## Abstract We present a new variational formulation of Stokes problem of fluid mechanics that allows to take into account very general boundary conditions for velocity, tangential vorticity or pressure. This formulation conducts a well posed mathematical problem in a family of particular cases. Co
Vorticity–velocity-pressure and stream function-vorticity formulations for the Stokes problem
✍ Scribed by François Dubois; Michel Salaün; Stéphanie Salmon
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 414 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0021-7824
No coin nor oath required. For personal study only.
✦ Synopsis
We study the Stokes problem of incompressible fluid dynamics in two and three-dimension spaces, for general bounded domains with smooth boundary. We use the vorticity-velocity-pressure formulation and introduce a new Hilbert space for the vorticity. We develop an abstract mixed formulation that gives a precise variational frame and conducts to a well-posed Stokes problem involving a new velocity-vorticity boundary condition. In the particular case of simply connected bidimensional domains with homogeneous boundary conditions, the link with the classical stream function-vorticity formulation is completely described, and we show that the vorticity-velocitypressure formulation is a natural mathematical extension of the previous one. 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.
Résumé
Nous étudions le problème de Stokes pour les fluides incompressibles en deux et trois dimensions, sur des domaines bornés à frontière régulière. Nous utilisons pour cela une formulation tourbillonvitesse-pression et nous introduisons un nouvel espace de Hilbert pour le tourbillon. Nous développons une formulation mixte abstraite qui donne un cadre variationnel précis et conduit à un problème de Stokes bien posé faisant intervenir une nouvelle condition limite en vitesse-tourbillon.
📜 SIMILAR VOLUMES
## Communicated by J. C. Nedelec This work studies the three-dimensional Stokes problem expressed in terms of vorticity and velocity variables. We make general assumptions on the regularity and the topological structure of the flow domain: the boundary is Lipschitz and possibly non-connected and t
We work on a vorticity, velocity and pressure formulation of the bidimensional Stokes problem for incompressible fluids. In previous papers, the authors have developed a natural implementation of this scheme. We have then observed that, in case of unstructured meshes with Dirichlet boundary conditio