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격자 볼츠만 방법을 이용한 미소채널 내에서의 층류 유동에 대한 표면 거칠기의 영향

Title
격자 볼츠만 방법을 이용한 미소채널 내에서의 층류 유동에 대한 표면 거칠기의 영향
Other Titles
Effect of surface roughness on laminar flow in a micro-channel by using lattice Boltzmann method
Author
윤준용
Keywords
Laminar flow(층류유동); Microchannel flow(미소 채널 유동); Surface roughness(표면 거칠기); Friction factor(마찰 계수); Lattice Boltzmann Method(격자 볼츠만 방법)
Issue Date
2006-08
Publisher
한국유체기계학회
Citation
유체기계공업학회 제4회 한국유체공학학술대회 논문집, v. 1, Page. 179 - 183
Abstract
Surface roughness is present in most of the microfluidic devices due to the microfabrication techniques. This paper presents lattice Boltzmann method (LBM) results for laminar flow in a microchannel with surface roughness. The surface roughness is modeled by an array of rectangular modules placed on top and bottom side of a parallel-plate channel. In this study, LBGK D2Q9 code in lattice Boltzmann Method is used to simulate flow field for low Reynolds number in a micro-channel. The effects of relative surface roughness, roughness distribution, roughness size and the results are presented in the form of the product of friction factor and Reynolds number. Finally, a significant increase in Poiseuille number is detected as the surface roughness is considered, while the effect of roughness on the microflow field depends on the surface roughness.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01172409&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/108408
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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