Numerical investigation of ethanol and acetone spray injection into gaseous environment

Document Type : Research Article

Authors

Energy Conversion, Mechanical Engineering department, Tarbiat Modares University, Tehran, Iran

Abstract

In this paper, the effect of evaporating sprays of ethanol and acetone injected into a cylindrical gaseous environment is numerically investigated. To make this investigation the Eulerian gas phase equations together with the Lagrangian liquid phase equations are solved assuming a two-way coupling between the two phases. According to the results, after a certain time from the start of injection, the overall percentage of total evaporation of acetone becomes significantly higher than ethanol, but at the early spraying time, both alcohols had similar overall evaporation rates. Also, in terms of spray tip penetration, they have almost the same amount of progress and more or less the same behavior. Also due to the almost identical injection flow rate of the droplets, the effects on the velocity fields in the gas phase have been almost similar. The important point to compare is the gas phase temperature field for both sprays after 1.5 ms of injection. The ambient temperature becomes much lower in ethanol spray because ethanol’s boiling temperature and latent heat are both much higher than acetone.

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[1] J.K. Floes, A review of: William Bartok and Adel F. Sarofim, eds., “Fossil Fuel Combustion”. (New York: Wiley, 1991). $99.95, Energy Sources, 14(3) (1992) 331-332.
[2] M. Al Qubeissi, R. Kolodnytska, S.S. Sazhin, Biodiesel fuel droplets: modelling of heating and evaporation processes, in:  25th European Conference on Liquid Atomization and Spray Systems, 2013.
[3] C.K. Law, H. Law, A d2-law for multicomponent droplet vaporization and combustion, AIAA journal, 20(4) (1982) 522-527.
[4] G.L. Borman, J.H. Johnson, Unsteady Vaporization Histories and Trajectories of Fuel Drops Injected into Swirling Air, in, SAE International, 1962.
[5] B. Abramzon, W.A. Sirignano, Droplet vaporization model for spray combustion calculations, International Journal of Heat and Mass Transfer, 32(9) (1989) 1605-1618.
[6] S. Sazhin, A. Elwardany, P. Krutitskii, V. Depredurand, G. Castanet, F. Lemoine, E. Sazhina, M.R. Heikal, Multicomponent droplet heating and evaporation: Numerical simulation versus experimental data, International Journal of Thermal Sciences - INT J THERM SCI, 50 (2011) 1164-1180.
[7] C. Maqua, Contribution à la compréhension de l'évaporation de gouttes de combustible bi-composant à l'aide de méthodes optiques, 2007.
[8] S.S. Sazhin, A. Elwardany, P.A. Krutitskii, G. Castanet, F. Lemoine, E.M. Sazhina, M.R. Heikal, A simplified model for bi-component droplet heating and evaporation, International Journal of Heat and Mass Transfer, 53(21) (2010) 4495-4505.
[9] H.J. Kim, H.K. Suh, S.H. Park, C.S. Lee, An Experimental and Numerical Investigation of Atomization Characteristics of Biodiesel, Dimethyl Ether, and Biodiesel−Ethanol Blended Fuel, Energy & Fuels, 22(3) (2008) 2091-2098.
[10] D.H. Qi, Y.Z. Bian, Z.Y. Ma, C.H. Zhang, S.Q. Liu, Combustion and exhaust emission characteristics of a compression ignition engine using liquefied petroleum gas–Diesel blended fuel, Energy Conversion and Management, 48(2) (2007) 500-509.
[11] J. Gao, D. Jiang, Z. Huang, Spray properties of alternative fuels: A comparative analysis of ethanol–gasoline blends and gasoline, Fuel, 86(10) (2007) 1645-1650.
[12] L.-S. Fan, C. Zhu, Principles of gas-solid flows,  (2005).
[13] A.B. Basset, A treatise on hydrodynamics: With numerous examples, Cambridge, Deighton, Bell and Co., England, 1888. .
[14] J. Boussinesq, Théorie analytique de la Chaleur mise en harmonie avec la thermodynamique et avec la théorie mécanique de la lumière, Monatshefte für Mathematik und Physik, 15(1) (1904) A67-A68.
[15] J. Kaur, A.K. Tiwari, J.K. Ratan, Hydrodynamic Study of Power-Law Fluids across Unconfined Semi-Circular Cylinder at Low Reynolds Numbers: Effect of Orientation angle.
[16] T. Chan-Mou, Mean Value and Correlation Problems connected with the Motion of Small Particles suspended in a turbulent fluid, Springer Netherlands, 2013.
[17] B. Ahmadi-Befrui, A.D. Gosman, R.I. Issa, A.P. Watkins, EPISO — An implicit non-iterative solution procedure for the calculation of flows in reciprocating engine chambers, Computer Methods in Applied Mechanics and Engineering, 79(3) (1990) 249-279.
[18] S.B. Pope, Turbulent Flows, Measurement Science and Technology, 12(11) (2001) 2020-2021.
[19] S. A, in: S.N.L.E.C.N. (ECN) (Ed.) Spray A, Accessed 8, https://ecn.sandia.gov/ecn-data-search/. Nov 2017.
[20] A. P. Watkins and H. Khaleghi, “Three dimensional diesel engine spray modeling,” in International symposium on computers in engine technology, Cambridge, 1987.