Objective of the work is to present a newly developed solver for DNS of chemically reacting flows, which can be used to analyze interactions between the turbulent flow and the chemical kinetics in depth. The DNS solver has been implemented into the open source CFD program OpenFOAM and is based on a coupling interface to the thermo-chemical libraries of Cantera. Central core of the solver is the numerical solution of the exact balance equations for total mass, momentum, energy and species masses. The thermodynamic state in terms of pressure, temperature and species compositions, used as input for the Cantera package, which returns the necessary transport properties and reaction rates needed in the governing equations. Validation tests of the solver with respect to the implemented reaction rates and the molecular fluxes for species mass, momentum and energy, have been successfully performed by means of a premixed flat flame. In order to verify the capability of the DNS solver for complex cases, it has been applied to simulate the propagation of a turbulent flame front in 3D. The results have been proved to be promising. At last, DNS of a moderately turbulent jet flame is presented, comparison of the DNS solution with the measurement showed a good agreement.
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