Počet záznamů: 1
Simulation of acoustic pressure and flow velocity in human glottis
- 1.
SYSNO ASEP 0314079 Druh ASEP A - Abstrakt Zařazení RIV Není vybrán druh dokumentu Název Simulation of acoustic pressure and flow velocity in human glottis Překlad názvu Simulace akustického tlaku a rychlosti proudění v lidských hlasivkách Tvůrce(i) Šidlof, Petr (UT-L) RID
Chaigne, A. (FR)
Doaré, O. (FR)
Cadot, O. (FR)Zdroj.dok. Journal of the Acoustical Society of America. - : Acoustical Society of America - ISSN 0001-4966
Roč. 123, - (2008), s. 3664-3664Poč.str. 1 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova flow separation ; Navier-Stokes equations ; vocal folds Vědní obor RIV BI - Akustika a kmity CEP KJB200760801 GA AV ČR - Akademie věd CEZ AV0Z20760514 - UT-L (2005-2011) Anotace The pressure and velocity fields in coronal plane along the vibrating vocal folds were studied using a finite element mathematical model. The shapes of the vocal folds were specified according to data measured on excised human larynges in phonation position. The mathematical model of the flow is based on 2D incompressible Navier-Stokes equations adapted to deal with the time-variable shape of the domain, caused by vocal fold vibration. The numerical simulations allow to observe closely various flow features related to phonation - flow separation in the glottis, Coanda effect or vortex shedding. The numerical results were verified experimentally by Particle Image velocimetry (PIV) on a physical vocal fold model. In addition to acoustic, subglottal pressure and impact intensity measurements, flow velocity fields were recorded in the domain immediately above glottis. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2009
Počet záznamů: 1