Solution of the three-dimensional Navier-Stokes equations for a turbulent horseshoe vortex flow. Final report, 1 October 1985-30 September 1986

Technical Report · Wed Dec 31 23:00:00 EST 1986

OSTI ID:6867119

Buggelin, R C; Brilery, W R; McDonald, H

The problem of three-dimensional turbulent horseshoe vortex/corner flow is investigated numerically. Solutions of the compressible Reynolds-averaged Navier-Stokes equations are computed using a linearized block-implicit scheme with Douglas-Gunn splitting. Solutions are computed using both two-equation (k-epsilon) and algebraic mixing-length turbulence models, with grid distributions that provide resolution of the viscous sublayer regions. These computed results are displayed graphically and compared with recent experimental measurements. There is good qualitative agreement between computed and measured mean flow velocities, especially near the saddle-point separation line. The computed corner flow has a multiple vortex structure. There are quantitative differences in details of the weak corner flows downstream of the leading edge, which may be attributable to the turbulence model used and/or numerical error. Convergence required approximately 150 iterations using a 60x50x40 grid (120,000 points) and required about 2.5 hours of CRAY-XMP run time.

• Research Organization: Scientific Research Associates, Inc., Glastonbury, CT (USA)
• OSTI ID: 6867119
• Report Number(s): AD-A-176370/5/XAB; SRA-R-87-920027-F
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ALGORITHMS
DIFFERENTIAL EQUATIONS
DIFFUSION
DISTRIBUTION
ELECTRODES
EQUATIONS
ERRORS
FLUID FLOW
GRAPHS
GRIDS
MATHEMATICAL LOGIC
MATHEMATICS
NAVIER-STOKES EQUATIONS
NUMERICAL ANALYSIS
PARTIAL DIFFERENTIAL EQUATIONS
THREE-DIMENSIONAL CALCULATIONS
TURBULENCE
TURBULENT FLOW
VELOCITY
VISCOSITY
VORTEX FLOW
VORTICES