Laminar flow transition: A large-eddy simulation approach
Abstract
A vectorized, semi-implicit code was developed for the solution of the time-dependent, three dimensional equations of motion in plane Poiseuille flow by the large-eddy simulation technique. The code is tested by comparing results with those obtained from the solutions of the Orr-Sommerfeld equation. Comparisons indicate that finite-differences employed along the cross-stream direction act as an implicit filter. This removes the necessity of explicit filtering along this direction (where a nonhomogeneous mesh is used) for the simulation of laminar flow transition into turbulence in which small scale turbulence will be accounted for by a subgrid scale turbulence model.
- Publication:
-
Final Report
- Pub Date:
- February 1982
- Bibcode:
- 1982neri.rept.....B
- Keywords:
-
- Boundary Layer Transition;
- Computerized Simulation;
- Equations Of Motion;
- Laminar Flow;
- Transition Flow;
- Turbulent Flow;
- Continuity Equation;
- Finite Difference Theory;
- Incompressible Flow;
- Orr-Sommerfeld Equations;
- Three Dimensional Flow;
- Tollmien-Schlichting Waves;
- Turbulence Models;
- Fluid Mechanics and Heat Transfer