Memorias de investigación
Artículos en revistas:
High-order methods for the numerical solution of the BiGlobal linear stability eigenvalue problem in complex geometries.
Año:2010
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
A high-order computational tool based on spectral and spectral/hp elements (J. Fluid. Mech. 2009; to appear) discretizations is employed for the analysis of BiGlobal fluid instability problems. Unlike other implementations of this type, which use a time-stepping-based formulation (J. Comput. Phys. 1994; 110(1):82¿102; J. Fluid Mech. 1996; 322:215¿241), a formulation is considered here in which the discretized matrix is constructed and stored prior to applying an iterative shift-and-invert Arnoldi algorithm for the solution of the generalized eigenvalue problem. In contrast to the time-stepping-based formulations, the matrix-based approach permits searching anywhere in the eigenspace using shifting. Hybrid and fully unstructured meshes are used in conjunction with the spatial discretization. This permits analysis of flow instability on arbitrarily complex 2-D geometries, homogeneous in the third spatial direction and allows both mesh (h)-refinement as well as polynomial (p)-refinement. A series of validation cases has been defined, using well-known stability results in confined geometries. In addition new results are presented for ducts of curvilinear cross-sections with rounded corners.
Internacional
Si
JCR del ISI
Si
Título de la revista
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS
ISSN
0271-2091
Factor de impacto JCR
0,936
Información de impacto
Volumen
DOI
Número de revista
Desde la página
923
Hasta la página
952
Mes
ENERO
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Enseñanzas Básicas de la Ingeniería Naval