Voxel-based simulation of flow and temperature in the human nasal cavity
Voxel-based simulation of flow and temperature in the human nasal cavity
复制标题
基于体素的人体鼻腔流量和温度模拟
DOI：
10.1080/10255842.2020.1836166
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发表时间：
2020
影响因子：
1.6
通讯作者：
Tanaka Gaku
中科院分区：
文献类型：
--
作者：
Kimura Shinya;Miura Shuta;Sera Toshihiro;Yokota Hideo;Ono Kenji;Doorly Denis J.;Schroter Robert C.;Tanaka Gaku
鼻腔是一个极其复杂的结构，因此数值预报鼻腔内气流的网格生成是非常耗时的。本文描述了一种基于体素的笛卡尔结构网格模型，该模型具有健壮和自动网格生成的特点，并对人体鼻腔内的气流和空调进行了模拟。使用健康成人鼻子的计算机断层扫描图像重建鼻腔的虚拟三维模型。然后使用能量方程的Neumann边界条件来模拟安静的静息式吸气流动，以充分解决流动和热传递。通过与数值模拟结果的比较，证实了鼻瓣后方高速射流和占据上腔前部的回流的气流形态以及气流和隔壁的温度分布的基本一致。
The nasal airway is an extremely complex structure, therefore grid generation for numerical prediction of airflow in the nasal cavity is time-consuming. This paper describes the development of a voxel-based model with a Cartesian structured grid, which is characterized by robust and automatic grid generation, and the simulation of the airflow and air-conditioning in an individual human nasal airway. Computed tomography images of a healthy adult nose were used to reconstruct a virtual three-dimensional model of the nasal airway. Simulations of quiet restful inspiratory flow were then performed using a Neumann boundary condition for the energy equation to adequately resolve the flow and heat transfer. General agreements of airflow patterns, which were a high-speed jet posterior to the nasal valve and recirculating flow that occupied the anterior part of the upper cavity, and temperature distributions of the airflow and septum wall were confirmed by comparingin-vivomeasurements with numerical simulation results.