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On the generalized wake vortex sheet in small-disturbance problems

Author(s):
Torres, George L. S. ; Marques, Flavio D.
Total Authors: 2
Document type: Journal article
Source: AIAA AVIATION FORUM AND ASCEND 2024; v. N/A, p. 11-pg., 2024-01-01.
Abstract

The success of recent reduced-order aerodynamic models in predicting nonlinear aerodynamic effects depends on the solid fundamentals of classical theories. Hence, analytical and computational advancements improve our understanding of unsteady aerodynamics physics. This paper presents a generalization of the wake vortex sheet in small-disturbance problems. The classical Fourier coefficients in the thin airfoil theory are separated into the wake and kinematic influences. A numerical method based on the unsteady thin airfoil theory is developed to account for free roll-up vortex sheets, and the wake coefficients are calculated. The generalized theory is presented, and the proposed numerical model is validated against the classical results of Wagner and Theodorsen. (AU)

FAPESP's process: 23/15418-2 - Improved low-order modeling of unsteady airfoils with intermittent leading-edge vortex shedding and trailing-edge flow separation
Grantee:George Lucas Souto Torres
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 21/09224-5 - Development of a reduced-order aerodynamic model for the analysis of the aeroelastic response of airfoils at high angles of attack
Grantee:George Lucas Souto Torres
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)