A High Accuracy/Low Computational Cost Explosion Simulator

• Project/Area Number: 22710158
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Social systems engineering/Safety system
• Research Institution: Yamagata University
• Principal Investigator: KUWANA Kazunori 山形大学, 大学院・理工学研究科, 准教授 (30447429)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 爆発 / 事故 / 被害予測 / 数値流体力学 / 予混合火炎 / 不安定性 / 火炎伝播 / CFD / フラクタル / 安全 / 燃焼 / 爆発被害 / リスク評価 / 安全工学

Research Abstract

To develop a high accuracy/low computational cost explosion simulator, a leakage/diffusion module and a flame propagation module were developed and validated. The leakage/diffusion module considers the atomization and evaporation of a combustible liquid out of a raptured pipe and simulates the formation of a combustible vapor cloud. The flame propagation module considers the acceleration of flame due to hydrodynamic instability based on a fractal concept. Methods to easily determine the flame fractal dimension were also discussed.

Research Products

• [Journal Article] A numerical method to predict flame fractal dimension during gas explosion (2013)
  • Author(s): Y. Wada, K. Kuwana
  • Journal Title: Journal of Loss Prevention in the Process Industries Volume: 26 Issue: 2 Pages: 392-395
  • DOI: 10.1016/j.jlp.2011.11.006
  • Peer Reviewed
• [Journal Article] Scale effect of flame instability mechanisms on propagation velocity (2013)
  • Author(s): K. Mukaiyama, K. Kuwana
  • Journal Title: Journal of Loss Prevention in the Process Industries Volume: 26 Issue: 2 Pages: 387-391
  • DOI: 10.1016/j.jlp.2011.10.003
  • Peer Reviewed
• [Journal Article] Propagation Velocity and Fractal Structure of Premixed Flame during Gas Explosion (2012)
  • Author(s): Y. Wada, K. Kuwana
  • Journal Title: JOURNAL OF CHEMICAL ENGINEERING OF JAPAN Volume: 45 Issue: 10 Pages: 823-828
  • DOI: 10.1252/jcej.11we165
  • NAID: 130001858864
  • ISSN: 0021-9592, 1881-1299
  • Peer Reviewed
• [Journal Article] Propagation velocity and fractal structure of premixed flame during gas explosion (2012)
  • Author(s): Y.Wada, K.Kuwana
  • Journal Title: Journal of Chemical Engineering of Japan Volume: (掲載決定)(印刷中)
  • NAID: 130001858864
  • Peer Reviewed
• [Journal Article] Toward risk assessment of explosion hazard : experimental determination of flame fractal dimension (2011)
  • Author(s): D. Takeda, W. K. Kim, Y. Wada, K. Kuwana, T. Mogi, R. Dobashi
  • Journal Title: Advanced Materials Research Volume: 320 Pages: 151-155
  • DOI: 10.4028/www.scientific.net/amr.320.151
  • Peer Reviewed
• [Presentation] Scale effect of premixed flame deflagration (2011)
  • Author(s): K. Mukaiyama, K. Kuwana
  • Organizer: 4th International Symposium on Energetic Materials and Their Applications
  • Place of Presentation: 自治会館(沖縄県)
  • Year and Date: 2011-11-16
• [Presentation] 小規模実験によるガス爆発時の火炎フラクタル次元の測定 (2011)
  • Author(s): 和田悠香里, 金佑勁, 竹田大祐, 桑名一徳, 茂木俊夫, 土橋律
  • Organizer: 化学工学会・第43回秋季大会
  • Place of Presentation: 名古屋工業大学(愛知県)
  • Year and Date: 2011-09-14
• [Presentation] 火炎伝播挙動における火炎面不安定性の影響 (2011)
  • Author(s): 向山健司, 桑名一徳
  • Organizer: 化学工学会・第43回秋季大会
  • Place of Presentation: 名古屋工業大学(愛知県)
  • Year and Date: 2011-09-14
• [Presentation] Interface instability during premixed flame propagation (2010)
  • Author(s): K. Kuwana, Y. Wada
  • Organizer: 10th International Symposium on Advanced Fluid Information and Transdisciplinary Fluid Integration
  • Place of Presentation: 仙台国際センター(宮城県)
  • Year and Date: 2010-11-01