Advertisement

Computational Investigation of Various Transition Stages in the Drop Formation Process

  • Bishnoi PardeepEmail author
  • M. K. Sinha
Conference paper
  • 465 Downloads
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The aim of this paper to study the various transition stages of drop formation with the help of computational techniques. These regimes are being observed by varying capillary tube dimension and flow velocity. Two different drop formation mechanisms are famed: Either the drops are formed close to the capillary tip—dripping—or they break up from an extended liquid jet—jetting. Dripping faucet regime develops during the transition of the periodic regime to the jetting regime. We use glycerin as disperse phase liquid. We found that for low Weber number, the periodic dripping regimes are obtained whereas, for the high Weber number, jetting regimes are developed. We also study the variation in thread length and size of the breakoff drops and found that the variation of the thread length and the drop’s size in periodic dripping is nearly constant while these properties change in dripping faucet regime as well as in jetting regimes.

Keywords

Transition stages Drop formation Periodic dripping Dripping faucet Jetting regimes Volume of fluid 

References

  1. 1.
    Ziemecka I, Van Steijn V, Koper GJM, Kreutzer MT, Van Esch JH (2011) All-aqueous core-shell droplets produced in a microfluidic device. Soft Matter 7:9878–9880CrossRefGoogle Scholar
  2. 2.
    Geschiere SD, Ziemecka I, Van Steijn V, Koper GJM, Van Esch JH, Kreutzer MT (2012) Slow growth of the Rayleigh-Plateau instability in aqueous two-phase systems. Biomicrofluidics 6:022007CrossRefGoogle Scholar
  3. 3.
    Bishnoi P, Sinha MK (2018) A new approach to determine the diabetic level in patients. U.P.B. Sci Bull, Series D 80(1):71–84Google Scholar
  4. 4.
    Clanet C, Lasheras JC (1999) Transition from dripping to jetting. J Fluid Mech 383:307–326MathSciNetCrossRefGoogle Scholar
  5. 5.
    Notz PK, Chen AU, Basaran OA (2001) Satellite drops: unexpected dynamics and change of scaling during pinch-off. Phys Fluids 13(3):549–552CrossRefGoogle Scholar
  6. 6.
    Henderson D, Segur H, Smolka LB, Wadati M (2000) The motion of a falling liquid filament. Phys Fluids 12(3):550–565MathSciNetCrossRefGoogle Scholar
  7. 7.
    Rayleigh L (1899) Investigations in capillarity: the size of drops—the liberation of gas from supersaturated solutions—colliding jets—the tension of contaminated water-surfaces—a curious observation. Phil Mag 48:321–337CrossRefGoogle Scholar
  8. 8.
    Savart E (1833) Memoire sur la constitution des veines liquides lancees par des orifices circulaires en mince paroi. Ann Chim 53:337–386Google Scholar
  9. 9.
    Plateau J (1873) Statique Experimentale et Theorique des Liquides. Gauthier- Villars et CieGoogle Scholar
  10. 10.
    Zhang X (1999) Dynamics of growth and breakup of viscous pendant drops into air. J Colloid Interface Sci 212:107–122CrossRefGoogle Scholar
  11. 11.
    Srivastava M, Sinha MK (2018) Numerical simulation of dynamics of the drop formation at a vertical capillary tube. In: Singh MK et al. (eds) Applications of fluid dynamics, LNME, Springer, Singapore, pp 371–381.  https://doi.org/10.1007/978-981-10-5329-0_27Google Scholar
  12. 12.
    Wilkes ED, Phillips SD, Basaran OA (1999) Computational and experimental analysis of dynamics of drop formation. Phys Fluids 11(12):3577–3598CrossRefGoogle Scholar
  13. 13.
    Subramani JH, Yeoh HK, Xu Q, Ambravaneswaran B, Basaran OA (2006) Simplicity and complexity in a dripping faucet. Phys Fluids 18:1–13MathSciNetCrossRefGoogle Scholar
  14. 14.
    Mak SY, Chao Y, Shum HC (2017) The dripping-to-jetting transition in a co-axial flow of aqueous two-phase systems with low interfacial tension. RSC Adv 7:3287CrossRefGoogle Scholar
  15. 15.
    Nunes JK, Tsai SSH, Wan J, Stone HA (2013) Dripping and jetting in microfluidic multiphase flows applied to particle and fiber synthesis. J Phys D Appl Phys 46(11):114002CrossRefGoogle Scholar
  16. 16.
    Rayleigh L (1879) On the instability of jets. Proc London Math Soc 10:4–13MathSciNetzbMATHGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNIT JamshedpurJamshedpurIndia

Personalised recommendations