Suscripción a Biblioteca: Guest
Ninth International Symposium on Turbulence and Shear Flow Phenomena
June 30 - July 3, 2015, University of Melbourne, Australia

DOI: 10.1615/TSFP9

PRELIMINARY ANALYSIS OF PERMEABLE COATINGS FOR TURBULENT DRAG REDUCTION

pages 517-522
DOI: 10.1615/TSFP9.870
Get accessGet access

SINOPSIS

This study focuses on permeable coatings as a form of passive flow control. A simplified model is proposed to analyse the qualitative effect of the coating's thickness and permeability on drag reduction. For small permeability, the reduction is linear with the length scale of the streamwise permeability. For larger permeability, a degradation mechanism is investigated that depends critically on the geometric mean of the streamwise and wall-normal permeabilities. For a streamwise-to-wall-normal permeability ratio of order 10-100 the maximum drag reduction is predicted to be 15-25%.

Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones Precios y Políticas de Suscripcione Begell House Contáctenos Language English 中文 Русский Português German French Spain