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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