A numerical simulation of a patient’s nasal airflow was developed via computational fluid dynamics. Accordingly, computerized tomography scans of a patient with septal deviation and allergic rhinitis were obtained. The three-dimensional (3D) nasal model was designed using InVesalius 3.0, which was then imported to (computer aided 3D interactive application) CATIA V5 for modification, and finally to analysis system (ANSYS) flow oriented logistics upgrade for enterprise networks (FLUENT) to obtain the numerical solution. The velocity contours of the cross-sectional area were analyzed on four main surfaces: the vestibule, nasal valve, middle turbinate, and nasopharynx. The pressure and velocity characteristics were assessed at both laminar and turbulent mass flow rates for both the standardized and the patient’s model nasal cavity. The developed model of the patient is approximately half the size of the standardized model; hence, its velocity was approximately two times more than that of the standardized model.

中文翻译：

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鼻中隔偏曲和过敏性鼻炎患者的鼻气流

通过计算流体动力学开发了患者鼻气流的数值模拟。因此，获得了具有间隔偏差和变应性鼻炎的患者的计算机断层扫描。使用InVesalius 3.0设计了三维（3D）鼻腔模型，然后将其导入到（计算机辅助3D交互式应用程序）CATIA V5中进行修改，最后导入到企业网络分析系统（ANSYS）面向流程的物流升级（FLUENT）获得数值解。在四个主表面上分析横截面积的速度轮廓：前庭，鼻瓣，中鼻甲和鼻咽。对于标准鼻腔模型和患者鼻腔模型，在层流和湍流质量流率下都评估了压力和速度特性。已开发的患者模型大约是标准化模型大小的一半；因此，它的速度大约是标准化模型速度的两倍。