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Feasibility of the Navier-Stokes harmonic balance method for modelling aircraft unsteady aerodynamics

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Feasibility of the Navier-Stokes harmonic balance method for modelling aircraft unsteady aerodynamics. / Drofelnik, J.; Ronch, A.D.; Sergio Campobasso, M.
ICAS 18 Proceedings. 2018. 0791.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

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Drofelnik, J, Ronch, AD & Sergio Campobasso, M 2018, Feasibility of the Navier-Stokes harmonic balance method for modelling aircraft unsteady aerodynamics. in ICAS 18 Proceedings., 0791, 31st Congress of the International Council of the Aeronautical Sciences, 9/09/18. <https://www.icas.org/ICAS_ARCHIVE/ICAS2018/data/preview/ICAS2018_0791.htm>

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@inproceedings{feddf517a76c46ccadd0770354137564,
title = "Feasibility of the Navier-Stokes harmonic balance method for modelling aircraft unsteady aerodynamics",
abstract = "Traditionally, the models of the unsteady aerodynamic loads needed for aircraft flight simulations have been estimated using the aerodynamic derivatives approach, which, using linear aerodynamic models, provides the influence of the aircraft motion rates on the aerodynamic forces and moments. With increasing aircraft maneuverability resulting in nonlinear unsteady flow regimes, however, the linearity assumption of the conventional aerodynamic derivatives approach makes the method questionable. Methods with higher reliability have been show to be achievable by using knowledge of the aircraft aerodynamic response to harmonic excitations. Prompted by the need of rapidly and accurately estimating such response, this study demonstrates the applicability of the nonlinear frequency-domain Navier-Stokes Harmonic Balance method for predicting periodic aircraft flows with low and high levels of nonlinearity. Using the NASA Common Research Model aircraft case study, it is found that the Harmonic Balance technology yields estimates of the unsteady forces differing negligibly from those of the standard time-domain Navier-Stokes method with a runtime analysis reduced by at least one order of magnitude over that of the time-domain approach. {\textcopyright} 31st Congress of the International Council of the Aeronautical Sciences, ICAS 2018. All rights reserved.",
keywords = "Aerodynamic derivatives, Aircraft flight dynamics, Harmonic Balance Navier-Stokes equations, NASA Common Research Model, Unsteady aerodynamics, Aircraft, Flight dynamics, Flight simulators, Frequency domain analysis, Harmonic analysis, NASA, Time domain analysis, Aircraft maneuverability, Harmonic balance, Harmonic Balance method, Linear aerodynamic model, Research models, Unsteady aerodynamic load, Navier Stokes equations",
author = "J. Drofelnik and A.D. Ronch and {Sergio Campobasso}, M.",
year = "2018",
month = sep,
day = "9",
language = "English",
booktitle = "ICAS 18 Proceedings",
note = "31st Congress of the International Council of the Aeronautical Sciences ; Conference date: 09-09-2018 Through 14-09-2018",

}

RIS

TY - GEN

T1 - Feasibility of the Navier-Stokes harmonic balance method for modelling aircraft unsteady aerodynamics

AU - Drofelnik, J.

AU - Ronch, A.D.

AU - Sergio Campobasso, M.

PY - 2018/9/9

Y1 - 2018/9/9

N2 - Traditionally, the models of the unsteady aerodynamic loads needed for aircraft flight simulations have been estimated using the aerodynamic derivatives approach, which, using linear aerodynamic models, provides the influence of the aircraft motion rates on the aerodynamic forces and moments. With increasing aircraft maneuverability resulting in nonlinear unsteady flow regimes, however, the linearity assumption of the conventional aerodynamic derivatives approach makes the method questionable. Methods with higher reliability have been show to be achievable by using knowledge of the aircraft aerodynamic response to harmonic excitations. Prompted by the need of rapidly and accurately estimating such response, this study demonstrates the applicability of the nonlinear frequency-domain Navier-Stokes Harmonic Balance method for predicting periodic aircraft flows with low and high levels of nonlinearity. Using the NASA Common Research Model aircraft case study, it is found that the Harmonic Balance technology yields estimates of the unsteady forces differing negligibly from those of the standard time-domain Navier-Stokes method with a runtime analysis reduced by at least one order of magnitude over that of the time-domain approach. © 31st Congress of the International Council of the Aeronautical Sciences, ICAS 2018. All rights reserved.

AB - Traditionally, the models of the unsteady aerodynamic loads needed for aircraft flight simulations have been estimated using the aerodynamic derivatives approach, which, using linear aerodynamic models, provides the influence of the aircraft motion rates on the aerodynamic forces and moments. With increasing aircraft maneuverability resulting in nonlinear unsteady flow regimes, however, the linearity assumption of the conventional aerodynamic derivatives approach makes the method questionable. Methods with higher reliability have been show to be achievable by using knowledge of the aircraft aerodynamic response to harmonic excitations. Prompted by the need of rapidly and accurately estimating such response, this study demonstrates the applicability of the nonlinear frequency-domain Navier-Stokes Harmonic Balance method for predicting periodic aircraft flows with low and high levels of nonlinearity. Using the NASA Common Research Model aircraft case study, it is found that the Harmonic Balance technology yields estimates of the unsteady forces differing negligibly from those of the standard time-domain Navier-Stokes method with a runtime analysis reduced by at least one order of magnitude over that of the time-domain approach. © 31st Congress of the International Council of the Aeronautical Sciences, ICAS 2018. All rights reserved.

KW - Aerodynamic derivatives

KW - Aircraft flight dynamics

KW - Harmonic Balance Navier-Stokes equations

KW - NASA Common Research Model

KW - Unsteady aerodynamics

KW - Aircraft

KW - Flight dynamics

KW - Flight simulators

KW - Frequency domain analysis

KW - Harmonic analysis

KW - NASA

KW - Time domain analysis

KW - Aircraft maneuverability

KW - Harmonic balance

KW - Harmonic Balance method

KW - Linear aerodynamic model

KW - Research models

KW - Unsteady aerodynamic load

KW - Navier Stokes equations

M3 - Conference contribution/Paper

BT - ICAS 18 Proceedings

T2 - 31st Congress of the International Council of the Aeronautical Sciences

Y2 - 9 September 2018 through 14 September 2018

ER -