Simulation of the operating process of the combustion chamber of the gas turbine unit using an optimized global combustion mechanism

Abstract

stract: The article presents an algorithm for optimizing combustion mechanisms, according to which three-stage methane combustion mechanism was optimized for operation under conditions of lean combustion of a premixed mixture. This mechanism was used to model the flame tube of the Siemens SGT-100 combustion chamber. The obtained modeling results were compared with experimental data on the flame and swirling flow parameters. For the proposed approach in combination with Eddy Dissipation Concept combustion model with various methods for calculation the coefficient of the latter, good agreement was obtained with experimental data in the main combustion products, flame temperature and carbon monoxide emission. The possibility of further improving for the pre-exponential factor of individual reactions of the combustion mechanism is shown doi 10.54708/19926502_2025_29210853