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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 languageEnglish
Title of host publication12th South African Conference on Computational and Applied Mechanics, SACAM 2020
EditorsSebastian Skatulla
PublisherEDP Sciences
ISBN (Electronic)9781713840770
DOIs
Publication statusPublished - 2020
Event12th South African Conference on Computational and Applied Mechanics, SACAM 2020 - Cape Town, South Africa
Duration: 29 Nov 20211 Dec 2021

Publication series

Name12th South African Conference on Computational and Applied Mechanics, SACAM 2020

Conference

Conference12th South African Conference on Computational and Applied Mechanics, SACAM 2020
Country/TerritorySouth Africa
CityCape Town
Period29/11/211/12/21

Keywords

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

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanical Engineering

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