Numerical analysis for performance of high temperature rise swirl combustors

In order to study the high temperature rise combustor, the designed high temperature rise multi-swirl combustor, center-staged combustor, as well as the existing single annular combustor (SAC, designed fuel/air ratio is 0.027), were analyzed with numerical simulation method. For the condition of design state where fuel/air ratio is 0.037, it is demonstrated that multi-swirl and center-staged device could both reach the ideal combustion criteria, with pattern factors (OTDF) reaching 0.138 and 0.16, respectively, which could both meet the high temperature rise combustor requirements. However, the SAC combustion performance is sharply deteriorated, which can not reach the requirement. Center-staged combustor technology advantages are quite obvious, indicating its prospects as high temperature rise and high capacity combustor, while multi-swirl combustor has the advantage of high temperature rise as well as low emission.