Detailed flow patterns in the nasal cavity
Detailed flow patterns in the nasal cavity
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DOI：
10.1152/jappl.2000.89.1.323
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发表时间：
2000-07-01
影响因子：
3.3
通讯作者：
Wexler, AS
中科院分区：
文献类型：
--
作者：
Kelly, JT;Prasad, AK;Wexler, AS
人类鼻腔过滤和调节吸入的空气，同时提供嗅觉功能。由于鼻腔的复杂几何结构，对鼻腔气流模式的详细实验研究受到限制。在这项工作中，粒子图像测速法被用来确定二维瞬时速度矢量场在整个鼻腔的模型，受到125毫升/秒的非振荡流率的平行平面。该模型是由26个计算机断层扫描通过使用快速原型技术制造的，是人类右侧鼻腔的比例复制品。得到的矢量图显示，气流为层流，最高速度区域位于鼻阀和下气道。嗅觉区相对较低的流量似乎可以保护嗅球免受颗粒污染物的影响。在鼻道中也观察到低流量，其主要功能一直是争论的主题。对连续记录的数据进行比较表明，流动是稳定的。
The human nasal cavity filters and conditions inspired air while providing olfactory function. Detailed experimental study of nasal airflow patterns has been limited because of the complex geometry of the nasal cavity. In this work, particle image velocimetry was used to determine two-dimensional instantaneous velocity vector fields in parallel planes throughout a model of the nasal cavity that was subjected to a nonoscillatory flow rate of 125 ml/s. The model, which was fabricated from 26 computed tomography scans by using rapid prototyping techniques, is a scaled replica of a human right nasal cavity. The resulting vector plots show that the flow is laminar and regions of highest velocity are in the nasal valve and in the inferior airway. The relatively low flow in the olfactory region appears to protect the olfactory bulb from particulate pollutants. Low flows were also observed in the nasal meatuses, whose primary function has been the subject of debate. Comparison of sequentially recorded data suggests a steady flow.