This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Parametric Analysis of the Effect of the Fluid Properties and the Mesh Setup by Using the Schnerr-Sauer Cavitation Model
Technical Paper
2017-24-0105
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The primary target of the internal combustion engines design is to lower the fuel consumption and to enhance the combustion process quality, in order to reduce the raw emission levels without performances penalty.
In this scenario the direct injection system plays a key role for both diesel and gasoline engines. The spray dynamic behaviour is crucial in defining the global and the local air index of the mixture, which in turns affects the combustion process development. At the same time it is widely recognized that the spray formation is influenced by numerous parameters, among which also the cavitation process inside every single hole of the injector nozzle. The proper prediction of the cavitation development inside the injector nozzle holes is crucial in predicting the liquid jet emerging from them. In this mechanism the CFD simulation is of great importance because of the too small dimension of the nozzle holes, which are mostly non suitable for an accurate experimental investigation and, when they are, these analyses need to be limited to a few cases for cost reasons. Nowadays the most used cavitation model is the two-phase homogeneous mixture model, especially with the Raleigh-Plesset closure model. In the literature it is possible to find out multiple examples of validation attempts of such a model versus experimental data: generally they fail because of the systematic overestimation of the mass flow with respect to the experimental data. The main parameters identified as responsible are the fluid properties, mostly in terms of the liquid density value, and the mesh setup.
The focus of the present paper is to investigate the effective weight of each single fluid parameter, both for liquid and vapor phase, plus the mesh setup on the final pressure difference-mass flow rate curve, in terms of curve shape, curve values and evaluation of the cavitation onset/development.
Authors
Citation
Falfari, S., Bianchi, G., Cazzoli, G., Forte PhD, C. et al., "Parametric Analysis of the Effect of the Fluid Properties and the Mesh Setup by Using the Schnerr-Sauer Cavitation Model," SAE Technical Paper 2017-24-0105, 2017, https://doi.org/10.4271/2017-24-0105.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 |
Also In
References
- Soteriou C. , Aggarwal S. , El-Hannouny E. , and Longman D. Through the diesel nozzle hole - a journey of discovery II. Proc. ILASSEurope 2001
- Soteriou , C. , Andrews , R. , and Smith , M. Direct Injection Diesel Sprays and the Effect of Cavitation and Hydraulic Flip on Atomization SAE Technical Paper 950080 1995 10.4271/950080
- Arcoumanis , C. , Flora , H. , Gavaises , M. , and Badami , M. Cavitation in Real-Size Multi-Hole Diesel Injector Nozzles SAE Technical Paper 2000-01-1249 2000 10.4271/2000-01-1249
- Badock C. , Wirth R. , Fath A. , and Leipertz A. Investigation of cavitation in real size diesel injection nozzles International Journal of Heat and Fluid Flow 20 5 538 544 1999
- Chaves , H. , Knapp , M. , Kubitzek , A. , Obermeier , F. et al. Experimental Study of Cavitation in the Nozzle Hole of Diesel Injectors Using Transparent Nozzles SAE Technical Paper 950290 1995 10.4271/950290
- Bianchi , G. , Falfari , S. , Brusiani , F. , Pelloni , P. et al. Advanced Modelling of a New Diesel Fast Solenoid Injector and Comparison with Experiments SAE Technical Paper 2004-01-0019 2004 10.4271/2004-01-0019
- Bianchi G.M. , Pelloni P. , Osbat G. , Parotto M. , Gioia R.D. , Falfari S. , and Brusiani F. The role of simulation in the development of a fast-actuation solenoid c.r. injection system Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division 277 284 2004 10.1115/ICEF2004-0847
- Bianchi , G. , Falfari , S. , Brusiani , F. , Pelloni , P. et al. Numerical Investigation of Critical Issues in Multiple-Injection Strategy Operated by a New C.R. Fast-Actuation Solenoid Injector SAE Technical Paper 2005-01-1236 2005 10.4271/2005-01-1236
- Roth , H. , Gavaises , M. , and Arcoumanis , C. Cavitation Initiation, Its Development and Link with Flow Turbulence in Diesel Injector Nozzles SAE Technical Paper 2002-01-0214 2002 10.4271/2002-01-0214
- Gavaises , M. and Andriotis , A. Cavitation Inside Multi-hole Injectors for Large Diesel Engines and Its Effect on the Near-nozzle Spray Structure SAE Technical Paper 2006-01-1114 2006 10.4271/2006-01-1114
- He L. and Ruiz F. Effect of cavitation on flow and turbulence in plain orifice for high-speed atomization Atomization and Sprays 5 6 569 584 1995 10.1615/AtomizSpr.v5.i6.30
- Brusiani F. , Falfari S. , and Bianchi G.M. Definition of a CFD Multiphase Simulation Strategy to Allow a First Evaluation of the cavitation erosion risk inside high pressure injector Energy Procedia 81 755 764 2015 10.1016/j.egypro.2015.12.081
- Kawano , D. , Goto , Y. , Odaka , M. , and Senda , J. Modeling Atomization and Vaporization Processes of Flash-Boiling Spray SAE Technical Paper 2004-01-0534 2004 10.4271/2004-01-0534
- Reboud , J. , Stutz , B. , Coutier , O. Two-phase flow structure of cavitation: Experiment and modeling of unsteady effects Third International Symposium on Cavitation 1998
- Koukouvinis P. , Naseri H. , Gavaises M. Performance of turbulence and cavitation models in prediction of incipient and developed cavitation Int J Engine Res 2016 http://dx.doi.org/10.1177/1468087416658604
- Winklhofer E. , Kull E. , Kulz E. , and Morozov A. Comprehensive hydraulic and flow field documentation in model throttle experiments under cavitation conditions 2001
- Brusiani , F. , Negro , S. , Bianchi , G. , Moulai , M. et al. Comparison of the Homogeneous Relaxation Model and a Rayleigh Plesset Cavitation Model in Predicting the Cavitating Flow Through Various Injector Hole Shapes SAE Technical Paper 2013-01-1613 2013 10.4271/2013-01-1613
- Cazzoli G. , Falfari S. , Bianchi G.M. , Forte C. , and Catellani C. Assessment of the cavitation models implemented in openfoam under di-like conditions 101 638 645 2016 10.1016/j.egypro.2016.11.081
- Balaji Mohan , Wenming Yang , and Siawkiang Chou Cavitation in injector nozzle holes - a parametric study Engineering Applications of Computational Fludi Mechanics 70 81 2014
- Margot X. , Hoyas S. , Gil A. , and Patouna S. Numerical modelling of cavitation: Validation and parametric studies Engineering Applications of Computational Fluid Mechanics 6 15 24 2012 10.1080/19942060.2012.11015399
- Som S. , Aggarwal S. K. , El-Hannouny E. M. , and Longman D. E. Investigation of nozzle flow and cavitation characteristics in a diesel injector Journal of Engineering for Gas Turbines and Power 132 4 12 2010 10.1115/1.3203146
- 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
- Saha K , Li X Assessment of Cavitation Models for Flows in Diesel Injectors With Single- and Two-Fluid Approaches ASME. J. Eng. Gas Turbines Power 2015 138 1 011504 011504-11 10.1115/1.4031224
- Hickel S. , Mihatsch M. , and Schmidt S. J. Implicit large eddy simulation of cavitation in micro channel flows Proceedings of WIMRC 3rd International Cavitation Forum University of Warwick, UK 2011
- Egerer C. P. , Hickel S. , Schmidt S. J. , and Adams N. A. Large-eddy simulation of turbulent cavitating flow in a micro channel Phys. Fluids 26 8 085102 2014 10.1063/1.4891325
- ÖRLEY F. , TRUMMLER T. and HICKEL S. et al. Large-eddy simulation of cavitating nozzle flow and primary jet break-up Physics of Fluids 2015 27 8 086101 10.1063/1.4928701
- Wallis G.B. One-dimensional two-phase flow McGraw-Hill New York 1969 10.1002/aic.690160603
- Andriotis , A. , Gavaises , M. & Arcoumanis , C. 2008 Vortex flow and cavitation in diesel injector nozzles Journal of Fluid Mechanics 610 195 215 10.1017/S0022112008002668
- Ducoin A. , Huang B. , and Young Y.L. Numerical modeling of unsteady cavitating flows around a stationary hydrofoil International Journal of Rotating Machinery 2012 2012 10.1155/2012/215678
- Yuan W. , Sauer J. , and Schnerr G.H. Modeling and computation of unsteady cavitation flows in injection nozzles Mecanique et Industries 2 5 383 394 2001