Flow and Temperature Distribution in an Experimental Engine: LES Studies and Thermographic Imaging
Joelsson, Tobias LU ; Yu, Rixin LU ; Bai, Xue-Song LU ; Takada, Noriyuki LU ; Sakata, Ischiro ; Yanagihara, Hiromichi ; Lindén, Johannes LU
; Richter, Mattias
LU
; Aldén, Marcus
LU
and Johansson, Bengt
LU
(2010)
In SAE technical paper series
- Abstract
- Temperature stratification plays an important role in HCCI
combustion. The onsets of auto-ignition and combustion
duration are sensitive to the temperature field in the engine
cylinder. Numerical simulations of HCCI engine combustion
are affected by the use of wall boundary conditions,
especially the temperature condition at the cylinder and
piston walls. This paper reports on numerical studies and
experiments of the temperature field in an optical
experimental engine in motored run conditions aiming at
improved understanding of the evolution of temperature
stratification in the cylinder. The simulations were based on
Large-Eddy-Simulation... (More) - Temperature stratification plays an important role in HCCI
combustion. The onsets of auto-ignition and combustion
duration are sensitive to the temperature field in the engine
cylinder. Numerical simulations of HCCI engine combustion
are affected by the use of wall boundary conditions,
especially the temperature condition at the cylinder and
piston walls. This paper reports on numerical studies and
experiments of the temperature field in an optical
experimental engine in motored run conditions aiming at
improved understanding of the evolution of temperature
stratification in the cylinder. The simulations were based on
Large-Eddy-Simulation approach which resolves the
unsteady energetic large eddy and large scale swirl and
tumble structures. Two dimensional temperature experiments
were carried out using laser induced phosphorescence with
thermographic phosphors seeded to the gas in the cylinder.
The results revealed different mechanisms for the
development of temperature stratification: intake gas and
residual gas mixing, heat transfer in the wall boundary layer,
compression of the charge, and large scale flow transport.
The sensitivity of LES results to different wall boundary
conditions and inflow conditions was analyzed. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1887357
- author
- Joelsson, Tobias
LU
; Yu, Rixin
LU
; Bai, Xue-Song
LU
; Takada, Noriyuki
LU
; Sakata, Ischiro
; Yanagihara, Hiromichi
; Lindén, Johannes
LU
; Richter, Mattias
LU
; Aldén, Marcus
LU
and Johansson, Bengt
LU
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Large Eddy Simulation, HCCI, CFD
- in
- SAE technical paper series
- publisher
- Society of Automotive Engineers
- external identifiers
-
- scopus:85072357314
- ISSN
- 0148-7191
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- additional info
- SAE paper number: 2010-01-2237
- id
- 6ebd7300-2964-464c-8491-469bd21967a8 (old id 1887357)
- alternative location
- http://papers.sae.org/2010-01-2237
- date added to LUP
- 2016-04-01 14:12:41
- date last changed
- 2022-01-27 23:23:26
@article{6ebd7300-2964-464c-8491-469bd21967a8,
abstract = {{Temperature stratification plays an important role in HCCI<br/><br>
combustion. The onsets of auto-ignition and combustion<br/><br>
duration are sensitive to the temperature field in the engine<br/><br>
cylinder. Numerical simulations of HCCI engine combustion<br/><br>
are affected by the use of wall boundary conditions,<br/><br>
especially the temperature condition at the cylinder and<br/><br>
piston walls. This paper reports on numerical studies and<br/><br>
experiments of the temperature field in an optical<br/><br>
experimental engine in motored run conditions aiming at<br/><br>
improved understanding of the evolution of temperature<br/><br>
stratification in the cylinder. The simulations were based on<br/><br>
Large-Eddy-Simulation approach which resolves the<br/><br>
unsteady energetic large eddy and large scale swirl and<br/><br>
tumble structures. Two dimensional temperature experiments<br/><br>
were carried out using laser induced phosphorescence with<br/><br>
thermographic phosphors seeded to the gas in the cylinder.<br/><br>
The results revealed different mechanisms for the<br/><br>
development of temperature stratification: intake gas and<br/><br>
residual gas mixing, heat transfer in the wall boundary layer,<br/><br>
compression of the charge, and large scale flow transport.<br/><br>
The sensitivity of LES results to different wall boundary<br/><br>
conditions and inflow conditions was analyzed.}},
author = {{Joelsson, Tobias and Yu, Rixin and Bai, Xue-Song and Takada, Noriyuki and Sakata, Ischiro and Yanagihara, Hiromichi and Lindén, Johannes and Richter, Mattias and Aldén, Marcus and Johansson, Bengt}},
issn = {{0148-7191}},
keywords = {{Large Eddy Simulation; HCCI; CFD}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
series = {{SAE technical paper series}},
title = {{Flow and Temperature Distribution in an Experimental Engine: LES Studies and Thermographic Imaging}},
url = {{http://papers.sae.org/2010-01-2237}},
year = {{2010}},
}