Air-Standard Aerothermodynamic Analysis of Gas Turbine Engines With Wave Rotor Combustion | Zendy

M. Razi Nalim | Zendy; H. Li | Zendy; Pejman Akbari | Zendy

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Air-Standard Aerothermodynamic Analysis of Gas Turbine Engines With Wave Rotor Combustion

Author(s) -

M. Razi Nalim,

H. Li,

Pejman Akbari

Publication year - 2009

Publication title -

journal of engineering for gas turbines and power

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.567

H-Index - 84

eISSN - 1528-8919

pISSN - 0742-4795

DOI - 10.1115/1.3078790

Subject(s) - combustor , combustion , mechanics , rotor (electric) , mach number , combustion chamber , real gas , thermodynamic cycle , mechanical engineering , physics , engineering , chemistry , organic chemistry

The wave rotor combustor can significantly improve gas turbine engine performance by implementing constant-volume combustion. The periodically open and closed combustor complicates thermodynamic analysis, and key cycle parameters depend on complex gas dynamics. In this study, a consistent air-standard aerothermodynamic model with variable specific heat is established. An algebraic model of the dominant gas dynamics estimates fill fraction and internal wave compression for typical port designs, using a relevant flow Mach number to represent wave amplitudes of compression and expansion. Nonlinear equations for thermodynamic state variables are solved numerically by Newton-Raphson iteration. Performance measures and key operating conditions are predicted, and a quasi-one-dimensional computational model is used to evaluate the usefulness of the algebraic model.© 2009 ASME

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