Mean Velocity and Turbulence Measurements of Flow Around a 6:1 Prolate Spheroid
Abstract
Investigations of three-dimensional flow around a 6:1 prolate spheroid model were conducted in the separation and near wake regions along the leeward side. Mean velocity flow field measurements, at alpha = 10 C and 15 deg and at Re=1,300,000 were obtained at four axial locations along the afterbody. Boundary layer profiles and Reynolds shear stress measurements were obtained at two axial location, with alpha = 10 deg and Re=4,000,000. Results indicate vortical flow along the surface of the body, growing a strength with increasing Reynolds number and increasing angle of attack. Skewing of the three-dimensional boundary layer is seen in the profiles, with surface shear stress direction lagging the local free-stream velocity direction. Turbulence measurements show that distribution of Reynolds stress quantities is different than two- dimensional flow over a flat plate. Estimates show that eddy viscosity is not isotropic. The flow model predicts high values for the mixing length. (mm)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1990
- Accession Number
- ADA229493
Entities
People
- K. M. Barber
- R. L. Simpson
Organizations
- Virginia Tech