Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.262 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

Volumes:
Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v20.i1.60
pages 71-83

MODELING SUBGRID-SCALE MIXING OF VAPOR IN DIESEL SPRAYS USING JET THEORY

Neerav Abani
Reacting Gas Dynamics Laboratory
Rolf D. Reitz
Engine Research Center, University of Wisconsin-Madison, Rm 1018A, 1500 Engineering Drive, Madison, Wisconsin 53706, USA

SINOPSIS

It is widely known that mixing in reacting sprays is an important factor in the determination of the flame lift-off length, which is the location where the flame stabilizes. These details can be captured with computational techniques using computational fluid dynamics with a very fine mesh resolution. Use of a coarse resolution overpredicts mixing due to large numerical diffusion and thus reduces the predicted lift-off length. Even though a recently developed gas jet spray model improves the prediction of the spray structure with coarse mesh resolution, predictions of vapor mixing in evaporating sprays are still mesh-dependent. In this study, a subgrid-scale model based on classical jet theory is presented, where the vapor-air mixing is modeled with a combined Lagrangian and Eulerian approach. The vapor is transported as a Lagrangian particle consistent with jet mixing and transport theory until the jet mixing is resolved by the mesh scale. In this way, the results show improved predictions of vapor tip penetration and flame lift-off length using coarse-mesh resolutions. The new model offers a potential tool for investigating reacting sprays using coarser mesh resolution to save computational time for complete cycle simulations of internal combustion diesel engines.


Articles with similar content:

CONTINUOUS HYBRID NON-ZONAL RANS/LES SIMULATIONS OF TURBULENT ROTATING FLOWS USING THE PITM METHOD
TSFP DIGITAL LIBRARY ONLINE, Vol.7, 2011, issue
Bruno Chaouat
SCALE-RESOLVING SIMULATIONS OF THE FLOW IN INTERNAL COMBUSTION ENGINES
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.3, 2018, issue
Sinisa Krajnovic, Zoran N. Pavlovic, Branislav Basara
LARGE EDDY SIMULATION OF A TURBULENT NON-PREMIXED FLAME
TSFP DIGITAL LIBRARY ONLINE, Vol.3, 2003, issue
Marco Kupiainen, Christer Fureby
A COMPARISON OF DIESEL SPRAYS CFD MODELING APPROACHES: DDM VERSUS Σ-Y EULERIAN ATOMIZATION MODEL
Atomization and Sprays, Vol.26, 2016, issue 7
Jose M. Desantes, Jose M. Pastor, Adrian Pandal, Jose M. Garcia-Oliver
Development of a Diesel Spray Atomization Model Considering Nozzle Flow Characteristics
International Journal of Fluid Mechanics Research, Vol.24, 1997, issue 4-6
Kang Y. Huh, Eunju Lee, Jaye Koo