Analysis of low wind speed small hawt using blade element momentum theory

BEMT is a fast, simple and fair accurate tool in designing, analysis and optimize aerodynamics of the wind turbine; however there are some problems facing BEMT like tip losses, centrifugal effect to lift and drag coefficients. The aerodynamic performance of a tapered and twisted small horizontal axi...

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Main Author:	Elsherbeiny, Mohamed Mohamed Takeyeldein
Format:	Thesis
Published:	2015
Subjects:	TJ Mechanical engineering and machinery
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id	my-utm-ep.48723
record_format	uketd_dc
spelling	my-utm-ep.487232020-06-18T06:26:34Z Analysis of low wind speed small hawt using blade element momentum theory 2015-01 Elsherbeiny, Mohamed Mohamed Takeyeldein TJ Mechanical engineering and machinery BEMT is a fast, simple and fair accurate tool in designing, analysis and optimize aerodynamics of the wind turbine; however there are some problems facing BEMT like tip losses, centrifugal effect to lift and drag coefficients. The aerodynamic performance of a tapered and twisted small horizontal axis wind turbine of blade radius 0.42, which operates at low wind speed, was investigated in this study; by Blade Element Momentum Theory (BEMT) and Wind tunnel testing for validation. A BEMT code was developed to predict the power coefficient (Cp) against tip speed ratio (λ) curves of this turbine at different pitch angles. A model of the same turbine was tested in a UTM-LST Low Speed Wind at three different pitch angles -10°, -5° and 0°, to validate the results of BEMT code. The power of the turbine was calculated through the torque of the rotor shaft measured by a torque sensor. The BEMT code showed good agreement with the experimental results at mid-range tip speed ratio (λ<4) and gives relatively high error at high tip speed ratio. .The study showed that for this turbine, pitch angle gives the best Cp distribution over a wide range of tip speed ratios. A Cp — λ curve with optimized pitch angle was then plotted to help modeling a control pitch angle system. 2015-01 Thesis http://eprints.utm.my/id/eprint/48723/ http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85623 masters Universiti Teknologi Malaysia, Faculty of Biosciences and Medical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Elsherbeiny, Mohamed Mohamed Takeyeldein Analysis of low wind speed small hawt using blade element momentum theory
description	BEMT is a fast, simple and fair accurate tool in designing, analysis and optimize aerodynamics of the wind turbine; however there are some problems facing BEMT like tip losses, centrifugal effect to lift and drag coefficients. The aerodynamic performance of a tapered and twisted small horizontal axis wind turbine of blade radius 0.42, which operates at low wind speed, was investigated in this study; by Blade Element Momentum Theory (BEMT) and Wind tunnel testing for validation. A BEMT code was developed to predict the power coefficient (Cp) against tip speed ratio (λ) curves of this turbine at different pitch angles. A model of the same turbine was tested in a UTM-LST Low Speed Wind at three different pitch angles -10°, -5° and 0°, to validate the results of BEMT code. The power of the turbine was calculated through the torque of the rotor shaft measured by a torque sensor. The BEMT code showed good agreement with the experimental results at mid-range tip speed ratio (λ<4) and gives relatively high error at high tip speed ratio. .The study showed that for this turbine, pitch angle gives the best Cp distribution over a wide range of tip speed ratios. A Cp — λ curve with optimized pitch angle was then plotted to help modeling a control pitch angle system.
format	Thesis
qualification_level	Master's degree
author	Elsherbeiny, Mohamed Mohamed Takeyeldein
author_facet	Elsherbeiny, Mohamed Mohamed Takeyeldein
author_sort	Elsherbeiny, Mohamed Mohamed Takeyeldein
title	Analysis of low wind speed small hawt using blade element momentum theory
title_short	Analysis of low wind speed small hawt using blade element momentum theory
title_full	Analysis of low wind speed small hawt using blade element momentum theory
title_fullStr	Analysis of low wind speed small hawt using blade element momentum theory
title_full_unstemmed	Analysis of low wind speed small hawt using blade element momentum theory
title_sort	analysis of low wind speed small hawt using blade element momentum theory
granting_institution	Universiti Teknologi Malaysia, Faculty of Biosciences and Medical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2015
_version_	1747817460060389376

Analysis of low wind speed small hawt using blade element momentum theory

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