Computational aeroacoustics of human phonation

0384708 - ÚT 2013 RIV CZ eng C - Conference Paper (international conference)
Šidlof, Petr - Zoerner, S.
Computational aeroacoustics of human phonation.
Experimental Fluid Mechanics 2012. Liberec: Technical University of Liberec, 2012 - (Vít, T.; Dančová, P.; Novotný, P.), s. 669-676. ISBN 978-80-7372-912-7.
[Experimental Fluid Mechanics 2012 /7./. Hradec Králové (CZ), 20.11.2012-23.11.2012]
R&D Projects: GA ČR(CZ) GAP101/11/0207
Institutional research plan: CEZ:AV0Z20760514
Keywords : vocal folds * computational aeroacoustics * phonation
Subject RIV: BI - Acoustics

The current paper presents a CFD model of flow past vibrating vocal folds coupled to an acoustic solver, which calculates the sound sources from the flow field in a hybrid approach. The CFD model is based on the numerical solution of 3D Navier-Stokes equations on a time-dependent domain, solved by cell-centered finite volume method. To capture the fine turbulent scales important for the acoustic source calculations, the equations are discretized and solved on large computational meshes up to 3.2M elements. The CFD simulations were run in parallel using domain decomposition method and OpenMPI implementation of the MPI standard. Aeroacoustic simulations are calculated in a separate step by Lighthill’s acoustic analogy, which determines the acoustic sources based on the fluid field. This is done with the research code CFS++ which employs the finite element method (FEM).
Permanent Link: http://hdl.handle.net/11104/0216910