スガ　カズヒコ   Kazuhiko Suga   須賀　一彦    所属   追手門学院大学  理工学部 機械工学科    職種   教授
言語種別	日本語
発行・発表の年月	2010
形態種別	国内学術誌（その他）
査読	査読あり
標題	LBMによるナノチャネル内流動解析
執筆形態	共著・編著（代表編著を除く）
掲載誌名	日本機械学会論文集B編
掲載区分	国内
出版社・発行元	一般社団法人日本機械学会
巻・号・頁	76(770),1525-1533頁
担当区分	責任著者
著者・共著者	竹中奨，金田昌之，須賀一彦，金城友之，兵頭志明
概要	For the lower-cost flow simulations through nano-sized porous media such as catalyst layer of fuel cell, lattice Boltzmann method (LBM) has been improved for high Knudsen number flows by considering diffuse scattering boundary condition and effective relaxation time related to Knudsen number. However, effect of the discrete velocity model has not been validated and only simple geometries are examined for validation of the computational scheme. In this paper, the applicability of the D2Q9 microflow LBM is investigated. It is found that for a channel flow, D2Q9 model shows the tendency of the high-Knudsen number flow with lower slip velocity compared to that by D2Q21 model. Next, the LBM simulations are applied to the flow inside a nano-channel with square cylinder. The reasonable velocity profiles are obtained at D2Q9 rather than D2Q21 model, which suggests that the difference in equivalent distribution function for Q9 and Q21 does not affect drastically for the nano-scale complex flow.
DOI	10.1299/kikaib.76.770_1525
ISSN	0387-5016
Put Code(ORCID)	41807847
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-78651441844&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-9313-1816