Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine

Wind energy is one of the renewable energy resources which is clean and sustainable energy and the wind turbine is used for harnessing energy from the wind. The blades are the key components of a wind turbine to convert wind energy into rotational energy. Recently, wingtip devices are used in the bl...

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Autores principales:	Verma Shalini, Paul Akshoy Ranjan, Jain Anuj, Alam Firoz
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	hawt stall winglet turbulence intensity Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/1a10a64b4d7640ecb43118e34243a388
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spelling	oai:doaj.org-article:1a10a64b4d7640ecb43118e34243a3882021-11-12T11:44:34ZNumerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine2267-124210.1051/e3sconf/202132103004https://doaj.org/article/1a10a64b4d7640ecb43118e34243a3882021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_03004.pdfhttps://doaj.org/toc/2267-1242Wind energy is one of the renewable energy resources which is clean and sustainable energy and the wind turbine is used for harnessing energy from the wind. The blades are the key components of a wind turbine to convert wind energy into rotational energy. Recently, wingtip devices are used in the blades of horizontal axis wind turbine (HAWT), which decreases the vortex and drag, while increases the lift and thereby improve the performance of the turbine. In the present study, a winglet is used at the tip of an NREL phase VI wind turbine blade. Solidworks, Pointwise, and Ansys-Fluent are used for geometric modeling, computational grid generation, and CFD simulation, respectively. The computational result obtained using SST k-ω turbulence modeling is well validated with the experimental data of NREL at 5 and 7 m/s of wind speeds. Numerical investigation of stall characteristics is carried out for wingleted blade at higher turbulence intensity (21% and 25%) and angle of attack (00 to 300 at 50 intervals) at 7 m/s wind speed. The result found that wingletd blade delay stall to 150 for both the cases of turbulence intensity. Increasing the turbulence intensity increases the lift coefficient at stall angle but drag coefficient also increases and thus a lower aerodynamic performance (CL/CD ratio = 13) is obtained. Wingleted blade improves the performance as the intensity of vortices is smaller compared to baseline bladeVerma ShaliniPaul Akshoy RanjanJain AnujAlam FirozEDP Sciencesarticlehawtstallwingletturbulence intensityEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 03004 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	hawt stall winglet turbulence intensity Environmental sciences GE1-350
spellingShingle	hawt stall winglet turbulence intensity Environmental sciences GE1-350 Verma Shalini Paul Akshoy Ranjan Jain Anuj Alam Firoz Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
description	Wind energy is one of the renewable energy resources which is clean and sustainable energy and the wind turbine is used for harnessing energy from the wind. The blades are the key components of a wind turbine to convert wind energy into rotational energy. Recently, wingtip devices are used in the blades of horizontal axis wind turbine (HAWT), which decreases the vortex and drag, while increases the lift and thereby improve the performance of the turbine. In the present study, a winglet is used at the tip of an NREL phase VI wind turbine blade. Solidworks, Pointwise, and Ansys-Fluent are used for geometric modeling, computational grid generation, and CFD simulation, respectively. The computational result obtained using SST k-ω turbulence modeling is well validated with the experimental data of NREL at 5 and 7 m/s of wind speeds. Numerical investigation of stall characteristics is carried out for wingleted blade at higher turbulence intensity (21% and 25%) and angle of attack (00 to 300 at 50 intervals) at 7 m/s wind speed. The result found that wingletd blade delay stall to 150 for both the cases of turbulence intensity. Increasing the turbulence intensity increases the lift coefficient at stall angle but drag coefficient also increases and thus a lower aerodynamic performance (CL/CD ratio = 13) is obtained. Wingleted blade improves the performance as the intensity of vortices is smaller compared to baseline blade
format	article
author	Verma Shalini Paul Akshoy Ranjan Jain Anuj Alam Firoz
author_facet	Verma Shalini Paul Akshoy Ranjan Jain Anuj Alam Firoz
author_sort	Verma Shalini
title	Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
title_short	Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
title_full	Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
title_fullStr	Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
title_full_unstemmed	Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
title_sort	numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/1a10a64b4d7640ecb43118e34243a388
work_keys_str_mv	AT vermashalini numericalinvestigationofstallcharacteristicsforwingletbladeofahorizontalaxiswindturbine AT paulakshoyranjan numericalinvestigationofstallcharacteristicsforwingletbladeofahorizontalaxiswindturbine AT jainanuj numericalinvestigationofstallcharacteristicsforwingletbladeofahorizontalaxiswindturbine AT alamfiroz numericalinvestigationofstallcharacteristicsforwingletbladeofahorizontalaxiswindturbine
_version_	1718430540691931136

Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine

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