Development and application of the time-domain panel method
Abstract
The purpose of this thesis is to develop and demonstrate the utility of the Time Domain Panel (TDP) algorithm for wing design and analysis. This is a linear unsteady aerodynamic method for simulating loads on an oscillating wing in subsonic compressible flow. This time stepping simulation is based on Guderley's integral formulae. Other current work, which is similar in application, is either based on computationally expensive non-linear finite difference schemes, or is based on inverse transforms of linear harmonic aerodynamic loads. The TDP method is a direct integral (panel) method which has the efficiency of linear aerodynamics but is in a suitable form for developing simulation models with non-linear structural dynamics or non-linear controls. This is a linear time stepping method which falls between linear harmonic aerodynamic methods and higher order non-linear time stepping aerodynamic methods. The developmental details in numerically implementing Guderley's integral formula is given here. Several applications are presented in order to provide confidence that the TDP method is practical and numerically accurate.
Degree
Ph.D.
Advisors
Williams, Purdue University.
Subject Area
Aerospace materials
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