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Numerical simulations of buoyant reactive jets with sidewall effects

Research output: Contribution to journalJournal article

Published

  • H P Zhang
  • X Jiang
  • W Wang
  • Y Yang
  • L Xu
  • W C Fan
Journal publication date10/2004
JournalChinese Science Bulletin
Journal number19
Volume49
Number of pages5
Pages2105-2109
Original languageEnglish

Abstract

The near field dynamics of buoyant reactive jets with adjacent sidewalls is investigated by time-dependent three-dimensional direct simulations. The physical problem is a fuel jet issuing vertically into an oxidant ambient environment in a corner configuration with sidewall boundaries. Simulation results are presented for two cases with different jet nozzle geometries: a corner-round reactive jet and a corner-square reactive jet with the same cross-sectional area on the nozzle plane. Buoyancy-induced large vortical structures evolve spatially in the flow field and transition to turbulence occurs downstream. Calculation of the mean flow properties shows that entrainment of the corner-round jet is stronger than that of the corner-square jet due to the stronger vortex deformation in the corner-round case.