دورية أكاديمية
Computational Actuator Disc Models for Wind and Tidal Applications
| العنوان: | Computational Actuator Disc Models for Wind and Tidal Applications |
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| المؤلفون: | B. Johnson, J. Francis, J. Howe, J. Whitty |
| المصدر: | Journal of Renewable Energy, Vol 2014 (2014) |
| بيانات النشر: | Wiley, 2014. |
| سنة النشر: | 2014 |
| المجموعة: | LCC:Renewable energy sources |
| مصطلحات موضوعية: | Renewable energy sources, TJ807-830 |
| الوصف: | This paper details a computational fluid dynamic (CFD) study of a constantly loaded actuator disc model featuring different boundary conditions; these boundary conditions were defined to represent a channel and a duct flow. The simulations were carried out using the commercially available CFD software ANSYS-CFX. The data produced were compared to the one-dimensional (1D) momentum equation as well as previous numerical and experimental studies featuring porous discs in a channel flow. The actuator disc was modelled as a momentum loss using a resistance coefficient related to the thrust coefficient (CT). The model showed good agreement with the 1D momentum theory in terms of the velocity and pressure profiles. Less agreement was demonstrated when compared to previous numerical and empirical data in terms of velocity and turbulence characteristics in the far field. These models predicted a far larger velocity deficit and a turbulence peak further downstream. This study therefore demonstrates the usefulness of the duct boundary condition (for computational ease) for representing open channel flow when simulating far field effects as well as the importance of turbulence definition at the inlet. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2314-4386 2314-4394 |
| Relation: | https://doaj.org/toc/2314-4386; https://doaj.org/toc/2314-4394 |
| DOI: | 10.1155/2014/172461 |
| URL الوصول: | https://doaj.org/article/01a4bb3bbb374b4dab2bc88b36e203ab |
| رقم الأكسشن: | edsdoj.01a4bb3bbb374b4dab2bc88b36e203ab |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23144386 23144394 |
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| DOI: | 10.1155/2014/172461 |