For the wave-rotor-topped gas turbines

the exhaust gas recirculation and the fresh air exhaustion phenomena in wave rotors were considered and the status how the fresh air or exhaust gas splits and merges due to the phenomena was studied. The thermodynamic governing equations were derived

comparison and parametric investigation on the general designs was conducted

and regulations in the parametric investigation results were analyzed based on thermodynamic models. Results showed that: the exhaust gas recirculation and the fresh air exhaustion reduced the work output and the thermal efficiency by different degrees; the effect of the exhaust gas recirculation was smaller than the fresh air exhaustion; an appropriate increase in the wave rotor pressure ratio could keep the general performance of the wave-rotor-topped gas turbine with the effects of the exhaust gas recirculation and the fresh air exhaustion.