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个人信息Personal Information
副教授
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：生物与纳米力学. 工程力学. 计算力学
办公地点：力学楼508
联系方式：13709863539
电子邮箱：yushen@dlut.edu.cn
健康国人鼻腔气流场数值模拟研究
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发表时间：2015-01-01
发表刊物：中国耳鼻咽喉头颈外科
期号：11
页面范围：545-547,562
ISSN号：1672-7002
摘要：[ABSTRACT]OBJECTIVETo explore the basic characters of the airflow-field in Chinese people's nasal cavity by computational fluid dynamics.METHODSThe three-dimensional, finite-element mesh were developed&nbsp;from Spiral CT imaging scans of nose of the 40 healthy Chinese people. Given the following spatial boundaries of the flow field: no-slip condition was imposed at the surface of the nasal airway walls; a standard atmosphere pressure condition was established at the inlet; a velocity vector was specified at the outlet (nasopharynx), which was obtained under the condition of aspiratory flow rate (12 L/min), the full Navier-Stokes and continuity equations were solved to obtain the airflow pattern.RESULTS1. The airflow passed mainly through left or right side of the nasal airway in the whole 40 cases (left 33, right 7),and the volume of air through the main-side is (320±28) ml while non-main-side (180±45) ml. 2. Airflow velocity: airflow of anterior nostrils, internal nostrils, the middle and inferior parts of the total meatus in the main-side were (5.01±2.12) m/s, (7.00±1.75) m/s, (5.08±1.55) m/s, (4.12±1.40) m/s respectively, and those in non-main-side were (2.01±0.94) m/s, (2.40±0.34) m/s, (1.99±1.0) m/s, (2.01±0.65) m/s respectively, which differences between the both sides were of statistical significance (allP<0.05); airflow of middle meatus, inferior meatus and olfactory cleft in the main-side were (2.08±0.43) m/s, (1.60±0.95) m/s, (1.64±0.80)m/s respectively, and those in non-main-side were (1.89±0.52) m/s, (1.49±0.89) m/s, (1.50±0.75) m/s respectively, which differences were significant statistically (allP>0.05); 3. The airflow form appeared to be linear in the middle and inferior parts of the nasal cavity. 4. Velocity in maxillary sinus cavity was almost 0 m/s.CONCLUSIONThe airflow passes mainly through the middle and inferior parts of the meatus with higher velocity in laminar form and airflow of middle meatus, inferior meatus and olfactory cleft are low and the velocity were slow. Besides, airflow in maxillary sinus cavity diffuses free mainly.
备注：新增回溯数据