真实人体呼吸道湍流仿真方法分析  

Analysis of Turbulent Simulation Method of Realistic Human Respiratory Airway

作　　者：崔岩 王玉龙 董榕波[2] 李蕾[3] 李海 马松云 刘银水[1] CUI Yan;WANG Yu-long;DONG Rong-bo;LI Lei;LI Hai;MA Song-yun;LIU Yin-shui(Huazhong University of Science and Technology, School of Mechanical Science & Engineering, Wuhan, Hubei 430074;The PLA 95829 Hospital, Wuhan, Hubei 430022;Union Hospital, Huazhong University of Science and Technology, Department of Pediatrics, Wuhan, Hubei 430030;RWTH Aachen University, Institute of General Mechanics, Faculty of Mechanical Engineering, Aachen, Germany 52062)

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074 [2]中国人民解放军95829医院,湖北武汉430022 [3]华中科技大学同济医学院附属协和医院儿科,湖北武汉430030 [4]亚琛工业大学机械工程学院通用力学研究所,德国亚琛52062

出　　处：《液压与气动》2022年第5期62-73,共12页Chinese Hydraulics & Pneumatics

基　　金：科技部国际合作司中国与斯洛文尼亚科技人员交流项目(BI-CN/20-22-002)。

摘　　要：计算流体力学被广泛用于可吸入药物在真实人体呼吸道区域沉积的研究,但存在计算效率不高的难点,无法满足临床应用所需。通过使用全结构化网格划分支气管树,应用k-ωSST、Transition SST、RSM-SSG和LES等湍流模型求解真实人体呼吸道流场,并与实验测量结果对比,验证不同湍流模型在计算真实人体呼吸道流场中的差异。在节约计算时间的同时,提出一套适合真实人体呼吸道模拟的快速且精确的流场仿真方法,并发现RSM-SSG湍流模型的计算结果与实验结果最为接近,为呼吸道计算流体力学仿真模拟的临床应用提供参考和依据。Computational fluid dynamics is widely being used in the study of the deposition of inhaled drug particles in the respiratory airway.However,due to the low computational efficiency,it can hardly meet the requirement of clinical applications.Respiratory airways are meshed by fully structured mesh.Various turbulence models(e.g.k-ωSST,Transition SST,RSM-SSG,and LES)are applied to solve the flow field.Compared with experimental measurement,limitations and accuracy of different turbulence models on solving the flow field of the airway are analyzed.Finally,a rapid and accurate simulation method is summarized while reducing the time of the simulation.It is found that the RSM-SSG turbulence model can provide the most promising results compared with experimental data,which will lay a good foundation for the clinical application of computational fluid dynamics of the respiratory airways.

关 键 词：真实人体呼吸道 计算流体力学 全结构化网格 湍流模型 

分 类 号：TH35[机械工程—机械制造及自动化]