HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
工学研究科  >
雑誌発表論文等  >

Numerical simulation of concentration interface in stratified suspension : Continuum–particle transition


IJMF.73(2015).71-79.pdf5.33 MBPDF見る/開く

タイトル: Numerical simulation of concentration interface in stratified suspension : Continuum–particle transition
著者: Yamamoto, Yasufumi 著作を一覧する
Hisataka, Fumiya 著作を一覧する
Harada, Shusaku 著作を一覧する
キーワード: Stratified suspension
Concentration interface
Numerical simulation
Fingering instability
発行日: 2015年 7月
出版者: Elsevier
誌名: International Journal of Multiphase Flow
巻: 73
開始ページ: 71
終了ページ: 79
出版社 DOI: 10.1016/j.ijmultiphaseflow.2015.03.007
抄録: Behavior of concentration interfaces, which are apparent interfaces between a suspension and pure liquid, was studied using numerical techniques. Two types of numerical simulations were used to classify whether collective or individual behavior occurred in the ratio of the average particle separation to the wavelength of the fastest growing perturbation. The first is Lagrangian tracking of individual particles in fluid, and the second type is interface tracking of two immiscible continuum phases. These two extremely different approaches represent the dual nature of the concentration interface: immiscible with no interfacial tension and miscible with no diffusion. These results reflect the experimentally-observed behavior of particles, which is both collective and individual. Sealing of the concentration interface by particle-induced flow is crucial to collective motion of suspended particles. A proposed dimensionless parameter describes quantitatively the transition from collective to individual settling of suspended particles.
Rights: ©2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 原田 周作


本サイトに関するご意見・お問い合わせは repo at へお願いします。 - 北海道大学