Evaluating the Potential of a Direct-Injection Constant-Volume Combustion Chamber as a Tool to Validate Chemical-Kinetic Models for Liquid Fuels

Chemical-kinetic mechanisms for low-volatility hydrocarbons and alternative fuels are mostly scarce or not validated, primarily due to the lack of a convenient experimental platform to investigate fundamental ignition and combustion behavior for such fuels. This work reports experimental measurement...

Full description

Saved in:
Bibliographic Details
Published in:Combustion science and technology 2017-01, Vol.189 (1), p.1-23
Main Authors: Fisher, Brian T., Allen, James C., Hancock, Russell L., Bittle, Joshua A.
Format: Article
Language:English
Subjects:
Alternative fuels
Autoignition
Chemical engineering
Chemical kinetics
Chemical reactions
Combustion
Combustion chambers
Delay
Equivalence ratio
Fuel technology
Fuels
Heptane
Heptanes
Hydrocarbons
Ignition
Ignition delay
Impingement
Injection
Kinetics
Liquid fuels
Mathematical models
Negative temperature coefficient
Nuclear fuels
Platforms
Reaction kinetics
Volatility
Walls
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Chemical-kinetic mechanisms for low-volatility hydrocarbons and alternative fuels are mostly scarce or not validated, primarily due to the lack of a convenient experimental platform to investigate fundamental ignition and combustion behavior for such fuels. This work reports experimental measurements of ignition delays and related combustion behavior of n-heptane in a direct-injection constant-volume combustion chamber, for pressures ranging from 0.2 MPa to 1.0 MPa and temperatures ranging from approximately 390°C to 500°C while holding the global equivalence ratio constant at 0.62. Results showed clear two-stage ignition and negative temperature coefficient behavior, and data at higher pressures agreed closely with predictions from a perfectly-stirred-reactor model. At lower pressures, impingement of liquid fuel on the chamber wall likely caused experimental data to deviate significantly from model predictions. Overall, this work strongly suggests that this experimental platform can be used to validate chemical kinetics of liquid fuels.
ISSN:0010-2202
1563-521X
DOI:10.1080/00102202.2016.1193015