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Numerical characterization of two alternative-to-diesel fuels using a moments spray model
Technical Paper
2014-01-1422
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The need to evaluate other fuel types for use in internal combustion engines has increased with the concerns related to the limited availability of fossil fuels and the need to reduce emissions.
In this assessment, two alternative-to-diesel fuels, dimethyl ether and biodiesel, are characterized by their spray tip penetration at different axial distances from the nozzle tip and at different ambient pressure values. The sauter mean diameter values at various axial distances from the injector tip are also evaluated. A novel diesel spray model that presents the hydrodynamics features of sprays from the moments derived from a Gamma size distribution and the droplet-size distribution function, rather than from droplet-size classes, is used for the numerical predictions.
The results indicate that the spray tip penetration for both fuels increases rapidly initially but the rate of increase slows at the later stages of the fuel injection. However, with increases in the ambient pressure values the predicted tip penetration decreases for both fuel sprays. Larger spray tip penetration and droplet size values are also predicted for the biodiesel fuel compared to the dimethyl ether fuel. These suggest better atomization at the given conditions for the dimethyl ether fuel spray. The predictions correctly capture the trends from the experimental data. However, there are differences between the predicted and experimental values at the early spray injection times. Thus, specific analytical models for the initial droplet size distribution and droplet break-up regime for the alternative fuel sprays might be required to improve the numerical model.
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Citation
Emekwuru, N., "Numerical characterization of two alternative-to-diesel fuels using a moments spray model," SAE Technical Paper 2014-01-1422, 2014, https://doi.org/10.4271/2014-01-1422.Also In
References
- DeCicco , J. , Freda F. , and Feng A. Global warming on the road: the climate impact of America's automobiles Environmental Defense 2006
- Demirbas , A. Alternatives to petroleum diesel fuel Energy Sources, Part B. 2 4 343 351 2007 10.1080/15567240600629518
- Soltic , P. , Edenhauser , D. , Thurnheer , T. , Schreiber , D. , and Sankowski , A. Experimental investigation of mineral diesel fuel, GTL fuel, RME and neat soybean and rapeseed oil combustion in a heavy duty on-road engine with exhaust gas aftertreatment Fuel. 88 1 1 8 2009 10.1016/j.fuel.2008.07.028
- Wang , H. W. , Zhou , L. B. , Jiang , D. M. , and Huang , Z. H. Study on the performance and emissions of a compression ignition engine fuelled with dimethyl ether Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 214 1 101 106 2000 10.1243/0954407001527268
- Lee , S-W. , Murata , Y. , and Daisho , Y. Spray and combustion characteristics of dimethyl ether fuel Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219 1 97 102 2005 10.1243/095440705X6380
- Ying , W. , Longboa , Z. , Zhongji , Y. , and Hongyi , D. Study on combustion and emission characteristics of a vehicle engine fuelled with dimethyl ether Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219 2 263 269 2005 10.1243/095440705X6631
- Pan , J. , Yang , W. , Chou , S. , Li , D. , Xue , H. , Zhao , J. , and Tang , A. Spray and combustion visualization of bio-diesel in a direct injection diesel engine Thermal Science 17 1 279 289 2013 10.2298/TSCI111211107P
- Boggavarapu , P. , and Ravikrishna , R. V. A Review on Atomization and Sprays of Biofuels for IC Engine Applications International Journal of Spray and Combustion Dynamics 5 2 85 122 2013 10.1260/1756-8277.5.2.85
- Yamane , K. , Ueta , A. , and Shimamoto , Y. Influence of physical and chemical properties of biodiesel fuels on injection, combustion and exhaust emission characteristics in a direct injection compression ignition engine International Journal of Engine Research 2 4 249 261 2001 10.1243/1468087011545460
- Kim , H-J. , Park , S-H , and Lee , C-S. A study on the macroscopic spray behavior and atomization characteristics of biodiesel and dimethyl ether sprays under increased ambient pressure Fuel Processing Technology 91 3 354 363 2010 10.1016/j.fuproc.2009.11.007
- No , Soo-Young Spray Characteristics in CI Engines Fuelled with Vegetable Oils and Its Derivatives ILASS-Europe 2010, 23 rd Annual Conference on Liquid Atomization and Spray Systems Brno, Czech Republic September 6 8 2010
- Barata , J. Modelling of biofuel droplets dispersion and evaporation Renewable Energy 33 4 769 779 2008 10.1016/j.renene.2007.04.019
- Park , S. H. , Kim , H. J. , and Lee , C. S. Macroscopic spray characteristics and breakup performance of dimethyl ether (DME) fuel at high fuel temperatures and ambient conditions Fuel 89 10 3001 3011 2010 10.1016/j.fuel.2010.05.002
- Emekwuru , N. G. Progress with the analysis of dimethyl ether sprays with a moments spray model ICLASS-2012, Proceedings of the 12 th Triennial International Conference on Liquid Atomization and Spray Systems Gutheil , E. , and Tropea , C. Heidelberg, Germany September 2 6 2012 978-88-903712-1-9
- Emekwuru , N. and Watkins , A. Application of a Moments Spray Model to Solid Cone Diesel Sprays SAE Technical Paper 2011-01-1843 2011 10.4271/2011-01-1843
- Emekwuru , N. A Number Size Distribution Moments Based Solid Cone Diesel Spray Model: Assessment of Droplet Breakup Models Based on Different Distribution Functions SAE Technical Paper 2012-01-1260 2012 10.4271/2012-01-1260
- Emekwuru , N.G. , and Watkins , A.P. Analysis of a Two-Fluid Sprayer and its use to develop the Number Size Distribution Moments Spray Model, Part II: Computational Analysis Atomization and Sprays 20 8 653 672 2010 10.1615/AtomizSpr.v20.i8.10
- Launder , B.E. , and Spalding , D.B. Mathematical Models of Turbulence Academic Press London 1972 0124380506
- G. Emekwuru , N. Modeling of Narrow-Angle Sprays Using a Spray Model Based on the Moments of the Droplet Size Distribution SAE Technical Paper 2013-01-1593 2013 10.4271/2013-01-1593