正版 人体呼吸健康研究:N95过滤式面罩呼吸器的佩戴性能:wearing

Chapter 1 Introduction
1.1 Background
1.2 Motivation
1.3 Outline
Chapter 2 Study of the filtration performance of multi-fiber filters
2.1 Introduction
2.2 Model of multi-fiber filters
2.2.1 Geometric model and simulation method of multi-fiber filters
2.2.2 Model validation
2.3 Filtration efficiency and its optimization
2.3.1 Comparison of filtration performance between parallel and staggered designs
2.3.2 Filtration efficiency at different face velocities and particle diameters
2.3.3 Filtration performance of layered filters with the same total SVF
2.3.4 Optimization of pressure drop and filtration efficiency
2.4 Conclusion
References
Chapter 3 Study of particle rebound and deposition on fiber surface
3.1 Introduction
3.2 Models of flow field and particle movement
3.2.1 Flow field and particle movement
3.2.2 Particle rebound model
3.3 Particle transport and deposition
3.3.1 Effect of particle rebounds on particle deposition
3.3.2 Effects of face velocity on particle deposition
3.3.3 Effects of particle diameter on particle deposition
3.3.4 Filtration efficiency of a single fiber
3.4 Conclusion
References
Chapter 4 Investigation of the flow-field in the upper respiratory system when wearing N95 FFR
4.1 Introduction
4.2 Modeling of full breathing cycles
4.2.1 Flow field reverse modeling
4.2.2 CFD simulation of a full breathing cycle
4.3 Flow field of a full breathing cycle
4.3.1 Flow characteristics of a full breathing cycle
4.3.2 CO2 volume fraction
4.3.3 Temperature distribution inside FFR cavity
4.3.4 Pressure and wall shear stress inside upper respiratory airway
4.4 Discussion
4.5 Conclusion
References
Chapter 5 Investigation of water vapor condensation on the inner surface of N95 FFR
5.1 Introduction
5.2 CFD modeling of water vapor condensation
5.2.1 Model of water vapor condensation
5.2.2 CFD-setup and boundary conditions of water vapor condensation
5.3 Water vapor condensation on the inner surface of N95 FFR
5.3.1 Effects of different environmental temperatures
5.3.2 Effects of different breathing velocities
5.3.3 Effects of different breathing frequencies
5.4 Discussion
5.5 Conclusion
References
Chapter 6 Effect of vapor condensation on micro-climate in the deadspace of N95 FFR
6.1 Introduction
6.2 CFD modeling of vapor condensation
6.2.1 Model of vapor condensation
6.2.2 CFD-setup and boundary conditions of vapor condensation
6.2.3 FFR performance and vapor condensation distribution
6.3 Experiment of micro-climate inside N95 FFR
6.3.1 Experiment of temperature and relative humidity measuring inside FFR
6.3.2 Experiment of bacteria accounting on the inner surface of FFR
6.4 Conclusion
References
Chapter 7 Investigation of movement characteristics and respiratory deposition of indoor cigarette particles
7.1 Introduction
7.2 Model of particle movement and respiratory deposition
7.2.1 Description of room, human and particles system
7.2.2 CFD model of cigarette particles deposition
7.2.3 PM2.5 measurement
7.3 Flow field and cigarette particles deposition
7.4 Conclusion
References
Chapter 8 An improved FFR design with a ventilation fan: CFD simulation and validation
8.1 Introduction
8.2 Improved FFR design and CFD simulation
8.2.1 Improved FFR design
8.2.2 Simulation method of flow field in FFR
8.3 Performance of the ventilation fan and its effects
8.3.1 Flow characteristics of the ventilation fan
8.3.2 Effects of fan orientation
8.3.3 Experiment on temperature of headform and FFR
8.4 Conclusion
References
Chapter 9 Design of the FFR with an intelligent control fan
9.1 Introduction
9.2 Improved FFR design
9.3 Design of intelligent control system
9.4 Test results of FFR performance
9.5 Discussion
9.6 Conclusion
References
Chapter 10 Study of contact characteristics between a respirator and a headform
10.1 Introduction
10.2 Models and methods of contact characteristics between a respirator and a headform
10.2.1 Geometric models of headform and respirator
10.2.2 Simulation methods of contact characteristics
10.3 Contact characteristics between a respirator and a headform
10.4 Conclusion
References
Chapter 11 The effects of facial expressions on respirators fit
11.1 Introduction
11.2 Models and methods of facial expressions
11.2.1 FE models of the headfrom and respirator
11.2.2 Simulation methods of facial expressions
11.3 Effects of facial expressions on respirators fit
11.4 Conclusion
References
Chapter 12 Customized design and 3D printing of face seal for an N95 FFR
12.1 Introduction
12.2 Design, manufacture and test of customized face seals
12.2.1 3D laser scanning of human headform
12.2.2 Customized design of FFR face seal
12.2.3 3D printing of the FFR face seal
12.2.4 Experiment setup and procedures
12.3 Contact characteristics between the FFR and headform
12.4 Discussion
12.5 Conclusion
References

本书针对人类呼吸安全，从微观和宏观两个角度全面而详细地研究了N95口罩的佩戴性能。第1章为绪论，第2章和第3章研究了口罩纤维对颗粒物的吸附和反弹机理，第4章仿真分析了佩戴N95口罩情况下呼吸道系统内的气流场，第5章研究了水蒸气在口罩腔体内冷凝分布特性，第6章分析了口罩腔体内水蒸气冷凝效果和微生物生长特性，第7章研究了吸烟产生的PM2.5颗粒在室内通风条件下的分布和扩散特性，第8章和第9章设计优化了新型风扇口罩，第10章和第11章研究了N95口罩佩戴的接触特性，第12章提出了一种N95口罩密封圈设计。
本书内容系统全面、新颖独特，面向从事空气颗粒物预防和口罩过滤性能等相关领域的科研人员，以及关注人类呼吸健康的专家学者和普通读者。