Modeling of a turbulent ethylene/air jet flame using hybrid finite volume/monte carlo methods

Ranjan S. Mehta, Anquan Wang, Michael F. Modest, Daniel C. Haworth

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Detailed modeling of an experimental ethylene/air jet flame is undertaken using the joint composition probability distribution function (PDF) method for gas-phase kinetics coupled with detailed models for soot formation and radiation from the flames. The gas-phase kinetics is modeled using a reduced mechanism for ethylene consisting of 33 species and 205 elementary reactions. The soot formation is modeled using the method of moments with a simplified nucleation mechanism and modified surface-HACA (Hydrogen abstraction acetylene addition) mechanism for surface growth and oxidation. The soot formation is coupled directly with a transported PDF approach to account for turbulence-chemistry interactions in gas-phase chemistry and the highly nonlinear soot formation processes. Radiation from soot and combustion gases is accounted for by using a photon Monte Carlo method coupled with nongray properties for soot and gases. Soot particles are assumed to be small, and scattering effects are neglected. Turbulence-radiation interactions are captured accurately. Simulation results are compared to experimental data, and also with less CPU-intensive radiation calculations using the optically thin approximation.

Original languageEnglish (US)
Pages (from-to)37-53
Number of pages17
JournalComputational Thermal Sciences
Volume1
Issue number1
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Surfaces and Interfaces
  • Fluid Flow and Transfer Processes
  • Computational Mathematics

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