Quantifying nonlinearity in planar supersonic potential flows

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dc.contributor.author Meijer, Marius-Corne
dc.contributor.author Dala, L.
dc.date.accessioned 2017-01-30T05:29:48Z
dc.date.issued 2017-03
dc.description.abstract An analysis is presented which allows the engineer to quantitatively estimate the validity bounds of aerodynamic methods based in linear potential flows a-priori. The development is limited to quasi-steady planar flows with attached shocks and small body curvature. Perturbation velocities are parametrised in terms of Mach number and flow turning-angle by means of a series-expansion for flow velocity based in the method of characteristics. The parametrisation is used to assess the magnitude of nonlinear term-groupings relative to linear groups in the full potential equation. This quantification is used to identify dominant nonlinear terms and to estimate the validity of linearising the potential flow equation at a given Mach number and flow turning angle. Example applications include the a-priori estimation of the validity bounds for linear aerodynamic models for supersonic aeroelastic analysis of lifting surfaces and panels. en_ZA
dc.description.department Mechanical and Aeronautical Engineering en_ZA
dc.description.embargo 2017-06-30
dc.description.librarian hb2017 en_ZA
dc.description.uri http://journals.cambridge.org/action/displayJournal?jid=AFR en_ZA
dc.identifier.citation Meijer, MC & Dala, L 2017, 'Quantifying nonlinearity in planar supersonic potential flows', Aeronautical Journal, vol. 121, no. 1237, pp. 372-394.. en_ZA
dc.identifier.issn 0001-9240 (print)
dc.identifier.issn 2059-6464 (online)
dc.identifier.uri http://hdl.handle.net/2263/58667
dc.language.iso en en_ZA
dc.publisher Cambridge University Press en_ZA
dc.rights © Cambridge University Press 20xx en_ZA
dc.subject Quantifying nonlinearity en_ZA
dc.subject Aerodynamic methods en_ZA
dc.subject Linear potential flows en_ZA
dc.title Quantifying nonlinearity in planar supersonic potential flows en_ZA
dc.type Postprint Article en_ZA


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