Navier-Stokes simulations of flow past three-dimensional submarine models
| Autor: | David K. Gartling, M.S. Engelman, R.C. Givler, V. Haroutunian |
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| Rok vydání: | 1991 |
| Předmět: |
Computer simulation
Turbulence Mechanical Engineering Computational Mechanics Rotational symmetry General Physics and Astronomy Reynolds number Geometry Mechanics Ellipsoid Finite element method Computer Science Applications Physics::Fluid Dynamics symbols.namesake Flow (mathematics) Mechanics of Materials Hull symbols Mathematics |
| Zdroj: | Computer Methods in Applied Mechanics and Engineering. 87:175-200 |
| ISSN: | 0045-7825 |
| DOI: | 10.1016/0045-7825(91)90005-q |
| Popis: | The finite element method has been used to simulate steady, external fluid flows past submarine models at Reynolds number (based upon model length) equal to 1.2 × 10 7 . Model geometry is comprised of streamlined appendages attached to an axisymmetric hull. An untuned k - ϵ turbulence model was used to close the Reynolds-averaged, Navier-Stokes equations. Benchmark numerical calculations have been compared with experimental data for flow past an ellipsoid of aspect ratio 6. Convergent numerical solutions for flow past the three-dimensional (3-D) submarine models were obtained using a segregated equation algorithm. These latter numerical simulations resulted in discrete matrix problems involving 325,000 unknowns and required 100 Cray X-MP hours of time on a single central processor. Quality of 3-D numerical solutions can be inferred, in part, from the resolution of the vortical flow structure that emanates from hull/appendage junctures. |
| Databáze: | OpenAIRE |
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