Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine

W. T. Chong, Ahmad Fazlizan Abdullah, S. Y. Yip, K. H. Wong, L. F. Sim, S. C. Poh, W. P. Hew

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The integration of a vertical axis wind turbine (VAWT) with the novel omni-directional shroud is proposed. It consists of the upper wall, lower wall and an array of 5 guide-vanes. Wind from all directions is collected radially from a larger area and the geometry of omni-directional shroud creates a venturi effect to increase the wind speed before entering the wind turbine. Guide-vanes aid to channel wind to better angles-of-attack of the turbine blades. Hence, self-starting behavior of the VAWT and the coefficient of power improve. The system was investigated numerically by simulating the wind flow over the omni-directional shroud with a single bladed NACA 0015 airfoil VAWT. In this 2D simulation, the shear stress transport (SST) k-ω turbulence model with the sliding mesh method was used with the tip speed ratio of 5.1 for the wind turbine. The result was verified by re-simulating the experiment published by the Sandia National Laboratories. The result shows that the torque coefficient of the VAWT was increased up to 287% as compared to the bare VAWT. This system improves the performance of the VAWT and it has a great potential to be sited in urban areas for onsite and grid-connected power generation.

Original languageEnglish
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event3rd IET International Conference on Clean Energy and Technology, CEAT 2014 - Kuching, Malaysia
Duration: 24 Nov 201426 Nov 2014

Other

Other3rd IET International Conference on Clean Energy and Technology, CEAT 2014
CountryMalaysia
CityKuching
Period24/11/1426/11/14

Fingerprint

Wind turbines
Angle of attack
Turbulence models
Airfoils
Turbomachine blades
Power generation
Shear stress
Turbines
Torque
Geometry
Experiments

Keywords

  • Omni-directional shroud
  • On-site energy generation
  • Renewable energy
  • Urban wind energy
  • Vertical axis wind turbine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Chong, W. T., Abdullah, A. F., Yip, S. Y., Wong, K. H., Sim, L. F., Poh, S. C., & Hew, W. P. (2014). Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine. Paper presented at 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia. https://doi.org/10.1049/cp.2014.1465

Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine. / Chong, W. T.; Abdullah, Ahmad Fazlizan; Yip, S. Y.; Wong, K. H.; Sim, L. F.; Poh, S. C.; Hew, W. P.

2014. Paper presented at 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia.

Research output: Contribution to conferencePaper

Chong, WT, Abdullah, AF, Yip, SY, Wong, KH, Sim, LF, Poh, SC & Hew, WP 2014, 'Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine' Paper presented at 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia, 24/11/14 - 26/11/14, . https://doi.org/10.1049/cp.2014.1465
Chong WT, Abdullah AF, Yip SY, Wong KH, Sim LF, Poh SC et al. Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine. 2014. Paper presented at 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia. https://doi.org/10.1049/cp.2014.1465
Chong, W. T. ; Abdullah, Ahmad Fazlizan ; Yip, S. Y. ; Wong, K. H. ; Sim, L. F. ; Poh, S. C. ; Hew, W. P. / Design and numerical study of the integration of omnidirectional shroud with vertical axis wind turbine. Paper presented at 3rd IET International Conference on Clean Energy and Technology, CEAT 2014, Kuching, Malaysia.
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