Numerical visualization and residence time determination of turbulent reacting duct flow with mass bleed and a backstep on one wall

摘要

A numerical expeiment was performed to study turbulent reacting duct flows with a backstep and mass bleed on one wall.The time-dependent two-dimensional compressible ocnservation equations wee solved with a subgid-scale turbulene model.the ocmbustion process ocnsidered wwas a one-step,irreversible.and infinitely fast chemical reaction.The numericla mcode used the finite-volume technique,which involved alternating in time second-order,expicit MacCormack's and modified Godunov's shcemes.