RT Journal Article ID 12612b397e662c4e A1 Peters, Franz A1 Knotel, Marius T1 SEGMENTED MODELS AND PARTICLE IMAGE VELOCIMETRY (PIV) APPLIED TO FLOW ANALYSIS IN THE NASAL CAVITY JF Journal of Flow Visualization and Image Processing JO JFV YR 2011 FD 2012-02-27 VO 18 IS 3 SP 225 OP 239 K1 flow visualization K1 nasal cavity K1 Particle Image Velocimetry AB The nasal cavity is an example of a complex three-dimensional flow channel with limited accessibility for internal measurements. Clinical CT and MRT data together with CAD tools offer ways to create solid models of the cavity. Yet, due to limited transparency and the need of refractive index matching when using liquid as working fluid it remains difficult to collect velocity data from the cavity. In order to overcome this difficulty, we present an approach that uses segmented models. Different from other reported velocity measurements in models of the nasal cavity they allow operation on a 1:1 scale with air. PIV is applied straightforwardly at the cutting planes yielding velocity distribution and flow rate. Results are provided for two models representing the geometry of two individual nasal cavities at peak flow of 1 liter/s together with a flow rate/pressure characterization. It is concluded that the use of segmented models is an encouraging means for applying PIV to flow in complex 3D passages like nasal airways. PB Begell House LK https://www.dl.begellhouse.com/journals/52b74bd3689ab10b,3f55cba92315c238,12612b397e662c4e.html