A Numerical Study on Droplet Evaporation using Mass and Heat Transfer Approach
Authors
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School of Mechanical Engineering, VIT-AP University, Guntur – 522237, Andhra Pradesh ,IN
K. Hima Teja -
School of Mechanical Engineering, VIT-AP University, Guntur – 522237, Andhra Pradesh ,INManas Kumar Pal
DOI:
https://doi.org/10.18311/jmmf/2023/35456Keywords:
Droplet Evaporation, Heat Transfer Approach, Mass Transfer ApproachAbstract
Liquid fuel is injected into many combustion devices like engines, boilers, and gas turbines where it evaporates, mixes with air, and finally burns. The combustion process influences by evaporation and corresponding air-fuel mixing. Hence, the evaporation study of the fuel droplets is important in different thermodynamic conditions. In the present paper, fuel droplet evaporation has been numerically studied by two different approaches i.e., mass transfer and heat transfer. Multiple case studies have been conducted by varying the droplet surface temperature, its initial diameter, and the temperature of ambiance to understand the influence of each parameter on the evaporation process by the two different concepts. Transfer numbers (B), evaporation constants (K), and droplet lifetime are obtained through both heat and mass transfer models. These observations are highly helpful to understand the droplet evaporation process and comparing the two different approaches to droplet evaporation modeling.
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References
Tomoaki K, et al. Evaporation and combustion of multicomponent fuel droplets. Fuel. 2014; 136:219-25. https:// doi.org/10.1016/j.fuel.2014.07.045 DOI: https://doi.org/10.1016/j.fuel.2014.07.045
Faeth GM. Evaporation and combustion of sprays. Prog Energy Combust Sci. 1983; 9(1-2):1-76. https://doi. org/10.1016/0360-1285(83)90005-9 DOI: https://doi.org/10.1016/0360-1285(83)90005-9
Tonini S, Cossali GE. A multi-component drop evaporation model based on analytical solution of Stefan-Maxwell equations. Int J Heat Mass Transf. 2016; 92:184-9. https://doi.org/10.1016/j.ijheatmasstransfer.2015.08.014 DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2015.08.014
Kozyrev AV, Sitnikov AG. Evaporation of a spherical droplet in a moderate-pressure gas. PhysicsUspekhi. 2001; 44.7:725. https://doi.org/10.1070/ PU2001v044n07ABEH000953 DOI: https://doi.org/10.1070/PU2001v044n07ABEH000953
Law CK, Law HK. A d2-law for multicomponent droplet vaporization and combustion. AIAA Journal. 1982; 20(4):522-7. https://doi.org/10.2514/3.51103 DOI: https://doi.org/10.2514/3.51103
Chauveau C, Birouk M, Gökalp I. An analysis of the d2-law departure during droplet evaporation in microgravity. Int J Multiph Flow. 2011; 37(3):252-259. https://doi.org/10.1016/j.ijmultiphaseflow.2010.10.009 DOI: https://doi.org/10.1016/j.ijmultiphaseflow.2010.10.009
Law CK. Recent advances in droplet vaporization and combustion. Prog Energy Combust Sci. 1982; 8(3):171- 201. https://doi.org/10.1016/0360-1285(82)90011-9 DOI: https://doi.org/10.1016/0360-1285(82)90011-9
Lee A, Law CK. An experimental investigation on the vaporization and combustion of methanol and ethanol droplets. Combust Sci Technol. 1992; 86(1-6):253-65. https://doi.org/10.1080/00102209208947198 DOI: https://doi.org/10.1080/00102209208947198
Sazhin SS. Modelling of fuel droplet heating and evaporation: Recent results and unsolved problems. Fuel. 2017; 196:69-101. https://doi.org/10.1016/j.fuel.2017.01.048 DOI: https://doi.org/10.1016/j.fuel.2017.01.048
Tonini S, Cossali GE. An analytical model for the evaporation of multi-component spheroidal drops based on StefanMaxwell equations. Int J Therm Sci. 2022; 171:107223. https://doi.org/10.1016/j.ijthermalsci.2021.107223 DOI: https://doi.org/10.1016/j.ijthermalsci.2021.107223
Kalkkinen J, Vesala T, Kulmala M. Binary droplet evaporation in the presence of an inert gas: An exact solution of the Maxwell-Stefan equations. Int. Commun Heat Mass Transf. 1991; 18(1):117-26. https://doi. org/10.1016/0735-1933(91)90013-T DOI: https://doi.org/10.1016/0735-1933(91)90013-T
Fuchs NA. Evaporation and droplet growth in gaseous media. Elsevier; 2013.
Renksizbulut M, Yuen MC. Experimental study of droplet evaporation in a high-temperature air stream. J Heat Transfer. 1983: 384-8. https://doi.org/10.1115/1.3245590 DOI: https://doi.org/10.1115/1.3245590
