Measurement and Modeling of the Properties of Flame and Hot Current on the Sloped Level

倾斜水平面上火焰和热流特性的测量和建模

• 批准号: 21810032
• 负责人: IMAMURA Tomohiko
• 金额: $ 1.71万
• 依托单位: Tokyo University of Science, Suwa
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21810032/
• 关键词: 火災; 防災; 熱気流; 傾斜地; モデル化

The shape of flame generated on the sloped level such as forest fire is different from that generated on the horizontal flat level, and that leads to the spread of fire. In odor to study and clarify the flame shape generated on the sloped level is very important for field fire protection, but the useful and applicable research reports hardly. The purpose of this study is to clarify the flame shape generated on the slopped level to obtain, experimentally to know the influence of the slope angle on the flame shape as the first step. Based on this study, following new knowledge is clarified : (1) The flame generated on the sloped level inclined to the sloped surface and run along the sloped surface because the less entrainment of the air to the flame carried out behind flame side, (2) The total flame length on the sloped level is depended on only the heat release rate. The length which is run along the inclined surface is depended on the sloped angle, then the flame rose a certain length which depends on the balance of the heat release rate and the sloped angle. The total flame length is in proportional to Q^<*2/5>, and this behavior is the same as the dependence of the flame length on the heat release rate on the horizontal surface.

森林火灾等在倾斜平面上产生的火焰形状与在水平平面上产生的火焰形状不同，这导致了火灾的蔓延。因此，研究和阐明坡面上产生的火焰形态对现场消防工作具有重要意义，但实用性强、适用性强的研究报道却很少。本研究的目的是澄清倾斜水平上产生的火焰形状，以获得，实验知道的倾斜角度对火焰形状的影响作为第一步。在此基础上，阐明了以下新认识：（1）火焰在斜面上产生，并沿斜面沿着运动，是因为火焰侧后方的空气对火焰的卷吸作用较小;（2）斜面上火焰的总长度仅取决于热释放速率。火焰沿倾斜表面沿着行的长度取决于倾斜角度，火焰上升一定的长度取决于放热率与倾斜角度的平衡。火焰总长度与Q^<*2/5>成正比，这与火焰长度对水平面上热释放速率的依赖性相同。

项目成果

傾斜面における火災プルームの温度分布性状

斜坡上火羽流温度分布特性

• 发表时间: 2010
• 作者: 荻崇;小西康裕;小松悟・金子慎治;栗田匡相;今村友彦,山崎裕太,大原達也,上矢恭子,須川修身;藤倉良・小松悟・金子慎治;荻崇;山崎裕太,今村友彦,大原達也,上矢恭子,須川修身
• 通讯作者: 山崎裕太,今村友彦,大原達也,上矢恭子,須川修身

傾斜面における火炎形状

斜坡上的火焰形状

• 发表时间: 2010
• 作者: 荻崇;小西康裕;小松悟・金子慎治;栗田匡相;今村友彦,山崎裕太,大原達也,上矢恭子,須川修身
• 通讯作者: 今村友彦,山崎裕太,大原達也,上矢恭子,須川修身