Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Atomization and Sprays
IF: 1.262 5-Year IF: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Print: 1044-5110
ISSN Online: 1936-2684

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

Atomization and Sprays

DOI: 10.1615/AtomizSpr.v12.i123.100
pages 187-208

THE SPRAY-INDUCED FLOW AND ITS EFFECT ON THE TURBULENT CHARACTERISTIC COMBUSTION TIME IN Dl DIESEL ENGINES

Franz X. Tanner
Department of Mathematical Sciences, Michigan Technological University, Houghton, MI 49931, USA
Rolf D. Reitz
Engine Research Center, University of Wisconsin-Madison, Rm 1018A, 1500 Engineering Drive, Madison, Wisconsin 53706, USA

ABSTRACT

In direct-injection diesel engines the combustion process is strongly influenced by the turbulence of the spray-induced flow. This flow is transient in nature and, therefore, the equilibrium-based k-e-type turbulence models yield inaccurate predictions of the turbulence mixing time scales. This requires adjustments of the turbulence characteristic combustion time by means of the coefficient CM, in order to match experimental cylinder pressures of different engines. These adjustments are explained in terms of nonequilibrium turbulence behavior of the spray-induced flow. A relation between the spatially averaged equilibrium and nonequilibrium turbulence time scales is derived which leads to a scaling law between the different engines. In particular, the value of CM for one engine can be obtained from the optimum CM of another engine, provided the turbulence determining integral length scales are known. This scaling behavior has been demonstrated for four substantially different engines by comparing the tuned values of CM with the computed scaling factors, and favorable agreement has been obtained.


Articles with similar content:

EFFECT OF HIGH INJECTION PRESSURES AND AMBIENT GAS PROPERTIES OVER THE MACROSCOPIC CHARACTERISTICS OF THE DIESEL SPRAY ON MULTI-HOLE NOZZLES
Atomization and Sprays, Vol.28, 2018, issue 12
Raul Payri, Tomas Montiel, Jhoan S. Giraldo, Pedro Marti-Aldaravi
SOME EXACT SOLUTIONS OF COUPLE STRESS FLUIDS
Computational Thermal Sciences: An International Journal, Vol.3, 2011, issue 2
Akhtar Hussain, Abdul Majeed Siddiqui, S. Islam, Murad Ullah
STATIONARY STABILITY OF TWO LIQUID LAYERS COATING BOTH SIDES OF A THICK WALL UNDER THE SMALL BIOT NUMBERS APPROXIMATION
Interfacial Phenomena and Heat Transfer, Vol.5, 2017, issue 1
Luis Antonio Dávalos-Orozco
DIRECT NUMERICAL SIMULATION OF FLOW SEPARATION BEHIND A ROUNDED LEADING EDGE: STUDY OF CURVATURE EFFECTS
TSFP DIGITAL LIBRARY ONLINE, Vol.6, 2009, issue
Eric Lamballais, Jorge Hugo Silvestrini, Sylvain Laizet
KINETIC AND MOLECULAR DYNAMICS SIMULATIONS OF N-DODECANE DROPLET HEATING AND EVAPORATION
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Jian-Fei Xie, Bing-Yang Cao, Sergei S. Sazhin, Irina N. Shishkova