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Appraisal and calibration of an aerodynamic moment correction in the actuator line model.

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Title: Appraisal and calibration of an aerodynamic moment correction in the actuator line model.
Authors: Luzzati, Emanuele1 (AUTHOR), Mariotti, Alessandro1 (AUTHOR) alessandro.mariotti@unipi.it, Leonardi, Stefano2 (AUTHOR), Salvetti, Maria Vittoria1 (AUTHOR)
Source: Journal of Renewable & Sustainable Energy. Sep2025, Vol. 17 Issue 5, p1-14. 14p.
Subject Terms: *Calibration, *Wakes (Fluid dynamics), *Sensitivity analysis, *Aerofoils, *Computational aerodynamics, *Aerodynamic load
Abstract: The Actuator Line Model (ALM) is commonly used for moving airfoil simulations since it allows for load predictions with reduced computational cost compared to simulations that resolve the airfoil geometry. We implement an aerodynamic moment correction in the ALM simulations, which involves introducing two additional opposite body forces of equal magnitude, applied at a distance such that they generate the corresponding pitching moment. The uncertain parameters are the moment regularization kernels for these forces, i.e., their Gaussian spreading and the distance between these forces and the aerodynamic center. In addition to these two parameters, the lift and drag regularization kernels, which were already present in the original version of the ALM, had to be adapted for the new force configuration. We performed a stochastic sensitivity analysis to assess the effect of the three uncertain parameters on the wake flow features for a simulation of the NACA0012 airfoil and benchmark them against a resolved simulation. Through a comparison with the latter, we also calibrate the ALM parameters. The calibrated moment correction improves the ALM wake predictions, particularly in the far wake region. The most relevant parameters are the two force spreading kernels. In contrast, the distance between the application points of the forces is mainly used for fine-tuning. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 189039913
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Appraisal and calibration of an aerodynamic moment correction in the actuator line model.
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  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Luzzati%2C+Emanuele%22">Luzzati, Emanuele</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mariotti%2C+Alessandro%22">Mariotti, Alessandro</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alessandro.mariotti@unipi.it</i><br /><searchLink fieldCode="AR" term="%22Leonardi%2C+Stefano%22">Leonardi, Stefano</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Salvetti%2C+Maria+Vittoria%22">Salvetti, Maria Vittoria</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Renewable+%26+Sustainable+Energy%22">Journal of Renewable & Sustainable Energy</searchLink>. Sep2025, Vol. 17 Issue 5, p1-14. 14p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Calibration%22">Calibration</searchLink><br />*<searchLink fieldCode="DE" term="%22Wakes+%28Fluid+dynamics%29%22">Wakes (Fluid dynamics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Sensitivity+analysis%22">Sensitivity analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerofoils%22">Aerofoils</searchLink><br />*<searchLink fieldCode="DE" term="%22Computational+aerodynamics%22">Computational aerodynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerodynamic+load%22">Aerodynamic load</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The Actuator Line Model (ALM) is commonly used for moving airfoil simulations since it allows for load predictions with reduced computational cost compared to simulations that resolve the airfoil geometry. We implement an aerodynamic moment correction in the ALM simulations, which involves introducing two additional opposite body forces of equal magnitude, applied at a distance such that they generate the corresponding pitching moment. The uncertain parameters are the moment regularization kernels for these forces, i.e., their Gaussian spreading and the distance between these forces and the aerodynamic center. In addition to these two parameters, the lift and drag regularization kernels, which were already present in the original version of the ALM, had to be adapted for the new force configuration. We performed a stochastic sensitivity analysis to assess the effect of the three uncertain parameters on the wake flow features for a simulation of the NACA0012 airfoil and benchmark them against a resolved simulation. Through a comparison with the latter, we also calibrate the ALM parameters. The calibrated moment correction improves the ALM wake predictions, particularly in the far wake region. The most relevant parameters are the two force spreading kernels. In contrast, the distance between the application points of the forces is mainly used for fine-tuning. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=189039913
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1063/5.0287656
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1
    Subjects:
      – SubjectFull: Calibration
        Type: general
      – SubjectFull: Wakes (Fluid dynamics)
        Type: general
      – SubjectFull: Sensitivity analysis
        Type: general
      – SubjectFull: Aerofoils
        Type: general
      – SubjectFull: Computational aerodynamics
        Type: general
      – SubjectFull: Aerodynamic load
        Type: general
    Titles:
      – TitleFull: Appraisal and calibration of an aerodynamic moment correction in the actuator line model.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Luzzati, Emanuele
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          Name:
            NameFull: Mariotti, Alessandro
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            NameFull: Leonardi, Stefano
      – PersonEntity:
          Name:
            NameFull: Salvetti, Maria Vittoria
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      – BibEntity:
          Dates:
            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 19417012
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              Value: 17
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Journal of Renewable & Sustainable Energy
              Type: main
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