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Showing 1 to 7 of 7 for “"flame curvature"”.
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Numerical investigation of effects of pressure and chemistry on characteristics of turbulent premixed flames
Turbulent premixed flames are used in many energy conversion and propulsion devices. The efficiency and performance of these devices are affected by operating conditions, which also affect the highly nonlinear turbulence-chemistry interactions (TCIs). Previous fundamental studies characterize TCIs …
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Fundamental studies of premixed combustion
… a fundamental study of spherical premixed flame propagation,originating at a point under both laminar and turbulent propagation. Schlieren cine photography has been employed to study laminar flame propagation, while planar mie scattering (PMS) has elucidated important aspects of turbulent …
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Laminar burning velocity measurements of stabilized aluminum dust flames
The laminar burning velocity of a stabilized dust flame is experimentally investigated in the present work. The dust used was aluminum powder with an average particle diameter of approximately 5 microns. Dust flames, in comparison to gas flames, are thicker and brighter, may be influenced by …
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Mathematical modelling of premixed laminar methane-air flames
… laminar, stationary, axisymmetric methane-air flames, and successfully validated with non-intrusive Coherent Anti-Stokes Raman Spectroscopy (CARS) temperature measurements. With the first model, the heat releaser ate model, volumetric heat release rate was generalised from one-dimensional …
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Flame Surface Density Measurements and Curvature Statistics for Turbulent Premixed Bunsen Flames
… planar laser induced fluorescence (PLIF). Flame topography measurements in terms of flame surface density and curvature were calculated based on the flame front detected by the CH PLIF signal. The goal of this work was to investigate turbulent flames with extremely high turbulence intensity …
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Propagation of large scale premixed turbulent flames
… the diffusion length scale representing the flame thickness and the hydrodynamic length scale associated with the dimensions of the combustion chamber. It treats the flame as a surface of density discontinuity that separates the burned gas from the fresh combustible mixture and propagates …
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Development of a multi-scale projection method with immersed boundaries for chemically reactive flows and its application to examine flame stabilization and blow-off mechanisms
… tool to investigate the underlying mechanisms of flame stabilization and blow-off in canonical configurations. A second-order immersed boundary method for reacting flow simulations near heat conducting, grid conforming, solid object has been developed. The method is coupled with a block-structured …