Accession Number : AD0638727

Title :   BOUNDARY-LAYER OSCILLATIONS OVER A RESONANT SURFACE.

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s) : Rhines,Peter B. ; Mollo-Christensen,Erik L.

Report Date : FEB 1966

Pagination or Media Count : 46

Abstract : The boundary layer is observed in low-speed flow over a dispersively-coupled system of acoustic resonators. It is found that oscillations in the laminar layer are strongly excited by this model of a passive, flexible, wall. The 'geometry' of this process differs from that expected with a real membrane, however, due to the details of the wall construction. A different set of laminar oscillations dominates the flow over the middle of the surface, producing turbulence in a manner controlled by the spanwise variations in the wall. The importance of the nature of this transition process to other shearing flows is discussed. (Author)

Descriptors :   (*BOUNDARY LAYER, *OSCILLATION), SURFACES, RESONANCE, WALLS, ACOUSTICS, FLEXIBLE STRUCTURES, TURBULENCE, SHEAR STRESSES, AEROELASTICITY

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE