A rigorous solution of the Navier-Stokes equations for unsteady viscous flow at high Reynolds numbers around oscillating airfoilsA method based on the Navier-Stokes equations was developed for analyzing the unsteady incompressible viscous flow around oscillating airfoils at high Reynolds numbers. The Navier-Stokes equations have been integrated in their classical Helmholtz vorticity transport equation form, and the instantaneous velocity field at each time step was determined by the solution of Poisson's equation. A refined finite element was utilized to allow for a conformable solution of the stream function and its first space derivatives at the element interfaces. A corresponding set of accurate boundary conditions was applied; thus obtaining a rigorous solution for the velocity field. The details of the computational procedure and examples of computed results describing the unsteady flow characteristics around the airfoil are presented.
Document ID
19750049878
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bratanow, T.
Aksu, H.
Spehert, T. (Wisconsin, University Milwaukee, Wis., United States)
Date Acquired
August 8, 2013
Publication Date
June 1, 1975
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 75-863
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference
Location: Hartford, CT
Start Date: June 16, 1975
End Date: June 18, 1975
Sponsors: American Institute of Aeronautics and Astronautics