Modeling of bubble motion in slurry and development of numerical method for predicting bubbly flows

• Project/Area Number: 23760160
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Kobe University
• Principal Investigator: HAYASHI Kosuke 神戸大学, 工学研究科, 准教授 (60455152)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 流体工学 / 水資源 / 気泡 / 数値シミュレーション / 水処理

Research Abstract

An interface tracking method for predicting single bubbles in contaminated systems was developed and experiments on bubbles in liquids were carried out to develop a numerical method for predicting bubbly flows in wastewater treatment devices based on membrane bioreactor method. A drag and lift forces were modeled by accounting for the effects of surfactant on bubble motion. A multi-fluid model implementing these models was developed.

Research Products

• [Journal Article] Immersed Boundary-Lattice Boltzmann Method Using Two-Relaxation Times (2012)
  • Author(s): Kosuke Hayashi, Roberto Rojas, Takeshi Seta, Akio Tomiyama
  • Journal Title: Journal of Computational Multiphase Flows Volume: Vol.4, No.2 Pages: 193-209
  • Peer Reviewed
• [Journal Article] Immersed Boundary-Lattice Boltzmann Method Using Two Relaxation Times (2012)
  • Author(s): Kosuke Hayashi, Roberto Rojas, Takeshi Seta, Akio Tomiyama
  • Journal Title: Journal of Computational Multiphase Flows Volume: Vol. 4
  • Peer Reviewed
• [Presentation] 粘性力及び表面張力の評価法が界面運動の数値予測に及ぼす影響 (2013)
  • Author(s): 林公祐,冨山明男
  • Organizer: 第62回理論応用力学講演会
  • Place of Presentation: 東京
• [Presentation] Interface Tracking Simulation of Bubbles in Clean and Contaminated Systems (2012)
  • Author(s): Kosuke Hayashi, Akio Tomiyama
  • Organizer: Proc. of Korea-Japan CFD Workshop 2012
  • Place of Presentation: 釜山,韓国
  • Year and Date: 2012-11-23
• [Presentation] Effects of Surfactant on the Motion of Bubbles in Linear Shear Flows (2012)
  • Author(s): Kosuke Hayashi, Ryo Kurimoto, Shigeo Hosokawa, Akio Tomiyama
  • Organizer: Proc. of 2012 Japan-U.S. Seminar on Two-Phase Flow Dynamics
  • Place of Presentation: 東京
• [Presentation] Effects of Numerical Treatment of Viscous and Surface Tension Forces on Predicted Interface Motion (2012)
  • Author(s): Kosuke Hayashi, Akio Tomiyama
  • Organizer: Proc. of 9th International Conference on CFD in the Minerals and Process Industries
  • Place of Presentation: メルボルン,オーストラリア
• [Presentation] Effects of Surfactant on the Motion of Bubbles in Linear Shear Flows (2012)
  • Author(s): 林 公祐
  • Organizer: 2012 Japan-U.S. Seminar on Two-Phase Flow Dynamics
  • Place of Presentation: Shinagawa, Japan
• [Presentation] Effects of Numerical Treatment of Viscous and Surface Tension Forces on Predicted Interface Motion (2012)
  • Author(s): 林 公祐
  • Organizer: 9th International Conference on CFD in the Minerals and Process Industries
  • Place of Presentation: Melbourne, Australia
• [Presentation] Interface Tracking Simulation of Bubbles in Clean and Contaminated Systems (2012)
  • Author(s): 林 公祐
  • Organizer: Korea-Japan CFD Workshop 2012
  • Place of Presentation: Busan, Korea