Vortical perturbations in shear flow, scattered at a hard wall : pressure release wall transition

S.W. Rienstra, D.K. Singh

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

An analytically exact solution for the problem of low Mach number (i.e. incompressible) incident vorticity scattering at a hard - to - pressure release (Z = 0 ) wall transition is obtained using the Wiener-Hopf method. Harmonic vortical perturbations of inviscid linear shear flow are scattered at the wall transition, which results in a pressure-velocity field which is qualitatively different for low shear and high shear cases. The incompressible field produces an acoustic outer field, which can be determined for the low shear case, including a $U^4_0$ relation for the radiated power. The similar behaviour of this Z = 0 solution when compared with the asymptotic behaviour of the solution for finite impedance case confirms the validity of this last solution.
Originele taal-2Engels
Titel22nd International Congress on Sound and Vibration (ICSV22, Florence, Italy, July 12-16, 2015)
Plaats van producties.l.
UitgeverijInternational Institute of Acoustics and Vibration
Pagina's1-8
StatusGepubliceerd - 2015
Evenement22nd International Congress on Sound and Vibration (ICSV 22), July 12-16, 2015, Florence, Italy - Florence, Italië
Duur: 12 jul 201516 jul 2015
http://iiav.org/icsv22/

Congres

Congres22nd International Congress on Sound and Vibration (ICSV 22), July 12-16, 2015, Florence, Italy
Verkorte titelICSV 22
LandItalië
StadFlorence
Periode12/07/1516/07/15
Ander22nd International Congress on Sound and Vibration
Internet adres

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  • Citeer dit

    Rienstra, S. W., & Singh, D. K. (2015). Vortical perturbations in shear flow, scattered at a hard wall : pressure release wall transition. In 22nd International Congress on Sound and Vibration (ICSV22, Florence, Italy, July 12-16, 2015) (blz. 1-8). International Institute of Acoustics and Vibration.