Home > Research > Publications & Outputs > Analysis of unsteady flows past horizonatal axi...

Associated organisational unit

Electronic data

  • asme_jtm_2012_on_web

    Rights statement: Copyright © 2012 by ASME

    Accepted author manuscript, 881 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Analysis of unsteady flows past horizonatal axis wind turbine airfoils based on harmonic balance compressible Navier-Stokes equations with low-speed preconditioning

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

Analysis of unsteady flows past horizonatal axis wind turbine airfoils based on harmonic balance compressible Navier-Stokes equations with low-speed preconditioning. / Campobasso, Sergio; Baba-Ahmadi, Mohammad.
In: Journal of Turbomachinery, Vol. 134, No. 6, 11.2012, p. 061020-1/061020-13.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

APA

Vancouver

Author

Bibtex

@article{6d1f6344a7154a939727eac73dde8c35,
title = "Analysis of unsteady flows past horizonatal axis wind turbine airfoils based on harmonic balance compressible Navier-Stokes equations with low-speed preconditioning",
abstract = "This paper presents the numerical models underlying the implementation of a novel harmonic balance compressible Navier-Stokes solver with low-speed preconditioning for wind turbine unsteady aerodynamics. The numerical integration of the harmonic balance equations is based on a multigrid iteration, and, for the first time, a numerical instability associated with the use of such an explicit approach in this context is discussed and resolved. The harmonic balance solver with low-speed preconditioning is well suited for the analyses of several unsteady periodic low-speed flows, such as those encountered in horizontal axis wind turbines. The computational performance and the accuracy of the technology being developed are assessed by computing the flow field past two sections of a wind turbine blade in yawed wind with both the time-and frequency-domain solvers. Results highlight that the harmonic balance solver can compute these periodic flows more than 10 times faster than its time-domain counterpart, and with an accuracy comparable to that of the time-domain solver.",
keywords = "harmonic balance, Navier-Stokes equations , period horizontal axis wind turbine aerodynamics , low-speed preconditioning",
author = "Sergio Campobasso and Mohammad Baba-Ahmadi",
note = "Copyright {\textcopyright} 2012 by ASME",
year = "2012",
month = nov,
doi = "10.1115/1.4006293",
language = "English",
volume = "134",
pages = "061020--1/061020--13",
journal = "Journal of Turbomachinery",
issn = "0889-504X",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "6",

}

RIS

TY - JOUR

T1 - Analysis of unsteady flows past horizonatal axis wind turbine airfoils based on harmonic balance compressible Navier-Stokes equations with low-speed preconditioning

AU - Campobasso, Sergio

AU - Baba-Ahmadi, Mohammad

N1 - Copyright © 2012 by ASME

PY - 2012/11

Y1 - 2012/11

N2 - This paper presents the numerical models underlying the implementation of a novel harmonic balance compressible Navier-Stokes solver with low-speed preconditioning for wind turbine unsteady aerodynamics. The numerical integration of the harmonic balance equations is based on a multigrid iteration, and, for the first time, a numerical instability associated with the use of such an explicit approach in this context is discussed and resolved. The harmonic balance solver with low-speed preconditioning is well suited for the analyses of several unsteady periodic low-speed flows, such as those encountered in horizontal axis wind turbines. The computational performance and the accuracy of the technology being developed are assessed by computing the flow field past two sections of a wind turbine blade in yawed wind with both the time-and frequency-domain solvers. Results highlight that the harmonic balance solver can compute these periodic flows more than 10 times faster than its time-domain counterpart, and with an accuracy comparable to that of the time-domain solver.

AB - This paper presents the numerical models underlying the implementation of a novel harmonic balance compressible Navier-Stokes solver with low-speed preconditioning for wind turbine unsteady aerodynamics. The numerical integration of the harmonic balance equations is based on a multigrid iteration, and, for the first time, a numerical instability associated with the use of such an explicit approach in this context is discussed and resolved. The harmonic balance solver with low-speed preconditioning is well suited for the analyses of several unsteady periodic low-speed flows, such as those encountered in horizontal axis wind turbines. The computational performance and the accuracy of the technology being developed are assessed by computing the flow field past two sections of a wind turbine blade in yawed wind with both the time-and frequency-domain solvers. Results highlight that the harmonic balance solver can compute these periodic flows more than 10 times faster than its time-domain counterpart, and with an accuracy comparable to that of the time-domain solver.

KW - harmonic balance

KW - Navier-Stokes equations

KW - period horizontal axis wind turbine aerodynamics

KW - low-speed preconditioning

U2 - 10.1115/1.4006293

DO - 10.1115/1.4006293

M3 - Journal article

VL - 134

SP - 061020-1/061020-13

JO - Journal of Turbomachinery

JF - Journal of Turbomachinery

SN - 0889-504X

IS - 6

ER -