Numerical Study on Deflagration-to-Detonation Transition using an AMR Technique

2011 Fiscal Year Final Research Report

• Project/Area Number: 21560188
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Seikei University
• Principal Investigator: OGAWA Takanobu 成蹊大学, 理工学部, 教授 (50338571)
• Project Period (FY): 2009 – 2011
• Keywords: 流体 / 流体工学 / 数値流体力学 / 衝撃波 / 反応流

Research Abstract

Deflagration-to-Detonation Transition is numerically studied by using an AMR mesh method. We simulate flame acceleration and its transition to detonation in an open space with obstacles. The result shows that the flame speed and acceleration depend on the direction of flame propagation. The flame speed delays in the directions where the flow loses more momentum. In these directions, however, the flame quickly accelerates due to more shock-flame interactions, which also trigger DDT.

Research Products

• [Journal Article] Numerical study on flame acceleration and DDT in an inclined array of cylinders using an AMR technique (2012)
  • Author(s): T. Ogawa, V. N. Gamezo, and E. S. Oran
  • Journal Title: Submitted to Computers and Fluids
• [Journal Article] Flame Acceleration and Transition to Detonation in an Array of Square Obstacles (2011)
  • Author(s): T. Ogawa, V. N. Gamezo, and E. S. Oran
  • Journal Title: Journal of Loss Prevention in the Process Industries
  • DOI: DOI:10.1016/j.jlp.2011.12.009
• [Presentation] AMRとEmbedded boundary法を用いた爆燃爆轟遷移解析 (2011)
  • Author(s): 小川隆申
  • Organizer: 第25回数値流体力学シンポジウム
  • Year and Date: 20110000
• [Presentation] Flame Acceleration and Transition to Detonation in an Array of Cylinders (2011)
  • Author(s): T. Ogawa, V. N. Gamezo, and E. S. Oran
  • Organizer: 23rd International Colloquium on the Dynamics of Explosions and Reactive Systems
  • Year and Date: 20110000
• [Presentation] 円柱群内における二次元爆燃爆轟遷移解析 (2011)
  • Author(s): 小川隆申, 佐藤崇
  • Organizer: 第16回計算工学講演会,第16回計算工学講演会
  • Year and Date: 20110000
• [Presentation] EBChomboを用いた物体まわりの非圧縮性流れ解析 (2011)
  • Author(s): 北川慧太, 小川隆申
  • Organizer: 第16回計算工学講演会,第16回計算工学講演会
  • Year and Date: 20110000
• [Presentation] 障害物付きチャネル内爆燃爆轟遷移現象の解適合直交格子による並列解析 (2010)
  • Author(s): 荒木晴信, 小川隆申
  • Organizer: 第15回計算工学講演会
  • Year and Date: 20100000
• [Presentation] Flame Acceleration and Transition to Detonation in an Array of Square Obstacles (2010)
  • Author(s): T. Ogawa, V. N. Gamezo, E. S. Oran
  • Organizer: Eighth International Symposium on Hazards, Prevention, and Mitigation of Industrial Explosions
  • Year and Date: 20100000
• [Presentation] Detonations in Densely Obstructed Channels (2009)
  • Author(s): T. Ogawa, V. N. Gamezo, E. S. Oran
  • Organizer: 22nd International Colloquium on the Dynamics of Explosions and Reactive Systems
  • Year and Date: 20090000
• [Presentation] Deflagration-to-Detonation Transition in Obstructed Spaces (2009)
  • Author(s): V. N. Gamezo, T. Ogawa, E. S. Oran
  • Organizer: 22nd International Colloquium on the Dynamics of Explosions and Reactive Systems
  • Year and Date: 20090000