Accession Number : ADA263153


Title :   Role of Acoustics in Flame/Vortex Interactions


Descriptive Note : Contractor rept.,


Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA


Personal Author(s) : Jackson, T L ; Macaraeg, Michele G ; Hussaini, M Y


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a263153.pdf


Report Date : Feb 1993


Pagination or Media Count : 37


Abstract : The role of acoustics in flame/vortex interactions is examined via asymptotic analysis and numerical simulation. The model consists of a one-step, irreversible Arrhenius reaction between initially unmixed species occupying adjacent half-planes which are allowed to mix and react by convection and diffusion in the presence of an acoustic field or a time-varying pressure field of small amplitude. The main emphasis is on the influence of the acoustics on the ignition time and flame structure as a function of vortex Reynolds number and initial temperature differences of the reactants.... Ignition, Acoustics, Flame, Vortex.


Descriptors :   *INTERACTIONS , *VORTICES , *FLAMES , *ACOUSTIC FIELDS , MATHEMATICAL MODELS , FUNCTIONS , SIMULATION , STRUCTURES , COMPRESSIBLE FLOW , ACOUSTICS , DIFFUSION , ARRHENIUS EQUATION , REYNOLDS NUMBER , AMPLITUDE , NUMBERS , IGNITION , PRESSURE , TIME , CONVECTION , ACOUSTIC WAVES , TEMPERATURE , MODELS


Subject Categories : Acoustics
      Fluid Mechanics
      Combustion and Ignition


Distribution Statement : APPROVED FOR PUBLIC RELEASE