000008753 001__ 8753
000008753 005__ 20141204083517.0
000008753 04107 $$aeng
000008753 046__ $$k12/05/2014
000008753 100__ $$aBelka, M.
000008753 24500 $$aMEASUREMENT OF AIRFLOW IN TRACHEA USING PARTICLE IMAGE VELOCIMETRY AND LASER-DOPPLER ANEMOMETRY

000008753 24630 $$n20.$$pEngineering Mechanics 2014
000008753 260__ $$bBrno University of Technology- Institute of Solid Mechanics, Mechatronics and Biomechanics
000008753 506__ $$arestricted
000008753 520__ $$2eng$$aA lot of attention has been given to the study of airflow in human respiratory airways recently, because airflow characteristics greatly influence transport and deposition of the particles in human lungs. In this paper the aerodynamics occurring in upper part of human trachea is investigated. Laser optical measurements were performed in a semirealistic model of the upper airways, from mouth to 4th generation of branching. The model was attached downstream to a generator of oscillating flow, which was set to sinusoidal flow for resting conditions with mean Reynolds number Re = 1414. Flow characteristics were measured using laser optical methods, in particular Particle Image Velocimetry and Laser-Doppler Anemometry. We found that the flow in trachea was biased to the front wall due to the laryngeal jet. The flow became turbulent during high velocity phases of the sinusoidal flow and generated turbulence intensity was observed up to 20 %. These data can help to understand the complicated flow in trachea and its implications in particle deposition studies.

000008753 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000008753 653__ $$aParticle image velocimetry, Laser-Doppler anemometry, Model of human lungs, Flow measurement, Laryngeal jet.

000008753 7112_ $$aEngineering Mechanics 2014$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2014
000008753 720__ $$aBelka, M.$$iJedelsky, J.$$iBoiron, O.$$iBailly, L.$$iBertrand, E.$$iZaremba, M.$$iMaly, M.$$iLizal, F.
000008753 8560_ $$ffischerc@itam.cas.cz
000008753 8564_ $$s409687$$uhttps://invenio.itam.cas.cz/record/8753/files/6-Belka-CD.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 6.
000008753 962__ $$r70
000008753 980__ $$aPAPER