THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Study of the phenomenon of the interaction between sessile drops during evaporation

ABSTRACT
This research work represents an experimental study of the interaction between water drops deposited on a substrate at ambient temperature. To examine this phenomenon, the evaporation of a single drop deposited on a substrate was first investigated. Then, several drops were deposited alongside on the same substrate under the same conditions. The central drop dynamic behavior was also examined and compared with that of a single drop. This comparison shows the effect of the interaction between the neighboring drops, which delayed the evaporation of these drops and particularly the central droplet, on evaporation. In fact, three configurations were studied by changing the initial distance (d) between the drops (d = 0.2 mm, d = 7 mm and d = 15 mm). The obtained results reveal that the interaction phenomenon becomes less important by increasing the distance between the drops. This is important for optimizing many industrial applications, such as spray drying, fuel injection in combustion engines, and other applications.
KEYWORDS
PAPER SUBMITTED: 2018-04-06
PAPER REVISED: 2018-06-07
PAPER ACCEPTED: 2018-06-09
PUBLISHED ONLINE: 2018-09-30
DOI REFERENCE: https://doi.org/10.2298/TSCI180406188K
REFERENCES
  1. Wang, W. et al. Scanning force microscopy of 665 DNA molecules elongated by convective fluid flow in an evaporating 666 droplet. Biophys. J. 75, (1998), 513−520. 667.
  2. Chopra, M. etal. DNA 668 molecular configurations in an evaporating droplet near a glass surface. J. Rheol. 47, (2003), 1111.
  3. Kawase, T. et al. Inkjet 659 printed via-hole interconnections and resistors for all-polymer 660 transistor circuits. Adv. Mater. 661, (2001), 13, 1601−1605.
  4. de Gans, B.J. et al. Inkjet printing 662 of polymers: State of the art and future developments. Adv. Mater. 663 (2004), 16, 203−213.
  5. Saito, M. et al. Evaporation and combustion of a 671 single fuel droplet in acoustic fields. Fuel (1994), 73, 349−353. 672.
  6. Park, C.W. et al. Evaporation-combustion affected by 673 in-cylinder, reciprocating porous regenerator. J. Heat Transfer (2002), 674 124, 184−194.
  7. MURKO, V. I. et al. Investigation of the spraying mechanism and combustion of the suspended coal fuel. J. Thermal Science 19, (2015), 243-251.
  8. Bar-Cohen, A. et al. Direct liquid cooling of high flux micro and nano electronic components, Proc. IEEE 94 (8) (2006) 1549-1570.
  9. CHEN, Z. et al. Numerical simulation of single-nozzle large scale spray cooling on drum wall. J. Thermal Science 22, (2018), 359-370.
  10. David, S. et al. Experimental investigation of the effect of thermal properties of the substrate in the wetting and evaporation of sessile drops, Colloids surf. A 298, (2007), 108-114..
  11. Dunn, G. et al. The strong influence of substrate conductivity on droplet evaporation, Journal of Fluid Mechanics. March. 623, (2009), 329-351.
  12. Lopes, M. C. et al. Influence of the substrate thermal properties on sessile droplet evaporation: Effect of transient heat transport, Colloids Surfaces A: Physicochem. Eng. Aspects 432, (2013), 64-70.
  13. Strotos, G. et al. Numerical investigation on the evaporation of droplets depositing on heated surfaces at low weber numbers, International journal of heat and mass transfer 51, (2008), 1516-1529.
  14. Ait Saada, M. et al. Evaporation of a sessile drop with pinned or receding contact line on a substrate with different thermophysical properties, International journal of heat and mass transfer 58, (2013), 197-208.
  15. Picknett, R.G. et al. The evaporation of sessile or pendant drops in still air, J. Colloid Interface Sci. 61, (1977), 336-350.
  16. Shanahan, M.E.R. Simple theory of stick-slip wetting hysteresis, Langmuir 11, (1995), 1041-1043.
  17. Orejon, D. et al. Stick-slip of evaporating droplets: substrate hydrophobicity and nanoparticle concentration, Langmuir 27 (2011) 12834-12843.
  18. Bourgès-Monnier, C. et al. Influence of evaporation on contact angle, Langmuir 11, (1995), 2820-2829.
  19. Bormashenko, E. et al. Evaporation of droplets on strongly and weakly pinning surfaces and dynamics of the triple line, Colloids Surf. A 385, (2011), 235-240.
  20. Moffat, J.R. et al. Effect of TiO2 nanoparticles on contact line stick-slip behavior of volatile drops, J. Phys. Chem. B 113, (2009), 8860-8866.
  21. Bodiguel H. et al. Stick-slip patterning at low capillary numbers for an evaporating colloidal suspension, Langmuir 26, (2010), 10758-10763.
  22. Gui Lu. Et al. Internal flow in evaporating droplet on heated solid surface, International journal of heat and mass transfer 54 (2011° 4437-4447).
  23. Kai Yang. Et al. A fully coupled numerical simulation of sessile droplet evaporation using Arbitrary Lagrangian-Eulerian formulation, International journal heat and mass transfer 70 (2014) 409-420.
  24. Ouenzerfi, S. et al. Experimental droplet study of inverted Marangoni effect of a binary liquid mixture on a non-uniform heated substrate, Langmuir 32, (2016), 2378-2388.
  25. Pin C. et al. Evaporation of Binary Sessile Drops: Infrared and Acoustic Methods To Track Alcohol Concentration at the Interface and on the Surface, Langmuir 32, (2016), 9836-9845.
  26. Semenov, S. et al. Computer simulations of quasi-steady evaporation of sessile liquid droplets, Prog. Coll. Pol. Sci. S 138, (2011), 115-120.
  27. Ruiz, O.E. et al. Evaporation of water droplets placed on a heated horizontal surface, J. Heat Transfer - Trans. ASME 124, (5), (2002), 854-863.
  28. Murisic, N. et al. On evoration of sessile drops with moving contact lines, J. Fluid Mech. 679, (2011), 219-246.
  29. Hu, H. et al. Evaporation of a sessile droplet on a substrate, J. Phys. Chem. B 106, (6), (2002), 1334-1344.
  30. Girard, F. et al. On the effect of Marangoni flow on evaporation rates of heated water drops, Langmuir 24, (17), (2008), 9207-9210.
  31. Mollaret, R. et al. Experimental and numerical investigation of the evaporation into air of a drop on a heated surface, Chem. Eng. Res. Des. 82, (4), (2004), 471-480.
  32. Widjaja, E. et al. Numerical study of vapor phase diffusion driven sessile drop evaporation. Computers and chemical Engineering 32, (2008), 2169-2178.
  33. Galvin, K.P. A conceptually simple derivation of the Kelvin equation, Chem. Eng. Sci. 60, (2005), 4659.