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- W289167172 abstract "The aim of this contribution was to experimentally characterize the flow in the aneurysm of a full-scale medical phantom model for validation of companion numerical simulations. Due to its practical importance, a non-intrusive treatment of brain aneurysm attracts growing interest. To develop suitable treatment options, a better knowledge of the blood flow pattern in the complex geometry of aneurysms and cerebral vasculature is very important.To get information on the flow around the aneurysm, Laser Doppler Velocimetry (LDV) measurements had already been carried out by our group in a similar model at several cross-sections, considering a pulsating flow. As a complement, the present experimental series were carried out using large-field imaging measurement techniques.First, 2D-Particle Tracking Velocimetry (PTV) images were recorded and our in-house PTV-algorithm was optimized for the measurement configuration. The flow was seeded by fluorescent tracers and the excitation wave length was filtered out to avoid undesirable Mie scattering. In order to validate the PTV algorithm, the recorded images were also evaluated using a conventional cross-correlation method, like in Particle Image Velocimetry (PIV). Due to the different nature of the two evaluation methods, an interpolation of the Lagrangian (PTV) data into an Eulerian coordinate system (PIV) was required, in order to make a proper comparison between the two evaluation algorithms. The experimental setup, methods, results and conclusions are presented in this work." @default.
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- W289167172 date "2012-01-01" @default.
- W289167172 modified "2023-09-27" @default.
- W289167172 title "Investigation of the Velocity Field in a Full-Scale Artificial Martificial Medical Model" @default.
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