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Development of 1D Model of Constant-Volume Combustor and Numerical Analysis of the Exhaust Nozzle

Author

Listed:
  • Panagiotis Gallis

    (Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

  • Daniela Anna Misul

    (Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

  • Bastien Boust

    (Institut PPRIME, CNRS-ENSMA-Université de Poitiers, 1 Avenue Clément Ader, 86961 Chasseneuil, France)

  • Marc Bellenoue

    (Institut PPRIME, CNRS-ENSMA-Université de Poitiers, 1 Avenue Clément Ader, 86961 Chasseneuil, France)

  • Simone Salvadori

    (Department of Energy, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

Abstract

Pressure gain combustion cycles are under the spotlight due to their higher theoretical cycle thermal efficiency compared to conventional machines. Under this prism, a constant-volume combustor (CVC) prototype supplied with a mixture of air and liquid iso–octane was developed. The efforts of the current study were focused on both creating a 1D model of the experimental test rig for the CVC analysis and a 3D numerical simulation of the exhaust system. The goal of the study was to retrieve the total outlet quantities of the combustor, which would otherwise be difficult to assess experimentally, and to investigate the pulsating flow field at the outlet. First, a thorough description of the reduced order model was accompanied with the model’s validation using the available experimental data of the chamber. Then, the resulting outlet stagnation properties of the CVC were imposed as spatially averaged transient boundary conditions to the 3D exhaust flow domain. The unsteady Reynolds–averaged Navier–Stokes equations were solved for a sufficient number of periods, and the assessment of the out-take system in terms of losses and attenuation was conducted. In conclusion, the analysis of the combustor’s outflow will pave the way for an effective future design of the CVC exhaust system.

Suggested Citation

  • Panagiotis Gallis & Daniela Anna Misul & Bastien Boust & Marc Bellenoue & Simone Salvadori, 2024. "Development of 1D Model of Constant-Volume Combustor and Numerical Analysis of the Exhaust Nozzle," Energies, MDPI, vol. 17(5), pages 1-24, March.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:5:p:1191-:d:1350023
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    References listed on IDEAS

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    1. Sousa, Jorge & Paniagua, Guillermo & Collado Morata, Elena, 2017. "Thermodynamic analysis of a gas turbine engine with a rotating detonation combustor," Applied Energy, Elsevier, vol. 195(C), pages 247-256.
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