Memorias de investigación
Conferencias:
Computation of nonlinear streaky structures in boundary layer flow
Año:2013
Áreas de investigación
  • Mecánica de fluidos,
  • Ingeniería aeronaútica
Datos
Descripción
In this work, the reduced Navier Stokes (RNS) equations are numerically integrated. This formulation describes the flow in a three-dimensional boundary layer that also presents a short characteristic space scale in the spanwise direction. RNS equations are used to calculate nonlinear finite amplitude "streaks", and the results agree with those reported in the literature, typically obtained using direct numerical simulation (DNS) or nonlinear parabolized stability equations (PSE). "Streaks" simulations through the RNS integration are much cheaper than using DNS, and avoid stability problems that appear in the PSE when the amplitude of the "streak" is not small. The RNS integration code is also used to calculate the "streaks" that naturally emerge at the leading edge of a flat plate boundary layer in the absence of any free stream perturbations. Up to now, the existing results for these "streaks" have been only calculated in the linear limit (small amplitude), and in this work their calculation is carried out in the fully nonlinear regime (finite amplitude).
Internacional
Si
ISSN o ISBN
00-0000-000-0
Entidad relacionada
ECCOMAS (European Community of Computational Methods in Applied Sciences)
Nacionalidad Entidad
FRANCIA
Lugar del congreso
Burdeos, Francia
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
  • Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica