Numerical simulation of turbulent jet flow and combustion

The work applies the k - epsilon turbulent model, with pressure boundary co ndition for the entrainment atmosphere surface, to calculate the steady fre e jet flow. It is solved by SIMPLE method using multi-grid solver to accele rate the computational speed. Based on the fulfillment of the above isother mal jet flow, combusting jet hows of diffusion flame and partial premixed f lame are simulated, using the assumption of fast chemical reaction and Eddy -Dissipation-Concept (EDC) model, respectively. The numerical results are c ompared with experimental and theoretical results. The numerical results of isothermal jet and diffusion jet flame agree well with tests by Panchapake san and Lumley, Lockwood and Moneib. It is found that the EDC model has som e errors in modeling partial premixed jet flames. (C) 1999 Elsevier Science Ltd. All rights reserved.