Title page for ETD etd-080999-163154


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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