Type of Document	Dissertation
Author	Boyd, Jr., David Douglas
Author's Email Address	d.d.boyd@larc.nasa.gov
URN	etd-080999-163154
Title	Rotor/Fuselage Unsteady Interactional Aerodynamics: A New Computational Model
Degree	PhD
Department	Aerospace and Ocean Engineering
Advisory Committee	Advisor Name Title Barnwell, Richard W. Committee Chair Devenport, William J. Committee Member Jones, Henry Committee Member Mason, William H. Committee Member Thomas, Russell H. Committee Member
Keywords	Computational Fluid Dynamics Rotorcraft Aerodynamics Unsteady Flow
Date of Defense	1999-07-27
Availability	unrestricted
Abstract A new unsteady rotor/fuselage interactional aerodynamics model has been developed. This model loosely couples a Generalized Dynamic Wake Theory (GDWT) to a Navier-Stokes solution procedure. This coupling is achieved using a newly developed unsteady pressure jump boundary condition in the Navier-Stokes model. The new unsteady pressure jump boundary condition models each rotor blade as a moving pressure jump which travels around the rotor azimuth and is applied between two adjacent planes in a cylindrical, non-rotating grid. Comparisons are made between predictions using this new model and experiments for an isolated rotor and for a coupled rotor/fuselage configuration.
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