Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study

This paper presents mesh and time-step dependence study of newly designed drag type vertical axis wind turbine. Ansys FLUENT a commercially available CFD solver was used to perform CFD numerical study on the drag type wind turbine. In computational analysis, 2D models was simulated under unsteady fl...

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Main Authors:	Ashwindran, S., Azizuddin, Abd Aziz, Oumer, A. N.
Format:	Article
Language:	English
Published:	Penerbit UMP 2019
Subjects:	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/1/Computational%20fluid%20dynamic%20%28CFD%29%20of%20vertical-axis%20wind.pdf

id	ump-26050
recordtype	eprints
spelling	ump-260502019-11-21T03:56:14Z http://umpir.ump.edu.my/id/eprint/26050/ Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study Ashwindran, S. Azizuddin, Abd Aziz Oumer, A. N. TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics This paper presents mesh and time-step dependence study of newly designed drag type vertical axis wind turbine. Ansys FLUENT a commercially available CFD solver was used to perform CFD numerical study on the drag type wind turbine. In computational analysis, 2D models was simulated under unsteady flow fields using SST k-ω to achieve stabilized numerical convergence. The model was analyzed at static and dynamic mode, where sliding mesh technique was used to analyze the turbine in dynamic mode. Three main parameters were taken under careful consideration: mesh resolution, turbulence model and time-step. Aerodynamic force was used in mesh sensitivity study for both static and sliding mesh. A small discrepancy in results of 2D sliding mesh result at different time-step and mesh resolution was observed. The generated results showed good agreement between fine and medium mesh with small difference in the initial initialization. In time-step dependency study for static mesh, dt=0.0002 time-step size was chosen for economical computational cost. Penerbit UMP 2019-09-27 Article PeerReviewed pdf en cc_by_nc_4 http://umpir.ump.edu.my/id/eprint/26050/1/Computational%20fluid%20dynamic%20%28CFD%29%20of%20vertical-axis%20wind.pdf Ashwindran, S. and Azizuddin, Abd Aziz and Oumer, A. N. (2019) Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study. Journal of Mechanical Engineering and Sciences (JMES), 13 (3). 5604 -5624. ISSN 2289-4659 (print); 2231-8380 (online) http://journal.ump.edu.my/jmes/article/view/1668 https://doi.org/10.15282/jmes.13.3.2019.24.0450
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Ashwindran, S. Azizuddin, Abd Aziz Oumer, A. N. Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
description	This paper presents mesh and time-step dependence study of newly designed drag type vertical axis wind turbine. Ansys FLUENT a commercially available CFD solver was used to perform CFD numerical study on the drag type wind turbine. In computational analysis, 2D models was simulated under unsteady flow fields using SST k-ω to achieve stabilized numerical convergence. The model was analyzed at static and dynamic mode, where sliding mesh technique was used to analyze the turbine in dynamic mode. Three main parameters were taken under careful consideration: mesh resolution, turbulence model and time-step. Aerodynamic force was used in mesh sensitivity study for both static and sliding mesh. A small discrepancy in results of 2D sliding mesh result at different time-step and mesh resolution was observed. The generated results showed good agreement between fine and medium mesh with small difference in the initial initialization. In time-step dependency study for static mesh, dt=0.0002 time-step size was chosen for economical computational cost.
format	Article
author	Ashwindran, S. Azizuddin, Abd Aziz Oumer, A. N.
author_facet	Ashwindran, S. Azizuddin, Abd Aziz Oumer, A. N.
author_sort	Ashwindran, S.
title	Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
title_short	Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
title_full	Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
title_fullStr	Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
title_full_unstemmed	Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study
title_sort	computational fluid dynamic (cfd) of vertical-axis wind turbine: mesh and time-step sensitivity study
publisher	Penerbit UMP
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/ http://umpir.ump.edu.my/id/eprint/26050/1/Computational%20fluid%20dynamic%20%28CFD%29%20of%20vertical-axis%20wind.pdf
first_indexed	2023-09-18T22:40:19Z
last_indexed	2023-09-18T22:40:19Z
_version_	1777416871346176000

Computational fluid dynamic (CFD) of vertical-axis wind turbine: Mesh and time-step sensitivity study

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