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

Technical Report · Thu Jan 01 00:00:00 EST 1987

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