Accession Number : ADA422646


Title :   Interpreting Shock Tube Ignition Data


Corporate Author : STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Davidson, D. F. ; Hanson, R. K.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA422646


Report Date : OCT 2003


Pagination or Media Count : 24


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.


Descriptors :   *IGNITION, BOUNDARY LAYER, IMPURITIES, GASES, ALKANES, COMBUSTION, FUELS, KINETICS, SHOCK TUBES, AUTOIGNITION, HEPTANES.


Subject Categories : COMBUSTION AND IGNITION


Distribution Statement : APPROVED FOR PUBLIC RELEASE