http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
안원진(Wonjin Ahn),김호영(Ho-Young Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
When a small tube is dipped into a liquid surface, surface tension forces cause the liquid in the tube to rise vertically against the gravity. When the tube is flexible, hydrostatic pressure difference caused by the capillary flow deforms the tube and the deformation which narrows the flow route changes the rising velocity. We study a simple model of this elastocapillary interaction in the context of the surface-tension-driven vertical rise of a liquid between two long flexible hydrophilic sheets that are held a small distance apart at one end. We provide an analytical theory for the rise rate of the liquid and show that our experiments are consistent with the theory.
이덕규(Duck-Gyu Lee),정광훈(Kwang-Hun Jeong),안원진(Wonjin Ahn),김성호(Sung-Ho Kim),김호영(Ho-Young Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
It is well known that the surface tension forces can make a particle denser than water float when the size of the particle is of the order of 1 mm. This is deeply related to the basic mechanism enabling small insects to wander around on the pond surface and also to a newly emerging technology of self-assembly using capillary forces. For the quantitative understanding of this effect, we experimentally study the maximum density of a cylinder that can float on water and how fast the cylinder sinks when the density exceeds the maximum value. We compare our experimental results with the theoretical prediction developed by our collaborative group and find a good agreement between them.