Presented at the 2nd International Symposium on Innovative Approaches in Scientific Studies (ISAS2018-Winter), Samsun, Turkey, Nov 30, 2018

SETSCI Conference Proceedings, 2018, 3, Page (s): 707-710 , https://doi.org/

Published Date: 31 December 2018    | 1437     11

In many engineering applications such as aerospace, automotive and telecommunications, icing leads to mechanical
and socio-economic problems such as efficiency reduction, decreased power transmission, security threat, material damage and
energy waste. Therefore, it is important to investigate anti-icing applications. Nowadays, the methods used to prevent or reduce
ice formation are inadequate, in addition this methods are costly (e.g. laser application) and harmful to the environment due to
applications like chemical spraying. On the other hand, as a promising passive anti-icing application, superhydrophobic (waterrepellent) surfaces come to the fore. Although anti-icing surfaces with low ice adhesion behavior are already used as a precaution.
This method is applied to facilitate the separation of ice from the surface after the formation of ice. However, we know that icing
is caused by the condensation of moisture in the environment on surfaces exposed to subzero temperatures or by the impact of
droplets on the cold surfaces. In addition, studies show that once the ice has taken place, the water adhesion on the surface will
increase and the icing process will accelerate. It is therefore more plausible to focus on the investigation and application of
superhydrophobic surfaces instead of icephobic surfaces. The superhydrophobic surfaces, which have been proven to be
applicable as an anti-icing measure, are characterized by the fact that the droplets form a large contact angle with the surface.
While the surface-contacting interface of the droplet is thus reduced, its ability to move on the surface increases. Thus, the droplet
can easily leave the surface by gravity and / or the flow of fluid in contact with the droplet after it has hit the surface or formed
almost as a sphere on the surface. The parameters that affect the moving ability of liquids on a surface are of course not only
surface properties. However, it should be noted that the common parameter for all liquids are the surface properties.
Superhydrophobic surfaces have certain limitations besides the mentioned advantages. These include high precision in surface
treatment and production; methods such as coating and painting applied to the surface are not resistant to extreme environmental
conditions; at certain temperatures the surface is going to shed its superhydrophobicity. Although the constraints have been
examined in the literature, there are very few and superficial information about the properties of the superhydrophobic surfaces
in which environmental conditions are maintained.  

Keywords - Anti-icing, Superhydrophobicity, Micro-structured Surfaces, Heat Transfer, Fluid Mechanics

[1] L. Oberli, D. Caruso, C. Hall, M. Fabretto, P. J. Murphy, and D. Evans, “Condensation and freezing of droplets on superhydrophobic surfaces,” Adv. Colloid Interface Sci., vol. 210, pp. 47–57, 2014.
[2] A. Bisetto, D. Torresin, M. K. Tiwari, D. Del Col, and D. Poulikakos, “Dropwise condensation on superhydrophobic nanostructured surfaces: Literature review and experimental analysis,” J. Phys. Conf. Ser., vol. 501, no. 1, 2014.
[3] G. Momen, R. Jafari, and M. Farzaneh, “Ice repellency behaviour of superhydrophobic surfaces: Effects of atmospheric icing conditions and surface roughness,” Appl. Surf. Sci., vol. 349, pp. 211–218, 2015.
[4] G. Fang and A. Amirfazli, “Understanding the anti-icing behavior of superhydrophobic surfaces,” Surf. Innov., 2014.
[5] B. M. L. Koch, A. Amirfazli, and J. A. W. Elliott, “Modeling and Measurement of Contact Angle Hysteresis on Textured HighContact-Angle Surfaces,” 2014.
[6] A. M. Macner, S. Daniel, and P. H. Steen, “Condensation on surface energy gradient shifts drop size distribution toward small drops,” Langmuir, vol. 30, no. 7, pp. 1788–1798, 2014.
[7] F. Chu, X. Wu, and Q. Ma, “Condensed droplet growth on surfaces with various wettability,” Appl. Therm. Eng., vol. 115, pp. 1101–1108, 2017.
[8] A. L. Yarin, “DROP IMPACT DYNAMICS: Splashing, Spreading, Receding, Bouncing…,” Annu. Rev. Fluid Mech., vol. 38, no. 1, pp. 159–192, 2006.
[9] F. Chu, Z. Yuan, X. Zhang, and X. Wu, “Energy analysis of droplet jumping induced by multi-droplet coalescence: The influences of droplet number and droplet location,” Int. J. Heat Mass Transf., vol. 121, pp. 315–320, 2018.
[10] C. Tang et al., “Dynamics of droplet impact on solid surface with different roughness,” Int. J. Multiph. Flow, vol. 96, pp. 56–69, 2017.
[11] H. Almohammadi and A. Amirfazli, “Asymmetric Spreading of a Drop upon Impact onto a Surface,” Langmuir, 2017.
[12] D. Richard, C. Clanet, and D. Quéré, “Surface phenomena: Contact time of a bouncing drop,” Nature, vol. 417, no. 6891, p.811, 2002.
[13] M. Mohseni, P. Mertiny, and A. Amirfazli, “Electro-Thermal Icing Mitigation System for Polymeric Composite Airfoil,” pp. 1–8, 2016.
[14] A. A. C. Antonini, M. Marengo, “Superhydrophobic Coatings as a new Strategy for Energy Saving Anti / de-icing Systems,” ILASS –Eur. 2011, 24th Eur. Conf. Liq. At. Spray Syst. Estoril, Port. Sept. 2011, no. September, pp. 1–6, 2011.
[15] C. Antonini, M. Innocenti, T. Horn, M. Marengo, and A. Amirfazli, “Understanding the effect of superhydrophobic coatings on energy reduction in anti-icing systems,” Cold Reg. Sci. Technol., vol. 67, no. 1–2, pp. 58–67, 2011.
[16] S. Tarquini, C. Antonini, A. Amirfazli, M. Marengo, and J. Palacios, “Investigation of ice shedding properties of superhydrophobic coatings on helicopter blades,” Cold Reg. Sci. Technol., 2014.
[17] D. K. Mandal, A. Criscione, C. Tropea, and A. Amirfazli, “Shedding of Water Drops from a Surface under Icing Conditions,” Langmuir, vol. 31, no. 34, pp. 9340–9347, 2015.