Diseño de jetbox para transición de flujo a presión a lámina libre con técnicas CFD
[EN] The hydraulic analysis of dam stilling basins requires employing experimental models. Given that building a scaled spillway respecting similarity laws is not always possible, it is common practice to supply the device using a pressurized facility thanks to a jetbox or nozzle that makes the pres...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/128115 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/128115 |
| Access Level: | acceso abierto |
| Palabra clave: | CFD RNG k-epsilon Jetbox Hidráulica MECANICA DE FLUIDOS INGENIERIA HIDRAULICA |
| Sumario: | [EN] The hydraulic analysis of dam stilling basins requires employing experimental models. Given that building a scaled spillway respecting similarity laws is not always possible, it is common practice to supply the device using a pressurized facility thanks to a jetbox or nozzle that makes the pressurized flow become free surface. Little attention is paid to this crucial device design, so this work proposes its design using a threedimensional CFD model with RANS RNG k-¿ for turbulence modeling. The minimum values of certain dimensions, such as stretch lengths or expansion/contraction coefficients, to avoid introducing excessive bias in the future experimental model are computed and the consequences of these parameters on results are reported and discussed. |
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