Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTAL CHARACTERIZATION OF ARTIFICIALLY-GENERATED TOLLMIEN-SCHLICHTINGWAVES
Submission Author:
Christian Bresci , SP
Co-Authors:
Christian Bresci, Matheus Maia Beraldo, Filipe Amaral, Juan Carlos Serrano Rico, Marcello Augusto Faraco de Medeiros
Presenter: Marcello Augusto Faraco de Medeiros
doi://10.26678/ABCM.COBEM2019.COB2019-1318
Abstract
Tollmien-Schlichting (TS) waves are the main mechanism on the laminar-to-turbulent boundary-layer transition. Its experimental demonstration was achieved with the advent of low-turbulence level wind-tunnels. A first attempt to characterize artificially-generated TS waves was successfully performed in the new Low Acoustic Noise and Turbulence Level wind-tunnel at USP-EESC in order to demonstrated its ability on performing quality boundary-layer stability experiments. Although the perturbations utilized were non-linear and three-dimensional, it was possible to characterize the TS wave eigenfunction and growth-rate.
Keywords
Boundary Layer Transition, Tollmien-Schlichting waves, hot wire anemometry
