• Degenerate perturbation theory in thermoacoustics: high-order sensitivities and exceptional points 

      Orchini, Alessandro; Magri, Luca; Silva, Camilo F.; Mensah, Georg; Moeck, Jonas (Peer reviewed; Journal article, 2020)
      In this study, we connect concepts that have been recently developed in thermoacoustics, specifically (i) high-order spectral perturbation theory, (ii) symmetry-induced degenerate thermoacoustic modes, (iii) intrinsic ...
    • Linear Flow Analysis Inspired by Mathematical Methods from Quantum Mechanics 

      Magri, Luca; Schmid, Peter; Moeck, Jonas (Peer reviewed; Journal article, 2022)
      Since its birth in the 1920s, quantum mechanics has motivated and advanced the analysis of linear operators. In this effort, it significantly contributed to the development of sophisticated mathematical tools in spectral ...
    • Sensitivity of the Rayleigh criterion in thermoacoustics 

      Magri, Luca; Juniper, Matthew; Moeck, Jonas (Peer reviewed; Journal article, 2020)
      Thermoacoustic instabilities are one of the most challenging problems faced by gas turbine and rocket motor manufacturers. The key instability mechanism is described by the Rayleigh criterion. The Rayleigh criterion does ...