Changes in modern lifting-line methods for swept wings and viscous effects

Jose R. Chreim, Marcos M. Pimenta, Joao L. D. Dantas, Gustavo R. S. Assi

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

6 Citations (Scopus)

Abstract

A lifting-line formulation that makes possible the simulation of wings with sweep is presented; such formulation is based on modern adaptations of the classical theory and uses a nonlinear scheme to incorporate the influence of viscosity from real airfoil data on the wing lift and drag coefficients. The nonlinear scheme strictly satisfies the Pistolesi Boundary Condition over the control points at each iteration. The numerical accuracy of the method is verified through a standard procedure and the tool is consecutively validated against experimental data from several wings, each of which with a different planform. Satisfactory convergence rates, errors and uncertainties are obtained from the verification procedures and, for all wings, the agreement with experimental data are within a few percent. The results corroborate the reliability of the proposed formulation.

Original languageEnglish
Title of host publication2018 Applied Aerodynamics Conference
Place of PublicationReston, VA
DOIs
Publication statusPublished - 24 Jun 2018
Event36th AIAA Applied Aerodynamics Conference, 2018 - [state] GA, United States
Duration: 25 Jun 201829 Jun 2018

Conference

Conference36th AIAA Applied Aerodynamics Conference, 2018
Country/TerritoryUnited States
City[state] GA
Period25/06/1829/06/18

Keywords

  • lifting line theory
  • aerodynamics
  • lift coefficients
  • wing
  • swept wing
  • numerical methods
  • verification and validation (V&V)
  • computational fluid dynamic (CFD)
  • iterative methods

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