东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Computational fluid dynamics simulations of respiratory airflow in human nasal cavity and its characteristic dimension study

ISSN号：0567-7718
期刊名称：《力学学报：英文版》
时间：0
分类：O35[理学—流体力学;理学—力学]
作者机构：[1]State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China, [2]Department of Otorhinolaryngology, the Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
相关基金：The project was supported by the National Natural Science Foundation of China （10472025; 10672036） and the Natural Science Foundation of Liaoning Province, China （20032109）. The English text was polished by Yunming Chen.Acknowledgments A special note of thanks is extended to radiologist Lai Shengyuan and all the doctors of ENT. Department, Second Affiliated Hospital of Dalian Medical University for their assistance in the design and prosecution of this research.

作者： Jun Zhang, Yingxi Liu, Xiuzhen Sun, Shen Yu, Chi Yu

关键词：鼻腔, 性能尺寸, 三维再造, 流体力学, 有限元方法, Nasal cavity , Characteristic dimension , Three-dimensional reconstruction , Numerical simulation of flowfield , Computational fluid dynamic , Finite element method

中文摘要：

为了在呼吸和特征期间在人的鼻音洞学习气流分发，鼻音的参数组织， 30 个成年鼻音洞模型的三维的、解剖地精确的代表基于从正常的人收集的处理断层摄影术图象被重建。在鼻音洞的气流领域被液体动力学与有限元素软件 ANSYS 模仿。结果证明人的鼻音洞结构的差别在鼻音洞和通过普通鼻音道的主要飞机飞行时所生之气流的变化导致了不同气流分发。在鼻音阀门和鼻音门厅的区域的鼻音抵抗说明了多于全面抵抗的一半。鼻音洞的典型模型根据从原来的模型推出的典型的点和尺寸被提取。它证明几何结构或二种模型的气流领域是类似的。典型尺寸是能适当地在鼻音洞上在模型研究代表原来的模型的鼻音洞的典型参数。

英文摘要：

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 characteristic dimensions were the characteristic parameters of nasal cavity that could properly represent the original model in model studies on nasal cavity.

同期刊论文项目