鼻流的开源CFD分析

Luka Balatinec, T. Uroić, H. Jasak
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引用次数: 0

摘要

鼻腔的复杂解剖结构和内部软组织构成了鼻腔,这使得概括和理解鼻腔呼吸的确切机制变得极其困难。深入了解与鼻流相关的现象可能对更好地理解影响呼吸的各种疾病至关重要,并可能有助于选择适当的医疗方法。最近,随着研究空气中颗粒的传播和过滤装置的影响变得非常重要,能够可视化鼻腔流动并进行数值分析可能被证明是一种宝贵的资源。本文介绍了一种用于分析鼻流的程序的详细概述。程序的每一步,从创建计算模型到气流模拟,都是基于免费和开源的工具,从而为研究鼻流提供了一个广泛可用的框架。该框架包括从计算机断层扫描(CT)或磁共振成像(MRI)扫描中提取计算模型、模型细化和使用OpenFOAM(用于计算流体动力学模拟的开源工具箱)进行的数值模拟。最后,将该框架应用于真实的鼻腔医学数据(CT扫描),对模拟结果进行了分析,并对相关数据进行了讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Open-Source CFD Analysis of Nasal Flows
The complex anatomical structure of the nose and the internal soft tissue, which forms the nasal cavity, make it extremely difficult to generalise and understand the exact mechanism of nasal breathing. Deeper insight into phenomena associated with nasal flows may prove vital for better understanding of various conditions that affect breathing and may help in the selection of appropriate medical treatments. More recently, as studying the transmission of airborne particles and the effect of filtration devices became of pronounced importance, having the ability to visualise nasal flows and perform numerical analyses may prove to be an invaluable resource.This paper presents a detailed overview of a procedure developed for analysis of nasal flows. Every step of the procedure, from creating the computational model to airflow simulation, is based on freely available and open-source tools, thus providing a widely available framework for investigation of nasal flows. The framework consists of extracting a computational model from computed tomography (CT) or magnetic resonance imaging (MRI) scans, model refinement and numerical simulations performed using OpenFOAM - an open-source toolbox for computational fluid dynamics simulations. Finally, the framework is used on real medical data (CT scans) of the nasal cavity, the resulting simulations are analysed and the relevant data is discussed.
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