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Comparison of In-Nozzle Flow Characteristics of Naphtha and N-Dodecane Fuels
Technical Paper
2017-01-0853
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is well known that in-nozzle flow behavior can significantly influence the near-nozzle spray formation and mixing that in turn affect engine performance and emissions. This in-nozzle flow behavior can, in turn, be significantly influenced by fuel properties. The goal of this study is to characterize the behavior of two different fuels, namely, a straight-run naphtha that has an anti-knock index of 58 (denoted as “Full-Range Naphtha”) and n-dodecane, in a simulated multi-hole common-rail diesel fuel injector. Simulations were carried out using a fully compressible multi-phase flow representation based on the mixture model assumption with the Volume of Fluid method. Our previous studies have shown that the characteristics of internal and near-nozzle flow are strongly related to needle motion in both the along- and off-axis directions. A robust computational fluid dynamics setup was first developed, accounting for needle motion, and validated against experimental data for ndodecane fuel. Detailed simulations revealed the influence of fuel properties on the propensity for cavitation for both fuels. The two fuels were compared with respect to global parameters such as mass flow rate at the orifice exit and area contraction coefficients, and local parameters such as velocity distribution inside the sac and orifices. Parametric investigations were also performed to understand the influence of injection pressure and temperature, and geometry effects on both fuels. Owing to its higher saturation pressure, Full-Range Naphtha was observed to cavitate more than n-dodecane across all the investigated conditions. Although Full-Range Naphtha has a lower density than n-dodecane, owing to its lower viscosity, the mass flow rates of both fuels at the nozzle exit were comparable. The authors also observed that the fuel propensity for cavitation could locally influence the flow structures and enhance or dampen their evolution. This observation may have a profound influence in the needle seat region, wherein at low needle lift, under choked conditions, enhanced cavitation was observed with the Full-Range Naphtha.
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Torelli, R., Som, S., Pei, Y., Zhang, Y. et al., "Comparison of In-Nozzle Flow Characteristics of Naphtha and N-Dodecane Fuels," SAE Technical Paper 2017-01-0853, 2017, https://doi.org/10.4271/2017-01-0853.Data Sets - Support Documents
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References
- Zhang , Y. , Voice , A. , Tzanetakis , T. , Traver , M. , and Cleary , D. An Evaluation of Combustion and Emissions Performance with Low Cetane Naphtha Fuels in a Multicylinder Heavy-Duty Diesel Engine Journal of Engineering for Gas Turbines and Power 138 102805-1 10 2016 10.1115/1.4032879
- Zhang , Y. , Kumar , P. , Traver , M. , and Cleary , D. Conventional and Low Temperature Combustion Using Naphtha Fuels in a Multi-Cylinder Heavy-Duty Diesel Engine SAE Int. J. Engines 9 2 1021 1035 2016 10.4271/2016-01-0764
- Dukowitz , J. K. A Particle-Fluid Numerical Modeling for Liquid Sprays Journal of Computational Physics 35 229 253 1980 10.1016/0021-9991(80)90087-X
- Amsden , A. A. , O'Rourke , P. J. , and Butler , T. D. KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays LA-11560-MS 1989
- Torelli , R. , D’Errico , G. , Lucchini , T. , Ikonomou , V. , and McDavid , R. M. A Spherical Volume Interaction DDM Approach for Diesel Spray Modeling Atomization and Sprays 25 325 374 2015 10.1615/AtomizSpr.2015010623
- Senecal , P. , Pomraning , E. , Richards , K. , Briggs , T. et al. Multi-Dimensional Modeling of Direct-Injection Diesel Spray Liquid Length and Flame Lift-off Length using CFD and Parallel Detailed Chemistry SAE Technical Paper 2003-01-1043 2003 10.4271/2003-01-1043
- Som , S. , and Aggarwal , S. K. Effects of Primary Breakup Modeling on Spray and Combustion Characteristics of Compression Ignition Engines Combustion and Flame 157 1179 1193 2010 10.1016/j.combustflame.2010.02.018
- Reitz , R. D. Modeling Atomization Processes in High-pressure Vaporizing Sprays Atomisation and Spray Technology 3 309 337 1987
- Battistoni , M. , Grimaldi , C. , and Mariani , F. Coupled Simulation of Nozzle Flow and Spray Formation Using Diesel and Biodiesel for CI Engine Applications SAE Technical Paper 2012-01-1267 2012 10.4271/2012-01-1267
- Powell C.F. , Kastengren , A.L. , Liu , Z. and Fezzaa , K. The Effects of Diesel Injector Needle Motion on Spray Structure J. Eng. Gas Turbines Power 133 1 012802 2010 10.1115/1.4001073
- Kastengren , A. L. , Tilocco , F. Z. , Powell , C. F. , and Fezzaa , K. Initial Evaluation of Engine Combustion Network Injectors with X-Ray Diagnostics ILASS Americas, 23rd Annual Conference on Liquid Atomization and Spray Systems Ventura, CA May 2011
- Agarwal , A. K. , Som , S. , Shukla , P. C. , Goyal , H. , and Longman , D. E. In-nozzle flow and spray characteristics for mineral diesel, Karanja, and Jatropha biodiesels Applied Energy 156 138 148 2015 10.1016/j.apenergy.2015.07.003
- Som , S. , Longman , D. E. , Ramírez , A. I. , and Aggarwal , S. K. A comparison of injector flow and spray characteristics of biodiesel with petrodiesel Fuel 89 12 4014 4024 2010 10.1016/j.fuel.2010.05.004
- Saha , K. , Abu-Ramadan , E. , and Li , X. Modified Single-Fluid Cavitation Model for Pure Diesel and Biodiesel Fuels in Direct Injection Fuel Injectors Journal of Engineering for Gas Turbines and Power 135 062801-1 8 2014 10.1115/1.4023464
- Battistoni , M. and Grimaldi , C. Analysis of Transient Cavitating Flows in Diesel Injectors Using Diesel and Biodiesel Fuels SAE Int. J. Fuels Lubr. 3 2 879 900 2010 10.4271/2010-01-2245
- Bilicki , Z. , and Kestin , J. Physical Aspects of the Relaxation Model in Two-Phase Flow Proceedings of the Royal Society London A 428 379 397 1990 10.1098/rspa.1990.0040
- Senecal , P. , Richards , K. , Pomraning , E. , Yang , T. et al. A New Parallel Cut-Cell Cartesian CFD Code for Rapid Grid Generation Applied to In-Cylinder Diesel Engine Simulations SAE Technical Paper 2007-01-0159 2007 10.4271/2007-01-0159
- Richards , K. J. , Senecal , P. K. , and Pomraning , E. CONVERGE Manual (Version 2.3) Convergent Science Inc. Madison, WI - USA 2016
- Zhao , H. , Quan , S. , Dai , M. , Pomraning , E. , Senecal , P. K. , Xue , Q. , Battistoni , M. , and Som , S. Validation of a Three-Dimensional Internal Nozzle Flow Model Including Automatic Mesh Generation and Cavitation Effects Journal of Engineering for Gas Turbines and Power 136 092603-1 10 2014 10.1115/1.4027193
- Battistoni , M. , Som , S. , and Longman , D. E. Comparison of Mixture and Multifluid Models for In-Nozzle Cavitation - Prediction Journal of Engineering for Gas Turbines and Power 136 061506-1 12 2014 10.1115/1.4026369
- Battistoni , M. , Xue , Q. , Som , S. , and Pomraning , E. Effect of Off-Axis Needle Motion on Internal Nozzle and Near Exit Flow in a Multi-Hole Diesel Injector SAE Int. J. Fuels Lubr. 7 1 167 182 2014 10.4271/2014-01-1426
- Winklhofer , E. , Kull , E. , Kelz , E. , and Morozov , A. Comprehensive Hydraulic and Flow Field Documentation in Model Throttle Experiments under Cavitation Conditions ILASS-Europe 2001 Zurich
- Duke , D. J. , Kastengren , A. L. , Tilocco , F. Z. , and Powell , C. F. Synchrotron X-Ray Measurements of Cavitation Proceedings of ILASS Americas 2013 Pittsburgh, PA - USA
- Payri , R. , Gil , A. , Plazas , A. , and Giménez , B. Influence of Nozzle Seat Type on Internal Flow of Convergent Nozzles SAE Technical Paper 2004-01-2010 2004 10.4271/2004-01-2010
- Benajes , J. , Pastor , J. V. , Payri , R. , and Plazas , A. H. Analysis of the Influence of Diesel Nozzle Geometry in the Injection Rate Characteristic Journal of Fluids Engineering 126 1 63 71 2004
- Launder , B. E. , and Sharma , B. I. Application of the Energy Dissipation Model of Turbulence to the Calculation of Flow near a Spinning Disc Letters in Heat and Mass Transfer 1 131 138 1974
- Schmidt , D.P. , Gopalakrishnan , S. , and Jasak , H. Multi-Dimensional Simulation of Thermal Non-Equilibrium Channel Flow International Journal of Multiphase Flow 36 284 292 2010
- Xue , Q. , Battistoni , M. , Som , S. , Quan , S. et al. Eulerian CFD Modeling of Coupled Nozzle Flow and Spray with Validation Against X-Ray Radiography Data SAE Int. J. Engines 7 2 1061 1072 2014 10.4271/2014-01-1425
- Saha , K. , Som , S. , Battistoni , M. , Li , Y. et al. Numerical Investigation of Two-Phase Flow Evolution of In- and Near-Nozzle Regions of a Gasoline Direct Injection Engine During Needle Transients SAE Int. J. Engines 9 2 1230 1240 2016 10.4271/2016-01-0870
- Saha , K. , Som , S. , Battistoni , M. , Li , Y. , Quan , S. , and Senecal , P. K. Numerical Simulation of Internal and Near-Nozzle Flow of a Gasoline Direct Injection Fuel Injector Journal of Physics: Conference Series 656 012100 2015 10.1088/1742-6596/656/1/012100
- Downar-Zapolski , P. , Bilicki , Z. , Bolle , L. , and Franco , J. The Non-Equilibrium Relaxation Model for One-dimensional Flashing Liquid Flow International Journal of Multiphase Flow 22 3 473 83 1996 10.1016/0301-9322(95)00078-X
- Kastengren , A. L. , Powell , C. F. , Liu , Z. , Fezzaa , K. , and Wang , J. High-Speed X-Ray Imaging of Diesel Injector Motion Proc. of the ASME Internal Combustion Engine Division Spring Technical Conference, Paper ICES2009-76032 2009
- Kastengren , A. L. , Tilocco , F. Z. , Powell , C. F. , Manin , J. , Pickett , L. M. , Payri , R. , and Bazyn , T. Engine Combustion Network (ECN): Measurements of Nozzle Geometry and Hydraulic Behavior Atomization and Sprays 22 12 1011 1052 2013
- Manin , J. , Kastengren , A. L. , Payri , R. Understanding the Acoustic Oscillations Observed in the Injection Rate of a Common-Rail Direct Injection Diesel Injector Journal of Engineering for Gas Turbines and Power 134 122801-1 10 2012 10.1115/1.4007276
- AspenTech Aspen HYSYS webpage Aspen Technology, Inc. Bedford MA, 01730 http://www.aspentech.com/products/aspen-hysys October 18 2016
- Linstrom , P. J. , and Mallard , W. G. NIST Chemistry WebBook, NIST Standard Reference Database Number 69 National Institute of Standards and Technology Gaithersburg MD 20899 http://webbook.nist.gov July 29 2016
- Green , D. W. , and Perry , R. Perry's Chemical Engineers' Handbook 8th McGraw-Hill Education 1984 978-0071422949
- Moulai , M. , Grover , R. , Parrish , S. , and Schmidt , D. Internal and Near-Nozzle Flow in a Multi-Hole Gasoline Injector Under Flashing and Non-Flashing Conditions SAE Technical Paper 2015-01-0944 2015 10.4271/2015-01-0944
- Baldwin , E. T. , Grover , R. O. , Duke , D. J. , Matusik , K. E. , Kastengren , A. L. , Powell , C. F. , Parrish S. E. , and Schmidt , D. P. String Flash-Boiling in Flashing and Non-Flashing Gasoline Direction Injection Simulations with Transient Needle Motion Proceedings of ILASS Americas 2016 Dearborn, MI - USA
- Naber , J. and Siebers , D. Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays SAE Technical Paper 960034 1996 10.4271/960034
- Siebers , D. Scaling Liquid-Phase Fuel Penetration in Diesel Sprays Based on Mixing-Limited Vaporization SAE Technical Paper 1999-01-0528 1999 10.4271/1999-01-0528
- Pei , Y. , Zhang , Y. , Kumar , P. , Traver , M. et al. CFD-Guided Heavy Duty Mixing Controlled Combustion System Optimization with a Gasoline-Like Fuel SAE Technical Paper 2017-01-0550 2017 10.4271/2017-01-0550