Date of Award
Fall 1980
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Mechanical Engineering
Committee Director
Osama A. Kandil
Committee Member
E. Carson Yates, Jr.
Committee Member
Gene L. Goglia
Call Number for Print
Special Collections; LD4331.E56C53
Abstract
A Nonlinear Hybrid-Vortex method (NHV-method) has been developed for predicting the aerodynamic characteristics of wings exhibiting side-edge separations. The present method is a coupline between vortex-panel and vortex-line methods. In the near-field calculations, vortex panels are used while in the far-field calculat1ons, vortex lines are used.
The wing and its free-shear layers are divided into planar quadrilateral panels having first-order vorticity distribution. The aerodynamic boundary conditions and continuity of the vorticity distributions are imposed at certain nodal points on the panels. An iterative technique is used to satisfy these conditions to obtain the vorticity distributions and the wake shape as well. To expedite the convergence of the iterative technique and to avoid excessive distortions of the free-vortex panels, good initial guesses of the shapes of the free vortex sheets, obtained from the Nonlinear Discrete-Vortex method (NDV method), were used.
This method is used to calculate the distributed and total steady loads on thin flat rectangular wings of different aspect ratios and at different angles of attack. The agreement between the calculated results and the available experimental data is satisfactory.
Rights
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DOI
10.25777/pkaj-9722
Recommended Citation
Chu, Li-Chuan.
"A Nonlinear Hybrid Vortex Method for Wings Having Side-Edge Separations"
(1980). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/pkaj-9722
https://digitalcommons.odu.edu/mae_etds/444