干旱区生态环境知识资源中心(Arid): 沙漠甲虫背部凝水分析

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	沙漠甲虫背部凝水分析
其他题名	Analysis of Water Capture from Air by a Desert Beetle
	张欣茹; 姜泽毅; 柳翠翠; 杨怡菲; 张欣欣
ISSN	1005-0930
出版年	2006
卷号	14 期号:2 页码:275-281
中文摘要	基于沙漠甲虫利用由亲水突起和疏水凹槽组成的背部凝聚空气中水分的现象，分析凝水过程物理机理，给出数学描述．将凝水过程分作三个阶段，吸聚：小雾滴在背部亲水突起上吸附，长大成小水珠；聚合长大：单突起上直径为12mm的小水珠因不能脱落而与邻近水珠聚合，之后长大为大水珠；脱落：大水珠从背部脱落，流入甲虫口中．导出了水珠脱落半径与甲虫背部表面及外界环境参数的数学关系，得出风速为5m／s时，直径至4．1--5．6mm的水珠以滑动方式脱落，这与文献中实际观察到的水珠脱落直径为45mm基本一致．
英文摘要	Stenocara beetles in the Namib Desert collect drinking water from air by their backs, which are bumpy and consist of alternating hydrophilic peaks and hydrophobic trough regions. In this paper, the water collection is investigated to understand the physical mechanisms, and the mathematical expressions are derived to describe the phenomena. The water gathering process is divided into three phases, Adsorption-Aggregation in which the tiny foggy drops are adsorbed and aggregated to small drops on the beetle back, Growing up-Conglomeration in which the small drops aggregate with the neighboring ones and form into larger ones, and Departure in which the larger drops detach from the beetle back to its mouth. The drop departure diameter is obtained from the mathematical descriptions, and at the wind speed of Sm/s, drops would detach from the beetle back at a diameter ranging from 4. lmm to 5.6mm,which is consistent with the actual observations.
中文关键词	传热传质 ; 空气取水 ; Stenocara甲虫 ; 表面特性
英文关键词	heat and mass transfer water capture from air stenocara beetle surface characteristic
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENERGY FUELS
WOS研究方向	Energy & Fuels
CSCD记录号	CSCD:2347573
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220332
作者单位	北京科技大学机械工程学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	张欣茹,姜泽毅,柳翠翠,等. 沙漠甲虫背部凝水分析[J],2006,14(2):275-281.
APA	张欣茹,姜泽毅,柳翠翠,杨怡菲,&张欣欣.(2006).沙漠甲虫背部凝水分析.,14(2),275-281.
MLA	张欣茹,et al."沙漠甲虫背部凝水分析".14.2(2006):275-281.