Large eddy simulation of hydrogen combustion in supersonic flows using an Eulerian stochastic fields method

Research output: Contribution to journalArticlepeer-review

Authors

  • Cheng Gong
  • Mehdi Jangi
  • Xue Song Bai
  • Jian Han Liang
  • Ming Bo Sun

Colleges, School and Institutes

External organisations

  • Lunds Universitet
  • National University of Defense Technology

Abstract

An Eulerian Monte-Carlo approach, the so-called Eulerian stochastic fields (ESF) method is implemented and evaluated for simulation of non-premixed hydrogen/air combustion in supersonic flows. The ESF method is integrated into a compressible flow large eddy simulation (LES) solver, and validated on a supersonic combustor with a strut as flame-holder. Comparison with experimental data and with results from a well-stirred reactor (WSR) model demonstrates the advantage of the LES-ESF method for simulation of local-extinction and re-ignition phenomena. The hydrogen/air flame structure and the stabilization of the combustion process in the supersonic combustor are analysed based on the present LES-ESF method. Oscillation of the recirculation zones is found to be the dominant mechanism for the local-extinction/re-ignition and the flame stabilization under the present condition.

Details

Original languageEnglish
Pages (from-to)1264-1275
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number2
Early online date2 Oct 2016
Publication statusPublished - 12 Jan 2017

Keywords

  • Eulerian stochastic fields, Large eddy simulation, Local-extinction, Re-ignition, Supersonic, Transported probability density function