首页|Computational fluid dynamics simulations of respiratory airflow in human nasal cavity and its characteristic dimension study
Computational fluid dynamics simulations of respiratory airflow in human nasal cavity and its characteristic dimension study
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To study the airflow distribution in human nasal cavity during respiration and the characteristic parameters of nasal structure, three-dimensional, anatomically accurate representations of 30 adult nasal cavity models were recons-tructed based on processed tomography images collected from normal people. The airflow fields in nasal cavities were simulated by fluid dynamics with finite element software ANSYS. The results showed that the difference of human nasal cavity structure led to different airflow distribution in the nasal cavities and variation of the main airstream passing through the common nasal meatus. The nasal resistance in the regions of nasal valve and nasal vestibule accounted for more than half of the overall resistance. The characteristic model of nasal cavity was extracted on the basis of characteristic points and dimensions deduced from the original models. It showed that either the geometric structure or the airflow field of the two kinds of models was similar. The characte-ristic dimensions were the characteristic parameters of nasal cavity that could properly represent the original model in model studies on nasal cavity.
Nasal cavityCharacteristic dimensionThree-dimensional reconstructionNumerical simulation of flowfieldComputational fluid dynamicFinite element method
Jun Zhang、Yingxi Liu、Xiuzhen Sun、Shen Yu、Chi Yu
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State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China
Department of Otorhinolaryngology,the Second Affiliated Hospital of Dalian Medical University,Dalian 116027,China
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