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000867487 041__ $$aEnglish
000867487 1001_ $$0P:(DE-Juel1)165948$$aLintermann, Andreas$$b0$$ufzj
000867487 245__ $$aApplication of Computational Fluid Dynamics Methods to Understand Nasal Cavity Flows
000867487 260__ $$aCham$$bSpringer International Publishing$$c2020
000867487 29510 $$aAll Around the Nose / Cingi, Cemal (Editor)   ; Cham : Springer International Publishing, 2020, Chapter 9 ; ISBN: 978-3-030-21216-2 ; doi:10.1007/978-3-030-21217-9
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000867487 520__ $$aComputational fluid dynamics methods enable to numerically predict complex flows with the help of computers. In the fields of Engineering and Physics they are already in use for decades to support design decissions and to get insight into complex physical phenomena. The simulation techniques have massively evolved over the past years and can nowadays be applied in medical context to analyze bio-fluidmechanical processes. Thanks to the continuous increase of computational power and parallelism as well as algorithmic advancements, accurate predictions of the flow in the nasal cavity are possible today. This chapter introduces the reader to the concepts of the computational fluid dynamics of the nose. It delivers some fundamentals on pre-processing medical image data, various techniques to generate computational meshes and gives an overview of methods to solve the governing equations of fluid motion. Thereby, advantages and disadvantages of the various approaches are explained. Subsequently, a variety of methods to analyze the flow and particle dynamics in the nasal cavity, ranging from streamline visualizations, pressure loss and temperature increase considerations, wall-shear stress and heat-flux distributions, to the analysis of the particle deposition behavior and transitional flow, is presented. The chapter concludes with how such methods can be used in clinical applications and elaborates how future developments might support decision making in medical pathways.
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