This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Transient Diesel Spray Break-Up between Two Computational Fluid Dynamics Codes
Technical Paper
2018-01-0307
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Accurate modeling of the initial transient period of spray development is critical within diesel engines, as it impacts on the amount of vapor penetration and hence the combustion characteristics of the spray. In addition, in multiple injection schemes shorter injections will be mostly, if not totally, within the initial transient period. This paper investigates how two different commercially available Computational Fluid Dynamics (CFD) codes (hereafter noted as Code 1 and Code 2) simulate transient diesel spray atomization, in a non-combusting environment. The case considered for comparison is a single-hole injection of n-dodecane representing the Engine Combustion Network’s ‘Spray A’ condition. It was identified that the different spray break-up models used by the codes (Reitz-Diwakar for Code 1, Kelvin-Helmholtz/Rayleigh-Taylor (KH-RT) for Code 2) had a significant impact on the transient liquid penetration. From differing initial base setups, Code 1’s case was then matched as closely as possible to Code 2’s case, applying the KH-RT break-up model in Code 1 with the same constants for the break-up and turbulence models as in Code 2. Despite the nominal equivalence between the two simulations, there existed a discrepancy in liquid length prediction throughout injection between codes. This was thought to be caused by differing implementations of the KH-RT model in both codes. Therefore, a new implementation of the KH-RT model was input into Code 1 in order to allow correct matching of the liquid length to experimental data throughout the injection period. This was achieved utilizing a numerical switch based on the Ohnesorge number. Results from the new model are shown and compared to the previous implementation, showing an improved ability to match to experimental data. Differences between the results from the modified KH-RT model in Code 1 and the standard implementation in Code 2 are also discussed.
Recommended Content
Authors
Topic
Citation
Nicholson, L., Fang, X., Camm, J., Davy, M. et al., "Comparison of Transient Diesel Spray Break-Up between Two Computational Fluid Dynamics Codes," SAE Technical Paper 2018-01-0307, 2018, https://doi.org/10.4271/2018-01-0307.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 | ||
Unnamed Dataset 8 | ||
Unnamed Dataset 9 | ||
Unnamed Dataset 10 | ||
Unnamed Dataset 11 | ||
Unnamed Dataset 12 |
Also In
References
- Koss , H.J. , Wiartalla , A. , and Backer , H. 1993
- Siebers , D.L. and Higgins , B. Flame Lift-Off on Direct-Injection Diesel Sprays under Quiescent Conditions SAE Technical Paper 2001-01-0530 2001 10.4271/2001-01-0530
- Senecal , P.K. , Pomraning , E. , Richards , K. , and Som , S. 2012
- Pickett , L.M. , Genzale , C.L. , Bruneaux , G. , Malbec , L.M. et al. Comparison of Diesel Spray Combustion in Different High-Temperature, High-Pressure Facilities SAE Int. J. Engines 3 2 156 181 2010 10.4271/2010-01-2106
- Pickett , L.M. Introducing the Engine Combustion Network International Multidimensional Engine Modeling User’s Group Meeting 2008
- Senecal , P.K. , Pomraning , E. , Richards , K.J. , Briggs , T.E. et al. Multi-Dimensional Modeling of Direct-Injectcion 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
- Lucchini , T. , D’Errico , G. , Ettore , D. , and Ferrari , G. Numerical Investigation of Non-Reacting and Reacting Diesel Sprays in Constant-Volume Vessels SAE Int. J. Fuels Lubr. 2 1 966 975 2009 10.4271/2009-01-1971
- Som , S. , Senecal , P.K. , and Pomraning , E. Comparison of RANS and LES Turbulence Models against Constant Volume Diesel Experiments 24th Annual Conference on Liquid Atomization and Spray Systems, ILASS Americas San Antonio 2012
- Blomberg , C.K. , Zeugin , L. , Pandurangi , S.S. , Bolla , M. et al. Modeling Split Injections of ECN ‘Spray A’ Using a Conditional Moment Closure Combustion Model with RANS and LES SAE Int. J. Engines 9 4 2107 2119 2016 10.4271/2016-01-2237
- Beard , P. , Duclos , J.M. , Habchi , C. , Bruneaux , G. et al. Extension of Lagrangian-Eulerian Spray Modeling: Application to High Pressure Evaporating Diesel Sprays SAE Technical Paper 2000-01-1893 2000 10.4271/2000-01-1893
- Schmidt , D.P. and Rutland , C.J. A New Droplet Collision Algorithm Journal of Computational Physics 164 2000
- Schmidt , D.P. and Senecal , P.K. Improving the Numerical Accuracy of Spray Simulations SAE Technical Paper 2002-01-1113 2002 10.4271/2002-01-1113
- Burluka , A.A. and Borghi , R. Development of a Eulerian Model for the ‘atomization’ of a Liquid Jet Atomization and Sprays 11 2001
- Som , S. , D’Errico , G. , Longman , D. , and Lucchini , T. Comparison and Standardization of Numerical Approaches for the Prediction of Non-Reacting and Reacting Diesel Sprays SAE Technical Paper 2012-01-1263 2012 10.4271/2012-01-1263
- Mulemane , A. , Subramaniyam , S. , Lu , P.H. , Han , J.S. et al. Comparing Cavitation in Diesel Injectors Based on Different Modeling Approaches SAE Technical Paper 2004-01-0027 2004 10.4271/2004-01-0027
- Karrholm , F.P. , Tao , F. , and Nordin , N. Three-Dimensional Simulation of Diesel Spray Ignition and Flame Lift-Off Using OpenFOAM and KIVA-3V CFD Codes SAE Technical Paper 2008-01-0961 2008 10.4271/2008-01-0961
- Iynegar , S.V. , Tsang , C.W. , and Rutland , C. Validating Non-Reacting Spray Cases with KIVA-3V and OpenFoam SAE Technical Paper 2013-01-1595 2013 10.4271/2013-01-1595
- Pickett , L. www.sandia.gov/ecn/index.php 2017
- Dukowicz , J.K. A Particle-Fluid Numerical Model for Liquid Sprays Journal of Computational Physics 35 2 1980
- Launder , B.E. and Spalding , D.B. The Numerical Computation of Turbulent Flows Computer Methods in Applied Mechanics and Engineering 3 2 1974
- CMT-Motores Termicos www.cmt.upv.es/ECN03.aspx 2017
- CD-Adapco 2015
- Huh , K.Y. and Gosman , A.D. A Phenomenological Model of Diesel Spray Atomization Proceedings of the International Conference on Multiphase Flows 2 515 518 1991
- Reitz , R.D. and Diwakar , R. Effect of Drop Break-Up on Fuel Sprays SAE Tehcnical Paper 860469 1986 10.4271/860469
- Gosman , A.D. and Ioannides , E. Aspects of Computer Simulation of Liquid-Fuelled Combustors AIAA 19th Aerospace Sciences Meeting St. Louis 1981
- El Wakil , M.M. , Uyehara , O.A. , and Myers , P.S. 1954
- Ranz , W.E. and Marshall , W.R. Evaporation from Drops Chem. Eng. Prog 48 3 1952
- CS Inc. 2017
- Reitz , R.D. and Diwakar , R. Structure of High-Pressure Fuel Sprays SAE Technical Paper 870598 1987 10.4271/870598
- Beale , J.C. and Reitz , R.D. Modeling Spray Atomzation with the Kelvin-Helmholtz/Rayleigh-Taylor Hybrid Model Atomization and Sprays 9 6 1999
- Xin , J. , Ricart , L. , and Reitz , R.D. Computer Modeling of Diesel Spray Atomization and Combustion Combustion Science and Technology 137 1-6 1998
- Reitz , R.D. Modeling Atomzation Processes in High-Pressure Vaporizing Sprays Atomisation and Spray Technology 3 4 1987
- Joseph , D.D. , Belanger , J. , and Beavers , G.S. Break-Up of a Liquid Drop Suddenly Exposed to a High-Speed Airstream International Journal of Multiphase Flow 25 6 1999
- Camm , J. , Davy , M. , Fang , X.H. , Doherty , L. et al. The Oxford Cold Driven Shock Tube (CDST) for Fuel Spray and Chemical Kinectics Research SAE Technical Paper 2018-01-0222 2018 10.4271/2018-01-0222