Developing laminar flow in the entrance region of annuli—Review and extension of standard resolution methods for the hydrodynamic problem
| Autor: | J. Legrand, M. Ould-Rouis, C. Nouar, A. Salem |
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| Rok vydání: | 1995 |
| Předmět: |
Mechanical Engineering
Resolution (electron density) Entrance length General Engineering Reynolds number Laminar flow Geometry Mechanics Function (mathematics) Physics::Fluid Dynamics Momentum diffusion symbols.namesake Distribution (mathematics) Flow (mathematics) Mechanics of Materials symbols General Materials Science Mathematics |
| Zdroj: | International Journal of Engineering Science. 33:1517-1534 |
| ISSN: | 0020-7225 |
| DOI: | 10.1016/0020-7225(95)00016-q |
| Popis: | This paper deals with the theoretical and numerical resolution of the laminar axial developing flow in annuli. In the first part of the article, a review of the different methods of the hydrodynamic problem resolution is given. We have then extended some of the methods performed for circular ducts to annular geometry. In particular we have developed a numerical solution of the complete Navier-Stokes equations, for studying the axial momentum diffusion effect on the flow structure. In the second part of this paper we have compared the results obtained with the different methods and analysed the hydrodynamics characteristics (velocity, pressure distribution and entrance length) as a function of the annular flow parameters (radii ratio, Reynolds number and axial distance from the entrance). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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