Large eddy simulations for hydrogen combustion modelling. Applications to ballistic base drag reduction units and nuclear accident sequence analysis

• Autores: Francisco Nicolás Pérez
• Directores de la Tesis: Francisco Javier Sánchez Velasco (dir. tes.), José Serna Serrano (codir. tes.)
• Lectura: En la Universidad Politécnica de Cartagena ( España ) en 2022
• Idioma: español
• Tribunal Calificador de la Tesis: Soledad Le Clainche Martínez (presid.), Ramón Antonio Otón Martínez (secret.), Daniele Dovizio (voc.)
• Programa de doctorado: Programa de Doctorado en Energías Renovables y Eficiencia Energética por la Universidad Politécnica de Cartagena
• Materias:
  • Física
    • Mecánica
      • Mecánica de fluidos
  • Ciencias tecnológicas
    • Ingeniería y tecnología aeronáuticas
      • Aerodinámica
      • Cargas aerodinámicas
    • Tecnología nuclear
      • Explosiones nucleares
    • Tecnología de los ferrocarriles
• Enlaces
  • Tesis en acceso abierto en: Repositorio Digital de la UPCT
• Resumen

  • Resumen de la tesis:

    In this work, Computational Fluid Dynamics (CFD) simulations using Large Eddy Simulation (LES) turbulence modeling are proposed for analyzing problems where traditionally Reynolds Averaged Navier Stokes Equations (RANS) have been extensively used, but with results that did not find good agreement when compared with experimental data. This work is focused on two problems: external ballistics for slender bodies with drag reduction (Base Bleed) units, and nuclear accident sequences.

    CFD models to estimate the drag coefficient of slender bodies with spin and Base Bleed technology under transonic and supersonic (Mach number 0.99–1.5) quasi-steady conditions. On the other hand, the modelling of premixed combustion in three-dimensional confined scenarios is also studied in this work. LES models have been proposed and assessed for predicting flame combustion acceleration and interaction in the presence of turbulence.

    http://repositorio.bib.upct.es/dspace/