Numerical simulation of turbulent jet flow and combustion

The work applies the κ − ε turbulent model, with pressure boundary condition for the entrainment atmosphere surface, to calculate the steady free jet flow. It is solved by SIMPLE method using multi-grid solver to accelerate the computational speed. Based on the fulfillment of the above isothermal jet flow, combusting jet flows of diffusion flame and partial premixed flame are simulated, using the assumption of fast chemical reaction and Eddy-Dissipation-Concept (EDC) model, respectively. The numerical results are compared with experimental and theoretical results. The numerical results of isothermal jet and diffusion jet flame agree well with tests by Panchapakesan and Lumley, Lockwood and Moneib. It is found that the EDC model has some errors in modeling partial premixed jet flames. © 1999 Elsevier Science Ltd. All rights reserved.