Ignition and Flame Propagation in Combustible Mixtures

可燃混合物中的点燃和火焰传播

• 批准号: 09045046
• 负责人: HIRANO Toshisuke
• 金额: $ 1.15万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09045046/
• 关键词: Combustible mixture; Combustible dust; Combustible droplet; Flame propagation; Ignition; Flame structure; Heterogeneous system; Thermal diffusion

To promote a fundamental study of combustion safety on ignition and flame propagation in combustible mixtures, the academic exchange was done between the University of Tokyo and Warsaw University of Technology. The study was made by exchanging the knowledge and technology of the participant researchers during visiting each other. Visits of 4 researchers have been supported by this Grant-in-Aid for Scientific Research.The exchange of knowledge and technology was mainly focused on the combustion mechanisms of combustible particle clouds. A lot of data concerning this study were provided from the participant researchers of both universities.From the University of Tokyo : Data on the propagating mechanism and structure of the flame propagating through combustible particle clouds (Stearic acid, 1-Octadecanol, Metal particle).From Warsaw University of Technology : Data on ignition phenomena and structure of the flame propagating through combustible particle clouds (mainly 1-Octadecanol).As a result, the following points were elucidated.- The structure of a flame propagation through combustible particle (Flame structure, Thickness of preheat zone, Thickness of reaction zone)- The propagating mechanism of a flame propagation through combustible particle clouds (Mechanism of heat transfer, Flame propagating velocity)From these results, it is known that the thickness of such kind of heterogeneous flame propagating through combustible particle clouds is much thicker than that of the flame propagating through homogeneous combustible premixed mixture, and the propagating velocity of the heterogeneous flame becomes much slower. This kind of knowledge is very important to properly understand the combustion phenomena in a heterogeneous system. This program could promote the study of heterogeneous combustion and also academic exchange between Japan and Poland.

为了促进对可燃混合物点火和火焰传播的燃烧安全性的基本研究，东京大学和华沙技术大学之间进行了学术交流。这项研究是通过在互相访问时交换参与者研究人员的知识和技术来进行的。这项赠款的访问得到了4名研究人员的访问，以进行科学研究。知识和技术的交换主要集中在可燃粒子云的燃烧机制上。两所大学的参与者研究人员提供了许多有关这项研究的数据。 1-十二烷醇）。结果，阐明了以下几个点。-通过可燃颗粒（火焰结构，预热区的厚度，反应区域的厚度，反应区域的厚度，反应区域的厚度）的火焰传播的结构 - 通过可燃层云的传播机制的传播机制（泛型传播，插入热量的机制），以使其插入这些插曲，以使其泛型散发出来，以使其泛滥，以使其在繁殖中，以使其在繁殖中，以使其成真，结果是，它是结果的，它是结果的，它的结果是，其结果是结果，结果是，其结果是，其结果是结果，结果是，其结果是结果，结果是，其结果是，其结果是，其结果是结果，结果是，其结果是，其结果是结果，结果是结果，结果是，其结果是结果，结果是，其结果是，其结果是结果，结果是结果，结果是，其结果是结果，结果是结果，它的结果是结果，它是结果的，它是结果的，它是结果的。通过可燃颗粒云传播比通过均匀可燃的预混合混合物繁殖的火焰的厚度要厚得多，而异质火焰的传播速度变得慢得多。这种知识对于正确理解异质系统中的燃烧现象非常重要。该计划可以促进对日本和波兰之间异质燃烧以及学术交流的研究。

项目成果

W-J.Ju, R.Dobashi, and T.Hirano: "Detailed Structure of Flame Propagating Through Stearic Acid Particles Clouds" Int.Symposium on Hazards, Prevention and Mitigation of Industrial Explosions, Proc.of the 8th Int.Colloquium on Dust Explosions (Schaumburg).

W-J.Ju、R.Dobashi 和 T.Hirano：“通过硬脂酸颗粒云传播的火焰的详细结构”工业爆炸危险、预防和缓解国际研讨会，第八届粉尘爆炸国际学术研讨会论文集（

孫 金華,土橋 律,平野敏右: "浮遊金属粒子群中での燃焼帯伝ぱ挙動" 燃焼の科学と技術. (印刷中).

Kinka Son、Ritsu Tsuchihashi、Toshisuke Hirano：“漂浮金属颗粒中的燃烧区传播行为”燃烧科学与技术（正在出版）。