Numerical simulation of soft palate movement and airflow in human upper airway by fluid-structure interaction method

Xiuzhen Sun; Chi Yu; Yuefang Wang; Yingxi Liu

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Numerical simulation of soft palate movement and airflow in human upper airway by fluid-structure interaction method

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摘要

In this paper, the authors present airflow field characteristics of human upper airway and soft palate move-ment attitude during breathing. On the basis of the data taken from the spiral computerized tomography images of a healthy person and a patient with Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS), three-dimensional models of upper air-way cavity and soft palate are reconstructed by the method of surface rendering. Numerical simulation is performed for airflow in the upper airway and displacement of soft palate by fluid-structure interaction analysis. The reconstructed three-dimensional models precisely preserve the original config-uration of upper airways and soft palate. The results of the pressure and velocity distributions in the airflow field are quantitatively determined, and the displacement of soft palate is presented. Pressure gradients of airway are lower for the healthy person and the airflow distribution is quite uniform in the case of free breathing. However, the OSAHS patient remarkably escalates both the pressure and velocity in the upper airway, and causes higher displacement of the soft palate. The present study is useful in revealing pathogenesis and quantitative mutual relationship between configuration and function of the upper airway as well as in diagnosing diseases related to anatomical structure and function of the upper airway.

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《力学学报：英文版》 |2007年第004期|359-367|共9页
作者
Xiuzhen Sun; Chi Yu; Yuefang Wang; Yingxi Liu;
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作者单位

State Key Lab.of Struct. Anal. For Ind. Equip.,Dalian University of Technology,Dalian 116024, China;

The Second Affiliated Hospital, Dalian Medical University,Dalian 116027, China;

State Key Lab.of Struct. Anal. For Ind. Equip.,Dalian University of Technology,Dalian 116024, China;

The Second Affiliated Hospital, Dalian Medical University,Dalian 116027, China;

State Key Lab.of Struct. Anal. for Ind. Equip.,Dalian University of Technology,Dalian 116024, China;

State Key Lab.of Struct. Anal. For Ind. Equip.,Dalian University of Technology,Dalian 116024, China;

The Second Affiliated Hospital, Dalian Medical University,Dalian 116027, China;

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原文格式 PDF
正文语种 chi
中图分类力学;
关键词
Obstructive sleep apnea-hypopnea syndrome -Upper airway · Soft palate · Three-dimensional finite element reconstruction · Fluid-structure interaction ·Numerical simulation;

机译：阻塞性睡眠呼吸暂停低通气综合征-上呼吸道·软Soft·三维有限元重建·流固耦合·数值模拟;

Numerical simulation of soft palate movement and airflow in human upper airway by fluid-structure interaction method

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