A generalised fully unsteady hybrid RANS/BEM model for marine propeller flow simulations
| Autor: | Salvatore, F., Calcagni, D., Muscari, R., Riccardo Broglia |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Scopus-Elsevier VI International Conference on Computational Methods in Marine Engineering, MARINE 2015, pp. 613–626, Roma, 15-17 June 2015 info:cnr-pdr/source/autori:Salvatore F.; Calcagni D.; Muscari R.; Broglia R./congresso_nome:VI International Conference on Computational Methods in Marine Engineering, MARINE 2015/congresso_luogo:Roma/congresso_data:15-17 June 2015/anno:2015/pagina_da:613/pagina_a:626/intervallo_pagine:613–626 |
| Popis: | A generalised hybrid RANSE/BEM model for the analysis of hull/propeller interaction in ship hydrodynamics problems at reduced computational cost is presented. Akin to standard hybrid RANSE/BEM models, the coupling between viscous and inviscid- flow solvers is based on a volume-force/effective-inflow approach. The generalization con- sists in coupling a time-accurate solution by BEM of the unsteady flow around the rotating propeller with the solution of the surrounding viscous-flow by unsteady RANSE to account for transient-flow propeller perturbation. The methodology is validated through numeri- cal applications to a simple case study describing a propeller in uniform flow conditions. Numerical results by the proposed hybrid RANSE/BEM model are compared with results by full-RANSE simulations and the capability of the methodology to correctly describe transient propeller flow perturbation to a surrounding viscous flow is investigated. |
| Databáze: | OpenAIRE |
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