数值模拟鼻甲的切除对鼻腔内气体流场的影响  

Effect of Removing Turbinate on the Airflow Distribution in Nasal Cavity

作　　者：刘迎曦[1] 于申[1] 孙秀珍[2,1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116023 [2]大连医科大学附属第二医院耳鼻咽喉科,大连116023

出　　处：《生物医学工程学杂志》2008年第6期1315-1318,共4页Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目(10472025,10672036)

摘　　要：量化研究鼻腔结构的变化对鼻腔内气体流场分布的影响。通过CT图像对鼻腔结构进行三维重建并用有限元方法对气体流场进行数值分析。对重建的鼻腔模型的一侧,分别去掉部分中鼻甲和部分下鼻甲并用有限元方法再次进行数值分析,将得到的结果与原始模型进行比较。观察气体流场分布的变化,在两侧鼻腔的流量分布均有变化,在去掉部分鼻甲的一侧流场和气压的分布也有所改变。通过数值模拟,我们量化的显示了鼻腔结构的变化对鼻腔内气体流场分布的影响。The effect of variation of nasal structure on airflow distribution was investigated. Based on the CT images of the nose of a healthy female, a three-dimensional nasal model was developed. Two new nasal models were produced by removing part of inferior turbinate and part of middle turbinate in the left side of the original model. The numerical simulation and analysis for airflow field in the three nasal models was conducted by the finite element method. The simulation results from new models were compared with those from the original model. The airflow rate changed in the two sides of new nasal models. The airflow distribution and the pressure grades varied in the side of nasal model where part of inferior turbinate or part of middle turbinate was removed. The variation of nasal cavity structure will result in airflow redistribution in nasal cavity. The effect of removing turbinate on the airflow distribution in nasal cavity was described quantitatively.

关 键 词：鼻腔结构 三维重建 数值模拟 有限元方法 

分 类 号：R765[医药卫生—耳鼻咽喉科] R318.01[医药卫生—临床医学]