has an ascending tendency with either We number or the imposed rotation.

Keywords


Amini, G., M. Ihme and A. Dolatabadi (2013). Effect of gravity on capillary instability of liquid jets. Physical Review E 87(5), 053017.##
Ashgriz, N. and F. Mashayek (1995). Temporal analysis of capillary jet breakup. Journal of Fluid Mechanics 291, 163-190.##
Birouk, M. and N. Lekic (2009). Liquid jet breakup in quiescent atmosphere: A review. Atomization Sprays 19(6), 501-528.##
Bogy, D. (1979). Drop formation in a circular liquid jet. Annual Review of Fluid Mechanics 11(1), 207-228.##
Bonhoeffer, B., A. Kwade and M. Juhnke (2017). Impact of formulation properties and process parameters on the dispensing and depositioning of drug nanosuspensions using micro-valve technology. Journal of Pharmaceutical Sciences 106(4), 1102-1110.##
Brandau, T. (2002). Preparation of monodisperse controlled release microcapsules. International Journal of Pharmaceutics 242(1-2), 179-184.##
Chandrasekhar, S. (1961). Hydrodynamics and Hydromagnetic Stability. Oxford: Oxford University Press.##
Chemloul, N. S. (2012). Experimental study of cavitation and hydraulic flip effects on liquid jet characteristics into crossflows. Journal of Applied Fluid Mechanics 5, 33-43.##
Chung, J. M., J. Yoon and Y. Yoon (2015). Effect of recess length on instability in a gas-centered liquid annular jet. Atomization Sprays 25(1).##
Clanet, C. and J. C. Lasheras (1999). Transition from dripping to jetting. Journal of Fluid Mechanics 383, 307-326.##
Eggers, J. and M. P. Brenner (2000). Spinning jets. Paper presented at the IUTAM Symposium on Nonlinear Waves in Multi-Phase Flow.##
Gao, D. and J. G. Zhou (2019). Designs and applications of electrohydrodynamic 3D printing. International Journal of Bioprinting 5(1), 172.##
Ghate, K., S. Sharma and T. Sundararajan (2019). Spray atomization characteristics of a low pressure rotary injector. Atomization Sprays 29(6).##
Gillis, J. (1961). Stability of a column of rotating viscous liquid. Paper presented at the Mathematical Proceedings of the Cambridge Philosophical Society.##
Grant, R. P. and S. Middleman (1966). Newtonian jet stability. AIChE Journal 12(4), 669-678.##
Hocking, L. and D. Michael (1959). The stability of a column of rotating liquid. Mathematika 6(1), 25-32.##
Krištof, O., P. Bulejko and T. SvÄ›rák (2019). Experimental Study on Spray Breakup in Turbulent Atomization Using a Spiral Nozzle. Processes 7(12), 911.##
Kubitschek, J. and P. Weidman (2007a). The effect of viscosity on the stability of a uniformly rotating liquid column in zero gravity. Journal of Fluid Mechanics 572, 261-286.##
Kubitschek, J. and P. Weidman (2007b). Helical instability of a rotating viscous liquid jet. Physics of Fluids 19(11), 114108.##
Labergue, A., M. Gradeck and F. Lemoine (2015). Comparative study of the cooling of a hot temperature surface using sprays and liquid jets. International Journal of Heat Mass Transfer 81, 889-900.##
Li, Y., G. M. Sisoev and Y. D. Shikhmurzaev (2019). On the breakup of spiralling liquid jets. Journal of Fluid Mechanics 862, 364-384.##
Lu, Q., R. Muthukumar, H. Ge and S. Parameswaran (2020). Numerical study of a rotating liquid jet impingement cooling system. International Journal of Heat Mass Transfer 163, 120446.##
McCarthy, M. and N. Molloy (1974). Review of stability of liquid jets and the influence of nozzle design. The Chemical Engineering Journal 7(1), 1-20.##
Morad, M. R., M. Nasiri and G. Amini (2020). Axis-switching and breakup of rectangular liquid jets. International Journal of Multiphase Flow 126, 103242.##
Rayleigh, L. (1879). On the capillary phenomena of jets. Proceedings of the Royal Society of London 29(196-199), 71-97.##
Rutland, D. and G. Jameson (1970). Droplet production by the disintegration of rotating liquid jets. Chemical Engineering Science 25(8), 1301-1317.##
Savart, F. (1883). Memoire sur la constitution des veines liquides lancees par des orifices circulaires en mince paroi. Annual Review of Physical Chemistry 337(53), 337-386.##
Son, P. and K. Ohba (1998). Theoretical and experimental investigations on instability of an electrically charged liquid jet. International Journal of Multiphase Flow 24(4), 605-615.##
Tang, Z., F. Deng, S. Wang and J. Cheng (2021). Numerical Simulation of Flow and Heat Transfer Characteristics of a Liquid Jet Impinging on a Cylindrical Cavity Heat Sink. Journal of Applied Fluid Mechanics 14(3), 723-732.##
Utreja, L. and D. Harmon (1990). Aerodynamic breakup of liquid jets-A review. Paper presented at the 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference.##
Wang, F. and T. Fang (2015). Liquid jet breakup for non-circular orifices under low pressures. International Journal of Multiphase Flow 72, 248-262.##
Wang, Y. b., J. P. Guo, F. Q. Bai and Q. Du (2018). Influences of bounded and compressible gas medium on the instability of an annular power-law liquid jet. Atomization Sprays 28(5).##
Weidman, P., J. Kubitschek and A. Medina (2008). Profiles of flow discharged from vertical rotating pipes: A contrast between inviscid liquid and granular jets. Physics of Fluids 20(11), 117101.##
Yang, L. J., T. Hu, P. M. Chen and H. Y. Ye (2017). Nonlinear spatial instability of a slender viscous jet. Atomization Sprays 27(12).##
Zahniser, R. (2004). Instabilities of rotating jets. (B.S. thesis), Massachusetts Institute of Technology, Boston.##
Volume 15, Issue 3 - Serial Number 64
May and June 2022
Pages 757-765
  • Received: 03 July 2021
  • Revised: 17 December 2021
  • Accepted: 20 December 2021
  • First Publish Date: 14 March 2022