A Standard Test Case for a Low Speed, Turbulent Junction Vortex Flow
Abstract
The main flow structure upstream, around, and within a turbulent junction or horseshoe vortex and extending into the wake is reported for an incompressible, subsonic flow. The flow is generated by placing a streamlined (teardrop shaped) cylinder normal to a flat surface in a relatively thick boundary layer. The flow is a particular case in the broad class of complex, separated, three-dimensional turbulent flows. The total flow field, including the flow through separation and the vortex, and extending into the near wake, has been documented with mean velocity, static pressure, and total pressure measurements using a very carefully calibrated Prandtl-type, biconic five-hole probe. Extensive floor static pressure measurements, emphasizing the region of the vortex system, and static pressure measurements on the cylinder surface are also reported. Flow visualizations for the floor flow and the body surface are reported. Measurements of the primitive variables of velocity and pressure are reported on all surfaces bounding the region of the vortex flow. This is consistent with providing boundary conditions on all surfaces surrounding the solution domain for the implementation of a numerical solver for the elliptic, turbulent, three-dimensional Navier-Stokes equations. Measurements of these same variables are provided on one transverse plane and one streamwise plane within the flow field itself to allow for comparisons between the measured and calculated flow variables.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1988
- Accession Number
- ADA201213
Entities
People
- C. M. Kim
- F. J. Pierce
- J. Felix Shin
- M. D. Harsh
- S. K. Nath
Organizations
- Virginia Tech