Artículo
Galerkin boundary elements for a computation of the surface tractions in exterior Stokes flows
D'elia, Jorge
; Battaglia, Laura
; Cardona, Alberto
; Storti, Mario Alberto
; Rios Rodriguez, Gustavo Adolfo
Fecha de publicación:
09/2014
Editorial:
Asme-amer Soc Mechanical Eng
Revista:
Journal Of Fluids Engineering-transactions Of The Asme
ISSN:
0098-2202
e-ISSN:
1528-901X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the computation of a three–dimensional steady creeping flow around a rigid body, the total body force and torque are well predicted using a boundary integral equation (BIE) with a single concentrated pair Stokeslet- Rotlet located at an interior point of the body. However, the distribution of surface tractions are seldom considered. Then, a completed indirect velocity BIE of Fredholm type and second-kind is employed for the computation of the pointwise tractions, and it is numerically solved by using either collocation or Galerkin weighting procedures over flat triangles. In the Galerkin case, a full numerical quadrature is proposed in order to handle the weak singularity of the tensor kernels, which is an extension for fluid engineering of a general framework (Taylor, 2003, “Accurate and Efficient Numerical Integration of Weakly Singulars Integrals in Galerkin EFIE Solutions,” IEEE Trans. on Antennas and Propag., 51(7), pp. 1630–1637). Several numerical simulations of steady creeping flow around closed bodies are presented, where results compare well with semianalytical and finite-element solutions, showing the ability of the method for obtaining the viscous drag and capturing the singular behavior of the surface tractions close to edges and corners. Also, deliberately intricate geometries are considered.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CIMEC)
Articulos de CENTRO DE INVESTIGACION DE METODOS COMPUTACIONALES
Articulos de CENTRO DE INVESTIGACION DE METODOS COMPUTACIONALES
Citación
D'elia, Jorge; Battaglia, Laura; Cardona, Alberto; Storti, Mario Alberto; Rios Rodriguez, Gustavo Adolfo; Galerkin boundary elements for a computation of the surface tractions in exterior Stokes flows; Asme-amer Soc Mechanical Eng; Journal Of Fluids Engineering-transactions Of The Asme; 136; 11; 9-2014; e111102
Compartir
Altmétricas