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Large Eddy Simulation of Turbulent Reactive Mixing at High Schmidt and Reynolds Numbers
Author(s) -
Walter Matthias,
Kornev Nikolai,
Hassel Egon
Publication year - 2015
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400371
Subject(s) - micromixing , large eddy simulation , scalar (mathematics) , turbulence , schmidt number , reynolds number , mechanics , jet (fluid) , chemistry , statistical physics , thermodynamics , physics , analytical chemistry (journal) , mathematics , chromatography , geometry
Large eddy simulation is used to investigate the reactive scalar transport in a confined jet reactor at high Reynolds and Schmidt numbers. Numerical simulations are performed for a fast neutralization reaction of acid and base supported by experimental data. Based on detailed planar laser‐induced fluorescence measurements, a simple conditional micromixing model for infinitely fast chemistry is developed and successfully applied to the jet mixer configuration. Results obtained for the reactive scalar transport are in excellent agreement with measurements, whereas established micromixing approaches based on the eddy dissipation model, multi environment model, and presumed probability density function with infinetly fast chemistry models indicate discrepancies in the determination of micromixing rate and product concentration.