Accession Number : AD1051109


Title :   Turbulent Flow Modification With Thermoacoustic Waves for Separation Control


Descriptive Note : Technical Report,01 Jun 2014,31 May 2017


Corporate Author : Florida State University Tallahassee United States


Personal Author(s) : Taira, Kunihiko ; Yeh,Chi-An ; Munday,Phillip M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1051109.pdf


Report Date : 24 Aug 2017


Pagination or Media Count : 51


Abstract : The objective of the proposed three-year study is to examine the effectiveness of high intensity acoustic waves emitted from a thermoacoustic actuator for active separation control of flow over a wall-mounted hump. A novel graphene-membrane based thermoacoustic actuator is considered as the source of acoustic waves. Carbon based materials have high conductivity which allows for extremely high power efficiency for sound generation. Furthermore, such membrane only requires alternating current to be applied, making it attractive from the point of view of implementation since the actuator can be surface-compliant with minimal weight additions.


Descriptors :   turbulent mixing , computational fluid dynamics , boundary layer , flow visualization , acoustic waves , free stream , heat transfer , vortex shedding , hydrodynamics , pressure distribution , reynolds number , turbulent flow , Thermoacoustics


Subject Categories : Fluid Mechanics
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE