Abstract
Several turbulence models were analyzed in this paper for the chemically recuperated gas turbine (CRGT) combustor and numerical simulation of the combustor’s flow fields using these turbulence models was carried out with the aid of CFD method and finally the contrastive analysis was made. Realizable k-ε and RNG k-ε turbulence models, PDF combustion model and the SIMPLE algorithm method were adopted in the numerical simulation. Through comparison of key influencing factors of the combustor such as flame length, position of the high temperature zone, wall temperature and evenness of exit temperature field, it could be concluded that the Realizable k-ε turbulence model demonstrates better performance with high quality of convergence precision and evenly distributed parameters that meet the design requirements better.
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