Dynamic Modeling and Parameter Influence Analysis of the Dual Axis Gas Turbine During the Starting Process
In order to simulate the highly nonlinear starting process of the dual axis gas turbine,the dynamic equation of the gas turbine was added to the steady-state model to study the variation law of aerodynamic parameters during the starting process of the gas turbine.Firstly,a steady-state working model of the gas turbine starting process was established by combining thermodynamic modules such as compressor,combustion chamber,gas turbine,power turbine,and air system;Considering the characteristics of low-speed components,the rotor dynamic equations of the gas generator and power turbine were given,and the improved Euler method was used for efficient iterative solution to achieve dynamic simulation of the gas turbine from start-up to stable operation at idle.Secondly,under environmental conditions of atmospheric temperature 288.15 K and atmospheric pressure101.325kPa,as well as given fuel supply patterns and starter power characteristics,the variation rules of gas generator speed,power turbine speed,exhaust temperature,and residual power of gas generator rotor over time were analyzed.Finally,by inputting relevant data of a certain type of dual axisgas turbine into the above simulation model,a comparative analysis and research is conducted between the simulation model and experimental data.The research results indicate that the simulation results and experimental data are in good agreement with the overall trend,indicating that the model has high simulation accuracy and can provide good guidance for engineering design and testing.
gas turbinestarting processaerodynamic parameterssteady state modeldynamic modeling
NETL
NSTL
万方数据
