Laminar flow transition: A largeeddy simulation approach
Abstract
A vectorized, semiimplicit code was developed for the solution of the timedependent, three dimensional equations of motion in plane Poiseuille flow by the largeeddy simulation technique. The code is tested by comparing results with those obtained from the solutions of the OrrSommerfeld equation. Comparisons indicate that finitedifferences employed along the crossstream 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;
 OrrSommerfeld Equations;
 Three Dimensional Flow;
 TollmienSchlichting Waves;
 Turbulence Models;
 Fluid Mechanics and Heat Transfer