Advanced

Stochastic model for the investigation of the effect of inhomogeneities on engine knock

Gogan, Adina LU ; Sundén, Bengt LU ; Lehtiniemi, Harry LU and Mauss, Fabian LU (2004) Fall Technical Conference of the ASME International Combustion Engine Division In Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division p.399-408
Abstract
A stochastic model based on a probability density function (PDF) approach was developed for the investigation of spark ignition (SI) engine knock conditions. The model is based on a two zone model, where the burned and unburned gases are described as stochastic reactors, and the movement of the turbulent flame front is expressed with a Wiebe function. Using a stochastic particle ensemble to represent the PDF of the scalar variables associated with the burned and unburned gases, allows the consideration of inhomogeneities in gas composition and temperature, as well as turbulence mixing effects. The turbulent mixing is described with the interaction by exchange with the mean model. A stochastic jump process is used for modeling the heat... (More)
A stochastic model based on a probability density function (PDF) approach was developed for the investigation of spark ignition (SI) engine knock conditions. The model is based on a two zone model, where the burned and unburned gases are described as stochastic reactors, and the movement of the turbulent flame front is expressed with a Wiebe function. Using a stochastic particle ensemble to represent the PDF of the scalar variables associated with the burned and unburned gases, allows the consideration of inhomogeneities in gas composition and temperature, as well as turbulence mixing effects. The turbulent mixing is described with the interaction by exchange with the mean model. A stochastic jump process is used for modeling the heat transfer, hence accounting for the temperature fluctuations and the fluid wall interaction. Detailed chemistry is used in the calculations. A parameter study investigates the effects of end gas inhomogeneities related to residual gas composition and temperature, on the autoignition process. adina.gogan@vok.lth.se. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Stochastic reactors, Engine knock, Stochastic model, Turbulent mixing
in
Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division
pages
399 - 408
publisher
American Society Of Mechanical Engineers (ASME)
conference name
Fall Technical Conference of the ASME International Combustion Engine Division
external identifiers
  • scopus:14044250868
ISBN
0791837467
language
English
LU publication?
yes
id
f3f59006-66dc-4c31-8360-a6feaa5f48f8 (old id 613969)
date added to LUP
2007-11-26 18:48:54
date last changed
2017-01-01 08:05:19
@inproceedings{f3f59006-66dc-4c31-8360-a6feaa5f48f8,
  abstract     = {A stochastic model based on a probability density function (PDF) approach was developed for the investigation of spark ignition (SI) engine knock conditions. The model is based on a two zone model, where the burned and unburned gases are described as stochastic reactors, and the movement of the turbulent flame front is expressed with a Wiebe function. Using a stochastic particle ensemble to represent the PDF of the scalar variables associated with the burned and unburned gases, allows the consideration of inhomogeneities in gas composition and temperature, as well as turbulence mixing effects. The turbulent mixing is described with the interaction by exchange with the mean model. A stochastic jump process is used for modeling the heat transfer, hence accounting for the temperature fluctuations and the fluid wall interaction. Detailed chemistry is used in the calculations. A parameter study investigates the effects of end gas inhomogeneities related to residual gas composition and temperature, on the autoignition process. adina.gogan@vok.lth.se.},
  author       = {Gogan, Adina and Sundén, Bengt and Lehtiniemi, Harry and Mauss, Fabian},
  booktitle    = {Proceedings of the 2004 Fall Technical Conference of the ASME Internal Combustion Engine Division},
  isbn         = {0791837467},
  keyword      = {Stochastic reactors,Engine knock,Stochastic model,Turbulent mixing},
  language     = {eng},
  pages        = {399--408},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {Stochastic model for the investigation of the effect of inhomogeneities on engine knock},
  year         = {2004},
}