NUMERICAL SIMULATION OF METHANE-AIR TURBULENT JET FLAME USING A NEW SECOND-ORDER MOMENT MODEL

【摘要】 <正> A new second-order moment model for turbulent combustion is ap-plied in the simulation of methane-air turbulent jet flame.The predicted resultsare compared with the experimental results and with those predicted using the well-known EBU-Arrhenius model and the original second-order moment model.Thecomparison shows the advantage of the new model that it requires almost the samecomputational storage and time as that of the original second-order moment model,but its modeling results are in better agreement with experiments than those usingother models.Hence,the new second-order moment model is promising in modelingturbulent combustion with NO_x formation with finite reaction rate for engineeringapplication.更多还原

【Abstract】 A new second-order moment model for turbulent combustion is ap- plied in the simulation of methane-air turbulent jet flame.The predicted results are compared with the experimental results and with those predicted using the well- known EBU-Arrhenius model and the original second-order moment model.The comparison shows the advantage of the new model that it requires almost the same computational storage and time as that of the original second-order moment model, but its modeling results are in better agreement with experiments than those using other models.Hence,the new second-order moment model is promising in modeling turbulent combustion with NO_x formation with finite reaction rate for engineering application.更多还原