Interpreting Shock Tube Ignition Data

Abstract

Chemical kinetic modelers make extensive use of shock tube ignition data in the development and validation of combustion reaction mechanisms. These data come from measurements using a range of diagnostics and a variety of shock tubes, fuels, and initial conditions. With the wide selection of data available, it is useful to realize that not all of the data are of all the same type or quality, nor are all the data suitable for simple, direct comparison with the predictions of reaction mechanisms. We present here a discussion of some guidelines for the comparison of shock tube ignition time data with reaction mechanism modeling. Areas discussed include: definitions of ignition time; ignition time correlations (with examples taken from recent n-heptane and iso-octane measurements); shock tube constant-volume behavior; shock tube diameter and boundary layer effects; carrier gas and impurity effects; and future needs and challenges in shock tube research.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2003
Accession Number
ADA422646

Entities

People

  • D. F. Davidson
  • Ronald Kenneth Hanson

Organizations

  • Stanford University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Boundary Layer
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemistry
  • Combustion
  • Combustion Products
  • Data Sets
  • Heat Of Activation
  • Ignition
  • Internal Combustion Engines
  • Measurement
  • Mechanical Engineering
  • Pressure Measurement
  • Reaction Mechanisms
  • Shock Tubes
  • Shock Waves

Readers

  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation