Wave system analyses of four-port through-flow wave rotors

Aiming at four-port through-flow wave rotors used in gas turbines, the pressure wave system inside the channels was simplified, and analytic models were established and proved with foreign experimental results. The analytic wave system models were finally used to analyze the relationships among boundary conditions, wave structures, wave rotor performances, and parameters of other components such as compressors, turbines or combustors. The results show that: the rise of high pressure air (HPA) static pressure could effectively increase the wave rotor pressure ratio, as a result of strengthened entire wave system; the wave rotor performances could be optimized by properly designing the compressors and turbines; the matching of wave rotors and combustors could restrict the combustor design, while the rise of combustor total pressure recovery could enhance the wave rotor compression efficiency.