Assessment of computational tools for the prediction of BVI noise

S. Loiodice, A. Kokkalis, D. Drikakis, G. Perez, G. Bernardini, M. Gennaretti, R. Ponza, M. Hounjet, H. Brouwer

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The paper presents an assessment of various computational tools pertinent to the prediction of rotor blade induced noise developed by the partners of the Friendcopter project entitled "Integration of Technologies in Support of a Passenger and Environmentally Friendly Helicopter". The computational tools comprise of coupled aeroelasticity and aerodynamic analysis tools, which provide input to the aeroacoustic codes used for predicting the helicopter footprints and noise levels. As these computational tools will be employed during the design phase of future environmentally friendly helicopters, assessment of their accuracy is required. In the nineties the HELISHAPE consortium embarked into a European research programme on rotorcraft aerodynamics and acoustics conducting a parametric model rotor test. These results have been reported in previous European projects (EROS, ROSAA). The test cases are based on two modern rotors designed by Eurocopter, the EC/ONERA 7A and 7AD, which differ only by their blade tip shape: the 7A has a rectangular blade tip while the 7AD has the SSP8 parabolic tip with taper. The choice of these experimental cases seemed to be the most appropriate ones for assessing the present computational tools. In the paper, we describe the various aeroacoustic methods employed and present a comparative analysis and assessment of the predictive results from these.

Conference

ConferenceNational Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006
Abbreviated title ERF 2006
CountryNetherlands
CityMaastricht
Period12/09/0614/09/06

Fingerprint

Helicopter
Blade
Helicopters
Prediction
Rotor
Aeroacoustics
Rotors
Aerodynamics
Aeroelasticity
Parametric Model
Comparative Analysis
Turbomachine blades
Acoustics

Keywords

  • aeroacoustics
  • rotorcraft
  • helishape
  • FW-H
  • Friendcopter
  • dynamics
  • aerodynamics
  • computational methods

Cite this

Loiodice, S., Kokkalis, A., Drikakis, D., Perez, G., Bernardini, G., Gennaretti, M., ... Brouwer, H. (2007). Assessment of computational tools for the prediction of BVI noise. 136-158. Paper presented at National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006, Maastricht, Netherlands.
Loiodice, S. ; Kokkalis, A. ; Drikakis, D. ; Perez, G. ; Bernardini, G. ; Gennaretti, M. ; Ponza, R. ; Hounjet, M. ; Brouwer, H. / Assessment of computational tools for the prediction of BVI noise. Paper presented at National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006, Maastricht, Netherlands.23 p.
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title = "Assessment of computational tools for the prediction of BVI noise",
abstract = "The paper presents an assessment of various computational tools pertinent to the prediction of rotor blade induced noise developed by the partners of the Friendcopter project entitled {"}Integration of Technologies in Support of a Passenger and Environmentally Friendly Helicopter{"}. The computational tools comprise of coupled aeroelasticity and aerodynamic analysis tools, which provide input to the aeroacoustic codes used for predicting the helicopter footprints and noise levels. As these computational tools will be employed during the design phase of future environmentally friendly helicopters, assessment of their accuracy is required. In the nineties the HELISHAPE consortium embarked into a European research programme on rotorcraft aerodynamics and acoustics conducting a parametric model rotor test. These results have been reported in previous European projects (EROS, ROSAA). The test cases are based on two modern rotors designed by Eurocopter, the EC/ONERA 7A and 7AD, which differ only by their blade tip shape: the 7A has a rectangular blade tip while the 7AD has the SSP8 parabolic tip with taper. The choice of these experimental cases seemed to be the most appropriate ones for assessing the present computational tools. In the paper, we describe the various aeroacoustic methods employed and present a comparative analysis and assessment of the predictive results from these.",
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author = "S. Loiodice and A. Kokkalis and D. Drikakis and G. Perez and G. Bernardini and M. Gennaretti and R. Ponza and M. Hounjet and H. Brouwer",
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Loiodice, S, Kokkalis, A, Drikakis, D, Perez, G, Bernardini, G, Gennaretti, M, Ponza, R, Hounjet, M & Brouwer, H 2007, 'Assessment of computational tools for the prediction of BVI noise' Paper presented at National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006, Maastricht, Netherlands, 12/09/06 - 14/09/06, pp. 136-158.

Assessment of computational tools for the prediction of BVI noise. / Loiodice, S.; Kokkalis, A.; Drikakis, D.; Perez, G.; Bernardini, G.; Gennaretti, M.; Ponza, R.; Hounjet, M.; Brouwer, H.

2007. 136-158 Paper presented at National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006, Maastricht, Netherlands.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Assessment of computational tools for the prediction of BVI noise

AU - Loiodice, S.

AU - Kokkalis, A.

AU - Drikakis, D.

AU - Perez, G.

AU - Bernardini, G.

AU - Gennaretti, M.

AU - Ponza, R.

AU - Hounjet, M.

AU - Brouwer, H.

PY - 2007/9/14

Y1 - 2007/9/14

N2 - The paper presents an assessment of various computational tools pertinent to the prediction of rotor blade induced noise developed by the partners of the Friendcopter project entitled "Integration of Technologies in Support of a Passenger and Environmentally Friendly Helicopter". The computational tools comprise of coupled aeroelasticity and aerodynamic analysis tools, which provide input to the aeroacoustic codes used for predicting the helicopter footprints and noise levels. As these computational tools will be employed during the design phase of future environmentally friendly helicopters, assessment of their accuracy is required. In the nineties the HELISHAPE consortium embarked into a European research programme on rotorcraft aerodynamics and acoustics conducting a parametric model rotor test. These results have been reported in previous European projects (EROS, ROSAA). The test cases are based on two modern rotors designed by Eurocopter, the EC/ONERA 7A and 7AD, which differ only by their blade tip shape: the 7A has a rectangular blade tip while the 7AD has the SSP8 parabolic tip with taper. The choice of these experimental cases seemed to be the most appropriate ones for assessing the present computational tools. In the paper, we describe the various aeroacoustic methods employed and present a comparative analysis and assessment of the predictive results from these.

AB - The paper presents an assessment of various computational tools pertinent to the prediction of rotor blade induced noise developed by the partners of the Friendcopter project entitled "Integration of Technologies in Support of a Passenger and Environmentally Friendly Helicopter". The computational tools comprise of coupled aeroelasticity and aerodynamic analysis tools, which provide input to the aeroacoustic codes used for predicting the helicopter footprints and noise levels. As these computational tools will be employed during the design phase of future environmentally friendly helicopters, assessment of their accuracy is required. In the nineties the HELISHAPE consortium embarked into a European research programme on rotorcraft aerodynamics and acoustics conducting a parametric model rotor test. These results have been reported in previous European projects (EROS, ROSAA). The test cases are based on two modern rotors designed by Eurocopter, the EC/ONERA 7A and 7AD, which differ only by their blade tip shape: the 7A has a rectangular blade tip while the 7AD has the SSP8 parabolic tip with taper. The choice of these experimental cases seemed to be the most appropriate ones for assessing the present computational tools. In the paper, we describe the various aeroacoustic methods employed and present a comparative analysis and assessment of the predictive results from these.

KW - aeroacoustics

KW - rotorcraft

KW - helishape

KW - FW-H

KW - Friendcopter

KW - dynamics

KW - aerodynamics

KW - computational methods

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M3 - Paper

SP - 136

EP - 158

ER -

Loiodice S, Kokkalis A, Drikakis D, Perez G, Bernardini G, Gennaretti M et al. Assessment of computational tools for the prediction of BVI noise. 2007. Paper presented at National Aerospace Laboratory NLR - 32nd European Rotorcraft Forum, ERF 2006, Maastricht, Netherlands.