Numerical Investigation of the Droplet Behavior in Cascades Using a Finite Volume Method
This paper describes an Eulerian/Lagrangian two-phase model for wet steam. Two-dimensional inviscid transonic cascade flow is simulated using a cell- vertex finite volume space discretization method on structured triangular mesh. A pseudo time scheme is used to march the solution to steady state. Th...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | Universidad Veracruzana |
| Repositorio: | Redalyc-UV |
| OAI Identifier: | oai:redalyc.org:61552758008 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=61552758008 |
| Access Level: | acceso abierto |
| Palabra clave: | Computación two wet steam phase flow Cascade flow steam turbines |
| Sumario: | This paper describes an Eulerian/Lagrangian two-phase model for wet steam. Two-dimensional inviscid transonic cascade flow is simulated using a cell- vertex finite volume space discretization method on structured triangular mesh. A pseudo time scheme is used to march the solution to steady state. The mod el provides an approach for including the interaction between the liquid and gas phases for a pure fluid. The analysis consists in the application of the discret e phase model, for modeling the liquid particle flow, and t he Eulerian conservation equations to the continuous phase. The investigation permits us to know the influence of parameters such as: particle diameter, flow angle and particle velocity on deposition of drops onto stator blade surfaces. These parameters are analyze d to different inlet flow angles and drop sizes in the t urbine. Deposition rate was found to be strongly dependent on increasing inlet flow angle and drop size in the ex ample computed. The purpose of this paper is to present t he results of some calculations of deposition which ar e based on more recent theories or less simplified fl ow models than previously published work. |
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