Accession Number:

ADP012103

Title:

Chemical Kinetics and Aerodynamics of Ignition

Descriptive Note:

Corporate Author:

PRINCETON UNIV NJ

Personal Author(s):

Report Date:

2001-06-19

Pagination or Media Count:

4.0

Abstract:

This program investigates ignition of nonhomogenous systems, such as those found in practical combustion devices, by looking at ignition in a counterflow. During the reporting period, major effort was expanded on ignition in a nonpremixed turbulent counterflow where a hot air jet ignites an ambient temperature fuel jet. Specifically, the non-reacting turbulent flow was first investigated experimentally to provide data in support of other ignition and turbulence modeling studies. Subsequently, experiments were conducted to determine the ignition temperatures over a range of fuel concentrations, pressures, and strain rates. Preliminary modeling of turbulent ignition was also accomplished by first solving for the flow field using a Reynolds stress model and then solving for the chemistry by using a joint scalar PDF equation and Monte Carlo techniques. This two step approach is possible because of the small amount of heat release prior to ignition.

Subject Categories:

  • Physical Chemistry
  • Fluid Mechanics
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE