Modeling of Flame Propagation in Spark Ignition Engines
Author : Johan Wallesten
Publisher :
Page : pages
File Size : 49,64 MB
Release : 2003
Category :
ISBN : 9789172913677
Author : Johan Wallesten
Publisher :
Page : pages
File Size : 49,64 MB
Release : 2003
Category :
ISBN : 9789172913677
Author : P. A. Lakshminarayanan
Publisher : Springer Nature
Page : 678 pages
File Size : 29,62 MB
Release :
Category :
ISBN : 9819706297
Author : Changyou Chen
Publisher :
Page : 22 pages
File Size : 33,26 MB
Release : 1992
Category : Combustion
ISBN :
Author : James N. Mattair
Publisher : Springer
Page : 624 pages
File Size : 44,35 MB
Release : 1980
Category : Technology & Engineering
ISBN :
Author : Xiaowei Zhao
Publisher :
Page : 17 pages
File Size : 31,10 MB
Release : 1993
Category : Combustion chambers
ISBN :
Author : Linda Maria Beck
Publisher : Logos Verlag Berlin
Page : 0 pages
File Size : 23,49 MB
Release : 2013
Category :
ISBN : 9783832534264
The virtual development of future Spark Ignition (SI) engine combustion processes in three-dimensional Computational Fluid Dynamics (3D-CFD) demands for the integration of detailed chemistry, enabling - additionally to the 3D-CFD modelling of flow and mixture formation - the prediction of fuel-dependent SI engine combustion in all of its complexity. This work presents an approach, which constitutes a coupled solution for flame propagation, auto-ignition, and emission formation modelling incorporating detailed chemistry, while exhibiting low computational costs. For modelling the regular flame propagation, a laminar flamelet approach, the G-equation is used. Auto-ignition phenomena are addressed using an integrated flamelet approach, which bases on the tabulation of fuel-dependent reaction kinetics. By introducing a progress variable for the auto-ignition - the Ignition Progress Variable (IPV) - detailed chemistry is integrated in 3D-CFD. The modelling of emission formation bases on an interactively coupled flamelet approach, the Transient Interactive Flamelet (TIF) model. The functionality of the combined approach to model the variety of SI engine combustion phenomena is proved first in terms of fundamentals and standalone sub-model functionality studies by introducing a simplified test case, which represents an adiabatic pressure vessel without moving meshes. Following the basic functionality studies, the sub-model functionalities are investigated and validated in adequate engine test cases. It is shown, that the approach allows to detect locally occurring auto-ignition phenomena in the combustion chamber, and to model their interaction with regular flame propagation. Moreover, the approach enables the prediction of emission formation on cell level.
Author :
Publisher :
Page : 46 pages
File Size : 25,50 MB
Release : 1999
Category :
ISBN :
Author : Dominik Suckart
Publisher : Cuvillier Verlag
Page : 178 pages
File Size : 24,25 MB
Release : 2019-01-03
Category : Technology & Engineering
ISBN : 3736989245
The optimization of combustion in reciprocating engines necessitates an in-depth understanding of the underlying processes as well as accurate and comprehensive physical models. In this respect, the current knowledge on the last stage of combustion in which the flame interacts with the combustion chamber walls is limited. Hence, the objective of this book is to improve the understanding of flame-wall interaction and its modelling. Using a comprehensive analysis of the existing literature on flame-wall interactions as a starting point, the quenching process in a direct-injection spark-ignition engine is investigated via a combination of highly resolved wall heat flux measurements and extensive numerical simulations in order to gain insight into the underlying physical processes. Building on the results, a consistent modelling approach is systematically derived based on the physics of flame quenching and post-flame oxidation. The resulting flame-wall interaction model is based on the G-equation combustion model and incorporates the effects of flame quenching and near-wall turbulence. Finally, the model is applied to simulate combustion in a turbulent channel flow as well as in spark-ignition engines. The results are highlighting the importance of flame-wall interactions for premixed combustion processes in engines and their prediction via simulation.
Author : C. BORGNAKKE, P. PUZINAUSKAS, Y. XIAO
Publisher :
Page : 74 pages
File Size : 48,2 MB
Release : 1986
Category :
ISBN :
Author : F. D. McCuiston (Jr.)
Publisher :
Page : 22 pages
File Size : 36,40 MB
Release : 1977
Category : Flame propagation
ISBN :