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中文摘要：
一条计算液体动力学(CFD ) 途径被用来在一条人的上面的航线以内学习呼吸气流动力学。从使分叉增加两倍的鼻音洞，咽，喉和气管由航线组成的航线模型基于一个健康志愿者和 Weibel 模型的 CT 图象被造。整个上面的航线的流动特征是在呼吸周期的任何时间水平描述的份量上。呼吸流动的模拟结果与临床的措施显示出好同意，在文学的试验性、计算的结果。空气主要在普通、中间、劣等的鼻音道通过鼻音洞的地板。更高的航线抵抗和墙砍压力在以后的鼻音阀门上被散布。尽管咽，喉和支气管的航线经历低砍压力，高相对砍，是著名的压力在会厌软骨和支气管的分叉的墙上被散布。而且，正常、反常的航线的二维的液体结构相互作用模型被造在各种各样的解剖模型讨论导致流动的变丑。结果证明在正常航线的墙变丑是相对小的。
英文摘要：
A computational fluid dynamics （CFD） approach is used to study the respiratory airflow dynamics within a human upper airway. The airway model which consists of the airway from nasal cavity, pharynx, larynx and trachea to triple bifurcation is built based on the CT images of a healthy volunteer and the Weibel model. The flow character- istics of the whole upper airway are quantitatively described at any time level of respiratory cycle. Simulation results of respiratory flow show good agreement with the clinical mea- sures, experimental and computational results in the litera- ture. The air mainly passes through the floor of the nasal cavity in the common, middle and inferior nasal meatus. The higher airway resistance and wall shear stresses are distrib- uted on the posterior nasal valve. Although the airways of pharynx, larynx and bronchi experience low shear stresses, it is notable that relatively high shear stresses are distrib- uted on the wall of epiglottis and bronchial bifurcations. Besides, two-dimensional fluid-structure interaction models of normal and abnormal airways are built to discuss the flow-induced deformation in various anatomy models. The result shows that the wall deformation in normal airway is relatively small.
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