Development of a new simulation method for wildfire based on fluid and combustion interaction analysis

• Project/Area Number: 26420463
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Nihon University
• Principal Investigator: HASEBE Hiroshi 日本大学, 理工学部, 講師 (60366565)
• Co-Investigator(Renkei-kenkyūsha): NOMURA Takashi 日本大学, 理工学部, 教授 (50126281)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000); Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 林野火災 / 低マッハ数近似 / VMS法 / 木材延焼速度 / WRF / 木材燃焼モデル / 延焼速度 / 数値流体解析 / ＷＲＦ / 木材燃焼解析

Outline of Final Research Achievements

In the present study, we aimed to construct a new analysis method for wildfire. The results are summarized in the following three points. Firstly, we developed new analysis method for wildfire by using the low Mach number approximation and the variational multiscale method. Secondly, we conducted a combustion experiment in order to obtain the data of fire spreading speed for wildfire. Finally, the initial and boundary condition for a wildfire simulation were obtained by using WRF.

Research Products

• [Presentation] Numerical Study on the Airflow Characteristics Caused by Wood Combustion (2017)
  • Author(s): Hiroshi Hasebe
  • Organizer: 16th International Conference on Automatic Fire Detection
  • Place of Presentation: College Park, Maryland, USA
  • Year and Date: 2017-09-12
  • Int'l Joint Research
• [Presentation] 林野火災の延焼予測を目的とした風と木材燃焼の連成解析法の構築 (2017)
  • Author(s): 長谷部寛
  • Organizer: 第59回風に関するシンポジウム
  • Place of Presentation: 日本大学理工学部駿河台キャンパス（東京都，千代田区）
  • Year and Date: 2017-03-13
• [Presentation] VMS有限要素法を用いた閉空間の自然対流の解析 (2016)
  • Author(s): 鈴木宏哉, 長谷部寛, 野村卓史
  • Organizer: 第43回土木学会関東支部技術研究発表会
  • Place of Presentation: 東京都市大学（東京都，世田谷区）
  • Year and Date: 2016-03-15
• [Presentation] Study on the Airflow Characteristics around Burning Wood by using the Fluid-Combustion Interaction Analysis (2015)
  • Author(s): Hiroshi Hasebe
  • Organizer: The 3rd International Workshops on Advances in Computational Mechanics
  • Place of Presentation: KFC Hall & Rooms (Tokyo, Sumida-ku)
  • Year and Date: 2015-10-13
  • Int'l Joint Research
• [Presentation] 有限要素法による木材燃焼時の気流性状に関する解析 (2015)
  • Author(s): 長谷部寛, 小柳出亨, 野村卓史
  • Organizer: 計算工学講演会
  • Place of Presentation: つくば国際センター
  • Year and Date: 2015-06-08 – 2015-06-10
• [Presentation] Study on the outflow boundary condition for wildfire simulation based on the fluid-combustion interaction analysis (2015)
  • Author(s): Hiroshi Hasebe, Tomoya Saito, Takashi Nomura
  • Organizer: The 18th International Conference on Finite Elements in Flow Problems (FEF2015)
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-03-16 – 2015-03-18