A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine

Errol Molatudi; Thokozani Justin Kunene; Lagouge Kwanda Tartibu

doi:10.1051/matecconf/202134700013

A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine

Errol Molatudi, Thokozani Justin Kunene, Lagouge Kwanda Tartibu

Mechanical and Industrial Engineering Technology

University of Johannesburg

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

The effects of sound pressure level at two observation positions of a fixed and varied blade pitch angle at Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. The objective of the study is to compare the noise dissipation and output power/energy of the airfoil blades design of the vertical axis wind turbine in residential zones. The Ffowcs Williams -Hawkings (FHWH) techniques were applied to validate the output noise and vortex shedding of the different angles of attacks (AoA). The study postulated that the time history of the calculated sound pressure level at two observers positions: the aeroacoustic, blade vortex interaction noise, flow separations, dynamic stall experience from varied angled of attacks are found to produces less noise and vortex shedding compared to the fixed angle of attack.

Original language	English
Title of host publication	12th South African Conference on Computational and Applied Mechanics, SACAM 2020
Editors	Sebastian Skatulla
Publisher	EDP Sciences
ISBN (Electronic)	9781713840770
DOIs	https://doi.org/10.1051/matecconf/202134700013
Publication status	Published - 2020
Event	12th South African Conference on Computational and Applied Mechanics, SACAM 2020 - Cape Town, South Africa Duration: 29 Nov 2021 → 1 Dec 2021

Publication series

Name	12th South African Conference on Computational and Applied Mechanics, SACAM 2020

Conference

Conference	12th South African Conference on Computational and Applied Mechanics, SACAM 2020
Country/Territory	South Africa
City	Cape Town
Period	29/11/21 → 1/12/21

Keywords

Aeroacoustic
Angle-of-Attack
Ffowcs-Hawkings
Sound Pressure level (SPL)

ASJC Scopus subject areas

Computational Mechanics
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1051/matecconf/202134700013

Cite this

Molatudi, E., Kunene, T. J., & Tartibu, L. K. (2020). A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine. In S. Skatulla (Ed.), 12th South African Conference on Computational and Applied Mechanics, SACAM 2020 Article 00013 (12th South African Conference on Computational and Applied Mechanics, SACAM 2020). EDP Sciences. https://doi.org/10.1051/matecconf/202134700013

Molatudi, Errol ; Kunene, Thokozani Justin ; Tartibu, Lagouge Kwanda. / A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine. 12th South African Conference on Computational and Applied Mechanics, SACAM 2020. editor / Sebastian Skatulla. EDP Sciences, 2020. (12th South African Conference on Computational and Applied Mechanics, SACAM 2020).

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abstract = "The effects of sound pressure level at two observation positions of a fixed and varied blade pitch angle at Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. The objective of the study is to compare the noise dissipation and output power/energy of the airfoil blades design of the vertical axis wind turbine in residential zones. The Ffowcs Williams -Hawkings (FHWH) techniques were applied to validate the output noise and vortex shedding of the different angles of attacks (AoA). The study postulated that the time history of the calculated sound pressure level at two observers positions: the aeroacoustic, blade vortex interaction noise, flow separations, dynamic stall experience from varied angled of attacks are found to produces less noise and vortex shedding compared to the fixed angle of attack.",

keywords = "Aeroacoustic, Angle-of-Attack, Ffowcs-Hawkings, Sound Pressure level (SPL)",

author = "Errol Molatudi and Kunene, {Thokozani Justin} and Tartibu, {Lagouge Kwanda}",

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Molatudi, E, Kunene, TJ & Tartibu, LK 2020, A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine. in S Skatulla (ed.), 12th South African Conference on Computational and Applied Mechanics, SACAM 2020., 00013, 12th South African Conference on Computational and Applied Mechanics, SACAM 2020, EDP Sciences, 12th South African Conference on Computational and Applied Mechanics, SACAM 2020, Cape Town, South Africa, 29/11/21. https://doi.org/10.1051/matecconf/202134700013

A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine. / Molatudi, Errol; Kunene, Thokozani Justin ; Tartibu, Lagouge Kwanda.
12th South African Conference on Computational and Applied Mechanics, SACAM 2020. ed. / Sebastian Skatulla. EDP Sciences, 2020. 00013 (12th South African Conference on Computational and Applied Mechanics, SACAM 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Molatudi, Errol

AU - Kunene, Thokozani Justin

AU - Tartibu, Lagouge Kwanda

N1 - Publisher Copyright: © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

PY - 2020

Y1 - 2020

N2 - The effects of sound pressure level at two observation positions of a fixed and varied blade pitch angle at Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. The objective of the study is to compare the noise dissipation and output power/energy of the airfoil blades design of the vertical axis wind turbine in residential zones. The Ffowcs Williams -Hawkings (FHWH) techniques were applied to validate the output noise and vortex shedding of the different angles of attacks (AoA). The study postulated that the time history of the calculated sound pressure level at two observers positions: the aeroacoustic, blade vortex interaction noise, flow separations, dynamic stall experience from varied angled of attacks are found to produces less noise and vortex shedding compared to the fixed angle of attack.

AB - The effects of sound pressure level at two observation positions of a fixed and varied blade pitch angle at Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. The objective of the study is to compare the noise dissipation and output power/energy of the airfoil blades design of the vertical axis wind turbine in residential zones. The Ffowcs Williams -Hawkings (FHWH) techniques were applied to validate the output noise and vortex shedding of the different angles of attacks (AoA). The study postulated that the time history of the calculated sound pressure level at two observers positions: the aeroacoustic, blade vortex interaction noise, flow separations, dynamic stall experience from varied angled of attacks are found to produces less noise and vortex shedding compared to the fixed angle of attack.

KW - Aeroacoustic

KW - Angle-of-Attack

KW - Ffowcs-Hawkings

KW - Sound Pressure level (SPL)

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M3 - Conference contribution

AN - SCOPUS:85127592721

T3 - 12th South African Conference on Computational and Applied Mechanics, SACAM 2020

BT - 12th South African Conference on Computational and Applied Mechanics, SACAM 2020

A2 - Skatulla, Sebastian

PB - EDP Sciences

T2 - 12th South African Conference on Computational and Applied Mechanics, SACAM 2020

Y2 - 29 November 2021 through 1 December 2021

ER -

Molatudi E, Kunene TJ , Tartibu LK. A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine. In Skatulla S, editor, 12th South African Conference on Computational and Applied Mechanics, SACAM 2020. EDP Sciences. 2020. 00013. (12th South African Conference on Computational and Applied Mechanics, SACAM 2020). doi: 10.1051/matecconf/202134700013

A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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