A quasi-direct numerical simulation solver for compressible reacting flows

摘要

A new quasi-direct numerical simulation (q-DNS) solver named combustionFoam, capable of simulating reacting flows at arbitrary Mach number with a detailed chemical reaction mechanism, has been developed. This solver is implemented based on reactingFoam-solver from OpenFOAM-v7. The main improvements are a mixture-averaged formula transport model and ability to simulate reacting flows at arbitrary Mach number. The transport model is implemented by developing an data exchange interface to couple OpenFOAM (R) with Cantera. To damped nonphysical oscillations near shocks, a hybrid KT/KNP approach derived by Kraposhin et al. [18] is adopted. This solver was validated by two test cases: (1) a low speed steady two dimensional non-premixed counterflow diffusion flame; (2) a supersonic transient one dimensional detonation waves. Comparisons of the results with data from other solvers and literatures are carried out and good agreements are obtained. (C) 2020 Published by Elsevier Ltd.