Study of Unsteady Flame Structure of Pre Mixture in a Constant Volume Combustion Bomb by Vizualization Measurement of Flame Image

火焰图像可视化测量研究定容燃烧弹预混合气非定常火焰结构

• 批准号: 10650218
• 负责人: TASAKA Hidenori
• 金额: $ 2.24万
• 依托单位: Miyazaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650218/
• 关键词: Combustion; Image Analysis; Pre-mixture Combustion; Combustion Bomb; Flame Structure; 機械工学; 熱工学; 内燃機関; 乱流燃焼; 定容容器; 予混合気

Analysis of combustion phenomena is considered to be effective for reducing enegy consumption and resolving air pollution problems. Many studies have been made on this study, but they still remain the state that burning velocity is affected by the gas velocity. In this research, its last aim is to solve the combustion phenomena in an internal combustion engine, the aim is set to clarify the relation between burning velocity and gas velocity. Experiments were made using constant volume combustion bomb, because of its benefit of measurements. Flame structure was analyzed by the cross sectional image of flame. The characteristics of the flame are flame area, circumferential length and unevenness of flame outline, and the characteristics of gas velocity are the mean velocity and turbulence intensity.It was clarified that the men velocity accelerate to increase flame area and circumferential length. But the condition of high mean velocity is also the condition of high turbulence intensity. So influence of the acceleration of burning velocity can not be specified whether mean velocity or turbulence intensity.It is needed to further investigation to examine the effect of mean velocity and turbulence intensity to burning velocity.

分析燃烧现象被认为是降低能源消耗和解决空气污染问题的有效方法。对此已有很多研究，但仍停留在燃烧速度受气速影响的状态。在本研究中，最后一个目的是解决内燃机的燃烧现象，目的是阐明燃烧速度与气体速度之间的关系。由于定容燃烧弹测量方便，所以进行了实验。利用火焰的横截面图像分析了火焰的结构。火焰的特征是火焰面积、周长和火焰轮廓的不均匀性，气体速度的特征是平均速度和湍流强度。结果表明，火焰面积和周长的增加是由于火焰速度的加快造成的。但是高平均速度的条件也是高湍流强度的条件。因此，无论是平均速度还是湍流强度，燃烧速度加速度的影响都不能确定。平均速度和湍流强度对燃烧速度的影响有待进一步研究。

项目成果

田坂英紀、佐潟隆司、友松重樹: "定容容器を用いた予混合の燃焼性の実験(ガス流動と火炎伝播の関連性)"宮崎大学工学部紀要. 28. 269-274 (1999)

Hideki Tasaka、Takashi Sagata、Shigeki Tomomatsu：“使用定容容器进行预混合的可燃性实验（气流与火焰传播之间的关系）”宫崎大学工学部通报 28. 269-274 (1999)。

Hidenori TASAKA, Shigeki TOMOMATSU, Katsuya SATO: "Experimental Study for Premixed Combustion in a Constant Volume Combustion Bomb(Measurement of Gas Flow and Flame Propagation)"Memoirs of the Fac. Of Engineering, Miyazaki University. No.27. 277-281 (1998

Hidenori TASAKA、Shigeki TOMOMATSU、Katsuya SATO：“定容燃烧弹中预混燃烧的实验研究（气体流量和火焰传播的测量）”Fac 回忆录。

田坂 英紀,佐潟 隆司,友松 重樹: "定容容器を用いた予混合の燃焼性の実験(ガス流動と火災伝播の関連性)"宮崎大学工学部紀要. 28. 269-274 (1999)

Hideki Tasaka、Takashi Sagata、Shigeki Tomomatsu：“使用定容容器进行预混合的可燃性实验（气流与火焰传播之间的关系）”宫崎大学工学部通报 28. 269-274 (1999)。

Hidenori TASAKA, Takashi SAGATA, Shigeki TOMOMATSU: "The Experiment for Combustibility of Premixed Gas using Constant Volume Combustion Bomb (The Relationship between Gas Flow and Propagation of Flame)"Memoirs of the Fac. Of Engineering, Miyazaki Universi

Hidenori TASAKA、Takashi SAGATA、Shigeki TOMOMATSU：“使用定容燃烧弹的预混合气体的可燃性实验（气体流动与火焰传播之间的关系）”Fac的回忆录。

友松 重樹,田坂 英紀: "定容容器による予混合燃焼の実験的研究(ガス流動の調査)"宮崎大学工学部紀要. 28. 257-262 (1999)

Shigeki Tomomatsu、Hideki Tasaka：“定容容器中预混燃烧的实验研究（气体流动的研究）”宫崎大学工学部通报 28. 257-262 (1999)。