Heat Transfer Mechanism of Solid Combustion by Mulitple Impinging Jets Involving both Flow and Reaction Field

涉及流动场和反应场的多冲击射流固体燃烧传热机理

• 批准号: 24860002
• 负责人: MATSUOKA Tsuneyoshi
• 金额: $ 1.66万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-08-31 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24860002/
• 关键词: 衝突噴流; 平面噴流; 壁面噴流; よどみ点; 熱伝達; 燃焼速度; 固体燃焼; 拡散火炎; 固体燃料; 平面ノズル; ダムケラー数; レイノルズ数

To investigate the effect of jet-to-jet spacing of multiple impinging oxidizer jets on burning rate of solid combustibles, experiments with different jet-to-jet spacing nozzles were performed. Main achievements are as follows.1. Lateral profiles of burning rate using double impinging oxidizer jets were entirely different depending on spacing of the nozzle. Typically, the point at which maximum burning rate was obtained was shifted outside for the wider spacing nozzle.2. The Dependence of burning rate on Reynolds number was also shown. As well as heat transfer dependence in the stagnation region of non-combustion case, the burning rate was proportional to Reynolds number to the power of 0.5. On the other hand, the burning rate just below the slits for the case of wider jet-to-jet spacing was proportional to Reynolds number to the power of 0.8.

为了研究氧化剂射流间距对固体可燃物燃烧速率的影响，采用不同射流间距的喷嘴进行了实验研究。主要成果如下：1.燃烧速率的横向分布使用双冲击氧化剂射流是完全不同的，取决于喷嘴的间距。典型地，对于较宽的间距，获得最大燃烧速率的点向外移动。燃烧速率对雷诺数的依赖性也被显示出来。在非燃烧情况下，燃烧速率与雷诺数的0.5次方成正比。另一方面，对于较宽的射流间距，狭缝下方的燃烧速率与雷诺数的0.8次方成正比。

项目成果

Gravity Effect on Flow Field of Flame Spread in Fuel Tube

重力对燃料管内火焰传播流场的影响

• 发表时间: 2013
• 作者: Tsuneyoshi Matsuoka;Harunori Nagata;Yuji Nakamura
• 通讯作者: Yuji Nakamura

Scale Effect on Flame Spread Rate in Narrow Cylindrical Gap

狭窄圆柱形间隙中火焰蔓延速率的尺度效应

• 发表时间: 2013
• 作者: Tsuneyoshi Matsuoka;Yuji Nakmura;Harunori Nagata;Takuya Yamazaki
• 通讯作者: Takuya Yamazaki

可燃性固体内部の微小空隙を燃え拡がる火炎におよぼすスケールの影響

水垢对火焰通过可燃固体内部微小空隙蔓延的影响

• 发表时间: 2013
• 作者: 松岡常吉;中村祐二;永田晴紀;山崎拓也
• 通讯作者: 山崎拓也

Effect of distance between double two-dimensional impinging oxidizer jets on burning rate of solid combustibles

双二维撞击氧化剂射流间距对固体可燃物燃烧速率的影响

• 发表时间: 2014
• 作者: Tsuneyoshi Matsuoka;Kyohei Kamei;Susumu Noda
• 通讯作者: Susumu Noda

2次元流れ場のよどみ点近傍に形成された拡散火炎の熱伝達特性に関する研究

二维流场驻点附近扩散火焰传热特性研究

• 作者: 斉藤竜也，松岡常吉，寺川健，戸谷剛，脇田督司，永田晴紀