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Eighth International Symposium on Turbulence and Shear Flow Phenomena
August, 28-30, 2013, Poitiers, Futuroscope, France

DOI: 10.1615/TSFP8

TURBULENT TRANSPORTS MODELING IN A HYDROGEN-AIR DIFFUSION FLAME

pages 1-6
DOI: 10.1615/TSFP8.170
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RESUMO

Turbulent transports in hydrogen-air flame are investigated by introducing relevant scalar variables which allow to identify and treat separately density effects induced by both mixing and reactive processes. The algebraic models proposed for the turbulent scalar flux and the turbulent kinetic energy allow to recover and generalise well-known previously established relations and highlight the possible occurrence of counter-gradient turbulent diffusion. The calculation of a practical turbulent diffusion hydrogen-air flame is also performed and exhibits a strong production of turbulence near stoichiometric conditions.

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