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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.12
- 수록면
- 207 - 214 (8page)
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초록· 키워드
오류제보하기
Mass and flow resistance in a square ribbed microchannel have been studied numerically using the Lattice Boltzmann Method. It has been build up on two dimensional nine velocity vectors model with single relaxation time method called the Lattice Bhatnagor-Gross-Krook model. To analyze the roughness effect on the flow resistance namely the friction factor and mass flow has been discussed at the slip flow regime, 0.01≤Kn≤0.10, where Kn is the Knudsen number. The wall roughness is considered by square microelements with a relative roughness height up to maximum 10% of channel height. The velocity profiles in terms of streamlines near the riblets are demonstrated to be responsible for the roughness effect. It is found that the roughness effect leads to increase the flow resistance with roughness height but it is decreased significantly with increasing the space between two roughness elements as well as the Knudsen number. In addition, the mass flow decreased linearly with increasing both roughness height and gap but significantly changed at the slip flow regime.
목차
Abstract
1. Introduction
2. Formulation of the problem
3. Results and discussion
4. Conclusions
References
참고문헌 (14)
참고문헌 신청
1. [학술지(정기간행물)] - B-Y. Cao / 2006 / Effect of surface roughness on gas flow in microchannels by molecular dynamics / Int. J. Engineering Science 44 : 927 ~ 937
2. [학술지(정기간행물)] - O. Rovenskaya / 2013 / Numerical investigation of microflow over rough surfaces:coupling approach / Journal of Heat Transfer 135 : 101005-1 ~ 101005-8
3. [학술지(정기간행물)] - M. H. Khadem / 2009 / Effects of rarefaction and compressibility on fluid flow at slip flow regime by direct simulation of roughness / Int. J. Aerospace and Mechanical Engineering 3 (4) : 204 ~ 210
4. [학술지(정기간행물)] - G. Croce / 2004 / Numerical analysis of roughness effect on microtube heat transfer / Superlattices and Microstructures 35 : 601 ~ 616
5. [학술지(정기간행물)] - Y.Ji / 2006 / Numerical simulation of wall roughness on gaseous flow and heat btransfer in a microchannel / Int. J. Heat and Mass Transfer 49 : 1329 ~ 1339
2. [학술지(정기간행물)] - O. Rovenskaya / 2013 / Numerical investigation of microflow over rough surfaces:coupling approach / Journal of Heat Transfer 135 : 101005-1 ~ 101005-8
3. [학술지(정기간행물)] - M. H. Khadem / 2009 / Effects of rarefaction and compressibility on fluid flow at slip flow regime by direct simulation of roughness / Int. J. Aerospace and Mechanical Engineering 3 (4) : 204 ~ 210
4. [학술지(정기간행물)] - G. Croce / 2004 / Numerical analysis of roughness effect on microtube heat transfer / Superlattices and Microstructures 35 : 601 ~ 616
5. [학술지(정기간행물)] - Y.Ji / 2006 / Numerical simulation of wall roughness on gaseous flow and heat btransfer in a microchannel / Int. J. Heat and Mass Transfer 49 : 1329 ~ 1339
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UCI(KEPA) : I410-ECN-0101-2016-550-001004202