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격자 볼츠만 방법을 이용한 미소 채널에서의 가스 유동에 대한 표면 거칠기 영향Effect of surface roughness on gas flow in a microchannel by using lattice Boltzmann method
- Other Titles
- Effect of surface roughness on gas flow in a microchannel by using lattice Boltzmann method
- Issue Date
- Nov-2005
- Publisher
- 대한기계학회
- Keywords
- Laminar flow(층류유동); Microchannel flow(미소 채널 유동); Surface roughness(표면 거칠기); Friction factor(마찰 계수); Lattice Boltzmann Method(격자 볼츠만 방법); Gas flow(가스유동)
- Citation
- 대한기계학회 춘추학술대회, pp 979 - 984
- Pages
- 6
- Indexed
- OTHER
- Journal Title
- 대한기계학회 춘추학술대회
- Start Page
- 979
- End Page
- 984
- 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 gas flow of low Reynolds number. surface roughness is modeled by a zigzag array of rectangular modules placed on two sides of a parallel-plate channel. In this study, passive scalar code in lattice Boltzmann Method is used to simulate temperature field for gas flow of low Reynolds number in a microchannel. The results show significant effects of temperature field and surface roughness in the term of the roughness element height. Finally, a significant increase in Poiseuille number is detected as the surface roughness is considered, while the effect of roughness on the temperature field is depends on the surface roughness height.
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Related Researcher
- YOON, JOON YONG
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)