Publication Date:
2019-07-27
Description:
A finite-difference machine code is brought to bear on the wake-vortex problem in the quasi-cylindrical boundary-layer approximation. A turbulent-energy model containing new features is developed. Parameters of the model are evaluated by comparison of calculated velocities and turbulent intensities with measurements in an axisymmetric wake. Comparisons are made with a previous calculation of the decay of an isolated vortex and with wind tunnel and flight measurements in trailing vortices. A self-similar solution develops at large axial distance that decays with the square root of distance. A slower decay occurs in the preceding transition region.
Keywords:
AERODYNAMICS
Type:
AIAA PAPER 72-989
,
American Institute of Aeronautics and Astronautics, Atmospheric Flight Mechanics Conference; Sept. 11-13, 1972; Palo Alto, CA
Format:
text
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