Computational Actuator Disc Models for Wind and Tidal Applications
Joint Authors
Johnson, B.
Francis, J.
Howe, J.
Whitty, J.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-10-28
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
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 ( C T ).
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.
American Psychological Association (APA)
Johnson, B.& Francis, J.& Howe, J.& Whitty, J.. 2014. Computational Actuator Disc Models for Wind and Tidal Applications. Journal of Renewable Energy،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1042887
Modern Language Association (MLA)
Johnson, B.…[et al.]. Computational Actuator Disc Models for Wind and Tidal Applications. Journal of Renewable Energy No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1042887
American Medical Association (AMA)
Johnson, B.& Francis, J.& Howe, J.& Whitty, J.. Computational Actuator Disc Models for Wind and Tidal Applications. Journal of Renewable Energy. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1042887
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1042887