Suscripción a Biblioteca: Guest
TSFP DL Home Archivos Comité Ejecutivo

2D/3C MODEL OF LARGE SCALE STRUCTURES IN TURBULENT PLANE COUETTE FLOW

Dennice Gayme
Control and Dynamical Systems, California Institute of Technology 1200 E. California Blvd. Pasadena, California, 91125, USA

Beverley J. McKeon
Department of Aeronautics, Imperial College London, SW7 2AZ, UK; Graduate Aerospace Laboratories California Institute of Technology Pasadena, CA 91125, USA

Antonis Papachristodoulou
Department of Engineering Science, University of Oxford Parks Road, Oxford 0X1 3PJ, United Kingdom

John C. Doyle
Control and Dynamical Systems, California Institute of Technology 1200 E. California Blvd, Pasadena, California, 91125, USA

Sinopsis

A slreamwise constant projection of the Navier Stokes equations forced by small-amplitude Gaussian noise is simulated. It is found that this model captures salient features of fully developed turbulent plane Couette flow. In particular, the nonlinearity in the model captures the mathematical mechanism that results in the characteristic shape of the turbulent velocity profile. Further, using Taylor's hypothesis the model also generates large scale streaky structures, that closely resemble large scale features that have been observed in DNS and experiments.