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Multidimensional Numerical Simulations of Knocking Combustion in a Cooperative Fuel Research Engine

Journal Article · · Journal of Energy Resources Technology
DOI:https://doi.org/10.1115/1.4040063· OSTI ID:1463679
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Energy Systems Division,Argonne National Laboratory,9700 S Cass Avenue,Lemont, IL 60439e-mail: pal@anl.gov
  2. Department of Mechanical Engineering,University of Connecticut,Storrs, CT 06269e-mail: yunchao.wu@uconn.edu
  3. Department of Mechanical Engineering,University of Connecticut,Storrs, CT 06269e-mail: tianfeng.lu@uconn.edu
  4. Energy Systems Division,Argonne National Laboratory,9700 S Cass Avenue,Lemont, IL 60439e-mail: ssom@anl.gov
  5. Convergent Science Inc.,6400 Enterprise Lane,Madison, WI 53719e-mail: yeechee.see@convergecfd.com
  6. Convergent Science Inc.,6400 Enterprise Lane,Madison, WI 53719e-mail: alexandraloiero@gmail.com
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A numerical approach was developed based on multidimensional computational fluid dynamics (CFD) to predict knocking combustion in a cooperative fuel research (CFR) engine. G-equation model was employed to track the turbulent flame front and a multizone model was used to capture auto-ignition in the end-gas. Furthermore, a novel methodology was developed wherein a lookup table generated from a chemical kinetic mechanism could be employed to provide laminar flame speed as an input to the Gequation model, instead of using empirical correlations. To account for fuel chemistry effects accurately and lower the computational cost, a compact 121-species primary reference fuel (PRF) skeletal mechanism was developed from a detailed gasoline surrogate mechanism using the directed relation graph (DRG) assisted sensitivity analysis (DRGASA) reduction technique. Extensive validation of the skeletal mechanism was performed against experimental data available from the literature on both homogeneous ignition delay and laminar flame speed. The skeletal mechanism was used to generate lookup tables for laminar flame speed as a function of pressure, temperature, and equivalence ratio. The numerical model incorporating the skeletal mechanism was employed to perform simulations under research octane number (RON) and motor octane number (MON) conditions for two different PRFs. Parametric tests were conducted at different compression ratios (CR) and the predicted values of critical CR, delineating the boundary between “no knock” and “knock,” were found to be in good agreement with available experimental data. The virtual CFR engine model was, therefore, demonstrated to be capable of adequately capturing the sensitivity of knock propensity to fuel chemistry.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1463679
Journal Information:
Journal of Energy Resources Technology, Vol. 140, Issue 10; ISSN 0195-0738
Publisher:
ASME
Country of Publication:
United States
Language:
English

References (42)

Strategies for mechanism reduction for large hydrocarbons: n-heptane July 2008
The outlook for fuels for internal combustion engines March 2014
Thermal boundary layer thickness in the cylinder of a spark-ignition engine October 1984
Laminar flame speeds of primary reference fuels and reformer gas mixtures November 2004
LES prediction and analysis of knocking combustion in a spark ignition engine January 2015
Kinetic modeling of gasoline surrogate components and mixtures under engine conditions January 2011
A temperature wall function formulation for variable-density turbulent flows with application to engine convective heat transfer modeling February 1997
Chemical kinetics of octane sensitivity in a spark-ignition engine January 2017
Assessment of flamelet versus multi-zone combustion modeling approaches for stratified-charge compression ignition engines February 2015
Chemical Kinetic Insights into the Octane Number and Octane Sensitivity of Gasoline Surrogate Mixtures February 2017
Detailed Chemistry Promotes Understanding of Octane Numbers and Gasoline Sensitivity November 2006
Computational Fluid Dynamics Simulation of Gasoline Compression Ignition May 2015
Simulating Flame Lift-Off Characteristics of Diesel and Biodiesel Fuels Using Detailed Chemical-Kinetic Mechanisms and Large Eddy Simulation Turbulence Model August 2012
Turbulence Modeling of Internal Combustion Engines Using RNG κ-ε Models January 1995
A directed relation graph method for mechanism reduction January 2005
A new indicator for knock detection in gas SI engines May 2003
Laminar Flame Speeds of Preheated iso-Octane/O2/N2 and n-Heptane/O2/N2 Mixtures March 2007
A Reduced Mechanism for High-Temperature Oxidation of Biodiesel Surrogates December 2010
Linear time reduction of large kinetic mechanisms with directed relation graph: n-Heptane and iso-octane January 2006
Characteristics of Syngas Auto-ignition at High Pressure and Low Temperature Conditions with Thermal Inhomogeneities January 2015
Fuel Effects on Knock, Heat Release and “CARS” Temperatures in a Spark Ignition Engine December 1995
Local heat flux measurements in a hydrogen and methane spark ignition engine with a thermopile sensor December 2009
Laminar burning velocity of gasolines with addition of ethanol January 2014
Laminar burning velocities of n-heptane, iso-octane, ethanol and their binary and tertiary mixtures August 2011
A Regime Diagram for Autoignition of Homogeneous Reactant Mixtures with Turbulent Velocity and Temperature Fluctuations February 2015
Determination of and Fuel Structure Effects on Laminar Flame Speeds of C 1 to C 8 Hydrocarbons December 1998
LES analysis for auto-ignition induced abnormal combustion based on a downsized SI engine April 2017
Effects of fuel injection parameters on the performance of homogeneous charge compression ignition at low-load conditions April 2015
Computational characterization of ignition regimes in a syngas/air mixture with temperature fluctuations January 2017
Lifecycle optimized ethanol-gasoline blends for turbocharged engines November 2016
A fully coupled computational fluid dynamics and multi-zone model with detailed chemical kinetics for the simulation of premixed charge compression ignition engines October 2005
Flame/Stretch Interactions of Premixed Fuel-Vapor/O/N Flames May 2000
A computational study of syngas auto-ignition characteristics at high-pressure and low-temperature conditions with thermal inhomogeneities July 2015
Burning velocities of mixtures of air with methanol, isooctane, and indolene at high pressure and temperature January 1982
Large-Eddy Simulation of an n-Dodecane Spray Flame Under Different Ambient Oxygen Conditions March 2016
LES study of deflagration to detonation mechanisms in a downsized spark ignition engine July 2015
Experimental counterflow ignition temperatures and reaction mechanisms of 1,3-butadiene January 2007
Developments in internal combustion engines and implications for combustion science and future transport fuels January 2015
Knocking Characteristics of Hydrocarbons December 1948
Impact of fuel molecular structure on auto-ignition behavior – Design rules for future high performance gasolines May 2017
A fast response thermocouple for internal combustion engine surface temperature measurements February 2010
Self-ignition of S.I. engine model fuels: A shock tube investigation at high pressure June 1997

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knock
CFD
CFR engine
G-equation
reduced kinetics
spark ignition