Measurements and large eddy simulations of turbulent premixed flame kernel growth

  title={Measurements and large eddy simulations of turbulent premixed flame kernel growth},
  author={I. K. Nwagwe and Henry G. Weller and Gavin R. Tabor and A. D. Gosman and Malcolm Lawes and C. G. W. Sheppard and Robert M. Wooley},
Simulation of Spherically Expanding Turbulent Premixed Flames
Statistically spherical expanding turbulent premixed flames are computed using an unsteady Reynolds-averaged Navier–Stokes (URANS) approach. Mean reaction rate is closed using strained and unstrained
Effects of large-scale stretching of premixed turbulent flames on flame speed are discussed and an extension of the classical Markstein number concept is proposed to parameterize flame speed
Testing Premixed Turbulent Combustion Models by Studying Flame Dynamics
First, the following universal feature of premixed turbulent flame dynamics is highlighted: During an early stage of flame development, the burning velocity grows much faster than the mean flame


Turbulent burning velocities: a general correlation in terms of straining rates
All known experimental values of turbulent burning velocity have been scrutinized. These number 1650, a significant proportion of which at the higher turbulent Reynolds numbers we measured in a
Combustion in a turbulent mixing layer formed at a rearward-facing step
A premixed propane/air flame was stabilized in a turbulent mixing layer formed at a rearward-facing step. The mean and rms averages of the turbulent velocity flow fie Id were determined by laser
Visualisation of results from LES of combustion
We examine the role of visualisation in the context of LES simulations of premixed turbulent combustion. The physical processes involved in premixed turbulent combustion are extremely complex, and
Statistical theory for compressible turbulent shear flows, with the application to subgrid modeling
A statistical theory for compressible turbulent shear flows subject to buoyancy effects is developed. Important correlation functions in compressible shear flows are calculated with the aid of a
Error analysis and estimation for the finite volume method with applications to fluid flows
An automatic error-controlled adaptive mesh refinement algorithm is set up in order to automatically produce a solution of pre-determined accuracy, based on a new stabilised and bounded second-order differencing scheme proposed.