COMBUSTION MODELING IN A MODEL COMBUSTOR
The flow-field of a propane-air diffusion flame combustor with interior and exterior conjugate heat transfers was numerically studied. Results obtained from four combustion models, combined with the renormalization group (RNG) k-ε turbulence model,discrete ordinates radiation model and enhanced wall treatment are presented and discussed. The results are compared with a comprehensive database obtained from a series of experimental measurements. The flow patterns and the recirculation zone length in the combustion chamber are accurately predicted, and the mean axial velocities are in fairly good agreement with the experimental data, particularly at downstream sections for all four combustion models. The mean temperature profiles are captured fairly well by the eddy dissipation (EDS), probability density function (PDF), and laminar flamelet combustion models.However, the EDS-finite-rate combustion model fails to provide an acceptable temperature field. In general, the flamelet model illustrates little superiority over the PDF model, and to some extent the PDF model shows better performance than the EDS model.
L.Y.Jiang I.Campbell K.Su
Institute for Aerospace Research, National Research Council Canada Ottawa, ON, K1A 0R6, Canada Department of Mechanical, Automotive, and Materials Engineering, University of Windsor Windsor, ON,
国际会议
昆明
英文
127-134
2006-09-18（万方平台首次上网日期，不代表论文的发表时间）