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Title: The effect of solidity on the performance of H-rotor Darrieus turbine

Abstract

Utilization of wind energy has been investigated for a long period of time by different researchers in different ways. Out of which, the Horizontal Axis Wind Turbine and the Vertical Axis Wind Turbine have now advanced design, but still there is scope to improve their efficiency. The Vertical Axis Wind Turbine (VAWT) has the advantage over Horizontal Axis Wind Turbine (HAWT) for working on omnidirectional air flow without any extra control system. A modified H-rotor Darrieus type VAWT is analysed in this paper, which is a lift based wind turbine. The effect of solidity (i.e. chord length, no. of blades) on power coefficient (C{sub P}) of H-rotor for different tip speed ratios is numerically investigated. The study is conducted using time dependent RANS equations using SST k-ω model. SIMPLE scheme is used as pressure-velocity coupling and in all cases, the second order upwind discretization scheme is chosen for getting more accurate solution. In results, different parameters are compared, which depict the performance of the modified H-rotor Darrieus type VAWT. Double layered H-rotor having inner layer blades with longer chord gives higher power coefficient than those have inner layer blades with smaller chord.

Authors:
; ;  [1]
  1. Department of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000 (Bangladesh)
Publication Date:
OSTI Identifier:
22608550
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1754; Journal Issue: 1; Conference: ICME 2015: 11. international conference on mechanical engineering, Dhaka (Bangladesh), 18-20 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; AIR; AIR FLOW; COMPARATIVE EVALUATIONS; CONTROL SYSTEMS; COUPLING; DESIGN; EFFICIENCY; LAYERS; PERFORMANCE; POWER COEFFICIENT; ROTORS; TIME DEPENDENCE; WIND; WIND TURBINES

Citation Formats

Hassan, S. M. Rakibul, E-mail: rakibulhassan21@gmail.com, Ali, Mohammad, E-mail: mali@me.buet.ac.bd, and Islam, Md. Quamrul, E-mail: quamrul@me.buet.ac.bd. The effect of solidity on the performance of H-rotor Darrieus turbine. United States: N. p., 2016. Web. doi:10.1063/1.4958372.
Hassan, S. M. Rakibul, E-mail: rakibulhassan21@gmail.com, Ali, Mohammad, E-mail: mali@me.buet.ac.bd, & Islam, Md. Quamrul, E-mail: quamrul@me.buet.ac.bd. The effect of solidity on the performance of H-rotor Darrieus turbine. United States. doi:10.1063/1.4958372.
Hassan, S. M. Rakibul, E-mail: rakibulhassan21@gmail.com, Ali, Mohammad, E-mail: mali@me.buet.ac.bd, and Islam, Md. Quamrul, E-mail: quamrul@me.buet.ac.bd. 2016. "The effect of solidity on the performance of H-rotor Darrieus turbine". United States. doi:10.1063/1.4958372.
@article{osti_22608550,
title = {The effect of solidity on the performance of H-rotor Darrieus turbine},
author = {Hassan, S. M. Rakibul, E-mail: rakibulhassan21@gmail.com and Ali, Mohammad, E-mail: mali@me.buet.ac.bd and Islam, Md. Quamrul, E-mail: quamrul@me.buet.ac.bd},
abstractNote = {Utilization of wind energy has been investigated for a long period of time by different researchers in different ways. Out of which, the Horizontal Axis Wind Turbine and the Vertical Axis Wind Turbine have now advanced design, but still there is scope to improve their efficiency. The Vertical Axis Wind Turbine (VAWT) has the advantage over Horizontal Axis Wind Turbine (HAWT) for working on omnidirectional air flow without any extra control system. A modified H-rotor Darrieus type VAWT is analysed in this paper, which is a lift based wind turbine. The effect of solidity (i.e. chord length, no. of blades) on power coefficient (C{sub P}) of H-rotor for different tip speed ratios is numerically investigated. The study is conducted using time dependent RANS equations using SST k-ω model. SIMPLE scheme is used as pressure-velocity coupling and in all cases, the second order upwind discretization scheme is chosen for getting more accurate solution. In results, different parameters are compared, which depict the performance of the modified H-rotor Darrieus type VAWT. Double layered H-rotor having inner layer blades with longer chord gives higher power coefficient than those have inner layer blades with smaller chord.},
doi = {10.1063/1.4958372},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1754,
place = {United States},
year = 2016,
month = 7
}
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