Numerical simulation of aggregation of submicron particles

• Project/Area Number: 22760129
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Fluid engineering
• Research Institution: Sophia University (2012); Osaka University (2010-2011)
• Principal Investigator: WATANABE Mariko 上智大学, 理工学部, 准教授 (80452473)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 混相流 / サブミクロン粒子 / 凝集 / シミュレーション / Submicron particle / Immersed boundary method / Slip flow / Aggregation / Brownian force

Research Abstract

This study aimed to develop a direct numerical simulation method to systematicallytreat submicron- to micron-sized particles. This method was based on a body-force-typeimmersed boundary method. The inward slip distance assumed between the virtualand actual interfaces resulted in the slip flow effect and a solid volume fraction wascalculated using the virtual interface. In addition, I developed an algorithm thatcalculates random motion and aggregation by Brownian force and clarified theinfluence of physical conditions such as temperature and boundary conditions on theaggregation shape and formation process by using the Brownian dynamics simulation code

Research Products

• [Journal Article] Brownian Dynamics Simulation of theAggregation of Submicron Particles inStatic Gas (2013)
  • Author(s): Mariko Watanabe, Daisuke Tanaka
  • Journal Title: Computers & ChemicalEngineering, Reviewed paper Volume: Vol. 54 Pages: 151-158
  • DOI: 10.1016/j.compchemeng.2013.03.028
  • Peer Reviewed
• [Presentation] Investigation of thefactors affecting aggregation ofsubmicron particles by Browniandynamics simulation (2012)
  • Author(s): Mariko Watanabe
  • Organizer: The 23rdInternational Symposium on TransportPhenomena (ISTP-23)
  • Place of Presentation: New Zealand
• [Presentation] Investigation of the factors affecting aggregation of submicron particles by Brownian dynamics simulation (2012)
  • Author(s): Mariko Watanabe
  • Organizer: The 23rd International Symposium on Transport Phenomena (ISTP-23)
  • Place of Presentation: オークランド、ニュージーランド
• [Presentation] Brownian Dynamics Simulation on Aggregation of Submicron Particles (2011)
  • Author(s): Mariko Nakamura
  • Organizer: 11th Asian Symposium on Visualization
  • Place of Presentation: 新潟
  • Year and Date: 2011-06-07
• [Presentation] サブミクロン粒子の凝集に関するブラウン動力学シミュレーション (2010)
  • Author(s): 田中大資、中村摩理子
  • Organizer: 日本機械学会 2010 年度年次大会講演論文集