Chemical Kinetics and Aerodynamics of Ignition
Abstract
The importance of auto- and forced ignition in the operation of practical combustion devices such as the Diesel engine suggests that better understanding and enhanced performance of these devices rely on knowledge of the separate and coupled roles of the complex chemical kinetics and unsteady and turbulent aerodynamics that are present in such systems. This investigation adopted the counterflow configuration, with its well defined flow time, and employed laser-based experimentation, computational simulation with detailed chemistry and transport, turbulent modeling, and analysis with reduced mechanisms in an attempt to achieve a comprehensive understanding of the various controlling processes and parameters. The chemical kinetic portion involved the experimental determination of the ignition temperature as a function of the fuel concentration, system pressure, and flow strain rate for selected hydrocarbons up to C8, and the subsequent modeling and development of detailed, simplified, and reduced kinetic mechanisms governing ignition of these fuels. The aerodynamic portion of the program involved experimental measurement and numerical modeling of the flow field present immediately prior to ignition in a turbulent counterflow, as well as the determination of ignition temperatures as a function of turbulent intensity and the other parameters investigated in laminar flows.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 04, 2001
- Accession Number
- ADA395878
Entities
People
- Chung K. Law
Organizations
- Princeton University