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- W2185133031 abstract "The study concerns the simulation of the flow field and particle deposition in the upper human respiratory system. The numerical simulations are conducted using large eddy simulation (LES) and a Lagrangian particle tracking technique. To validate the numerical methods, the average gas velocity at the centerline and at different cross-sections in a constricted tube is compared with the experimental data [1] and numerical data from Reynolds-averaged Navier–Stokes (RANS) equations coupled with low Reynolds number (LRN) κ-ω model [2] and LRN shear-stress transport (SST) κ-ω model [3] from literature. Through the comparison, it is concluded that the present methodology is suitable to simulate the laminar–transitional–turbulent flow. In addition, the particle deposition efficiency in the idealized mouth-throat model is compared with data from the literature [2]. It demonstrates that the methodology can be used to predict particle deposition in the human oral airway. The main properties of the flow field in the idealized geometry are captured as other numerical simulation [2], but a small recirculation zone was observed in the posterior side of pharynx and laryngeal jet is observed to impinge on the anterior side of trachea wall in the present numerical result. The secondary vortices are attributed to the laryngeal jet profile." @default.
- W2185133031 created "2016-06-24" @default.
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- W2185133031 date "2010-01-01" @default.
- W2185133031 modified "2023-09-25" @default.
- W2185133031 title "Large Eddy Simulation of Flow-Field and Micro-Particle Deposition in an Idealized Mouth-Throat" @default.
- W2185133031 hasPublicationYear "2010" @default.
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