干旱区生态环境知识资源中心(Arid): The sandfish lizard's aerodynamic filtering system

Arid

DOI	10.1088/1748-3190/ab6137
	The sandfish lizard's aerodynamic filtering system
	Stadler, Anna T.1; Krieger, Michael 2; Baumgartner, Werner 1
通讯作者	Stadler, Anna T.
来源期刊	BIOINSPIRATION & BIOMIMETICS
ISSN	1748-3182
EISSN	1748-3190
出版年	2020
卷号	15 期号:3
英文摘要	Particulate air pollution has an adverse effect on cardiovascular and respiratory health. Air filtration systems are therefore essential in closed indoor environments. While mechanical filtration is described as an efficient technology, particle filters may act as a source of pollution if not correctly installed and frequently maintained. The sandfish lizard, a sand swimmer that spends nearly its whole life in fine desert sand, inspired us to rethink traditional filtering systems due to its unique ability of filtering sand from its nasal cavity. During a slow, prolonged inhalation, strong cross-flow velocities develop in a certain region of the upper respiratory tract; these cross-flows enhance gravitational settling and force inhaled sand grains towards the wall where they adhere to mucus, which covers the walls in this region. During an intense, cough-like exhalation the particles are blasted out. In this work, the sandfish's aerodynamic filtering system was analyzed experimentally and by computational fluid dynamics simulations to study the flow profile and particle trajectories. Based on these findings, we discuss the development of a biomimetic filtering system, which could have the following advantages: due to the absence of a membrane, total pressure losses can be reduced. The mucus-covered surface would be mimicked by a specifically treated surface to trap particulate matter. Also, the device would contain a self-cleaning mechanism that simulates the lizard's exhalation. This biomimetic filtering system would therefore have an enhanced life-time and it would be low-maintenance and therefore economical and sustainable.
英文关键词	sandfish lizard aerodynamic filtering system flow profile particle simulation
类型	Article
语种	英语
国家	Austria
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000518933800001
WOS关键词	SCINCUS-SCINCUS ; PARTICLES ; HEALTH ; BENEFITS ; FLOW
WOS类目	Engineering, Multidisciplinary ; Materials Science, Biomaterials ; Robotics
WOS研究方向	Engineering ; Materials Science ; Robotics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314173
作者单位	1.Johannes Kepler Univ Linz, Inst Biomed Mechatron, Altenberger Str 69, A-4040 Linz, Austria; 2.Johannes Kepler Univ Linz, Inst Fluid Mech & Heat Transfer, Altenberger Str 69, A-4040 Linz, Austria
推荐引用方式 GB/T 7714	Stadler, Anna T.,Krieger, Michael,Baumgartner, Werner. The sandfish lizard's aerodynamic filtering system[J],2020,15(3).
APA	Stadler, Anna T.,Krieger, Michael,&Baumgartner, Werner.(2020).The sandfish lizard's aerodynamic filtering system.BIOINSPIRATION & BIOMIMETICS,15(3).
MLA	Stadler, Anna T.,et al."The sandfish lizard's aerodynamic filtering system".BIOINSPIRATION & BIOMIMETICS 15.3(2020).