Reacting turbulent flow produced by two concentric tubes of finite wall thickness

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A numerical model, including a novel numerical procedure, was developed for calculating the heat and mass transfer in reacting turbulent flow produced by two concentric tubes separated by a wall of finite thickness. Equations of motion, energy, and mass, as well as turbulence (described by the k-epsilon model), were expressed in a two-dimensional parabolic form in cylindrical coordinates, assuming steady-state, axial symmetry, and a predominant direction of flow. A combination of the x-r and the x-omega coordinate systems (where r and x are the radial and axial coordinates, respectively, and omega is the normalized stream function) was applied. A hydrogen/air flame was studied assuming immediate local equilibrium. The effects of wall thickness, flow velocities, and initial chemical composition are investigated.
Original languageEnglish
Title of host publicationProceedings of the Fourth International Conference, Swansea, Wales, 1985
StatePublished - 1985


  • Combustible Flow
  • Flame Propagation
  • Flow Equations
  • Heat Transfer
  • Mass Transfer
  • Turbulent Flow
  • Finite Difference Theory
  • Flow Distribution
  • Flow Velocity
  • Hydrogen
  • K-Epsilon Turbulence Model
  • Wall Flow


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