The turbine-based rotating detonation engine holds the potential to bring transformative improvements to the performance of aero-engines.However,the exit flow field of the rotating detonation combustor significantly affects the operation of the downstream turbine.To address the operational characteristics of turbines under rotating detonation conditions,a moving shock wave model was established to reconstruct the unsteady inlet conditions of the turbine.Numerical simulations were conducted to study the turbine's performance under these extreme conditions to analyze the evolution and characteristics of its internal flow field and aerodynamic excitation force.The results indicate that the turbine operates under strong nonlinear inflow disturbances.The interaction between the moving shock wave and the turbine generates a complex wave system structure.While the wave system structures upstream and downstream of the turbine are similar,the evolution of shock waves within the turbine varies with different moving shock wave modes.Under detonation conditions,the main source of aerodynamic excitation force for the rotor blades is the wave system structure within the passage,resulting in increased aerodynamic excitation and pressure oscillation on the blade surfaces,while the blade load significantly decreases.
rotating detonationturbineboundary modelingwave system evolutionflow field characteristicsaerodynamic excitation forceaero-engine
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