Effect of Flame Surface Shape and Unsteady Behavior on Flame Structure of Turbulent Premixed Flames

火焰表面形状和非定常行为对湍流预混火焰火焰结构的影响

• 批准号: 18560196
• 负责人: YAMASHITA Hiroshi
• 金额: $ 2.48万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560196/
• 关键词: Premixed Flame; Turbulent Flow; Flame Shape; Unsteady Behavior; Flame Structure; Turbulent Combustion Model; Numerical Analysis; 水炎面形状

The turbulent flame is used in a wide variety of applications. However, combustion is an extremely complex phenomenon combining a lot of physical, chemical processes. In order to elucidate such a complex phenomenon, we examined the effect of flame surface shape and unsteady behavior on flame structure of turbulent premixed flames as follows :1.Research investigationWe investigated the previous studies on the simultaneous measurement by multiple PLIF equipments and the construction of turbulent combustion model.2.Execution of the experiment for turbulent combustionWe established the measurement system for instantaneous planar flame image using simultaneous OH-HCHO PLIF technique. Then, we executed the experiment and examined the effect of flame surface shape and unsteady behavior on flame structure of turbulent premixed flames.3. Execution of the numerical calculation for construction of turbulent combustion modelWe improved the numerical simulation equipment using turbulent combustion model. Then, we executed the numerical calculation for construction of turbulent combustion model, and carried out the data analysis. Especially, we investigated the flame structure of unsteady counterflow premixed flame, and the influence of equivalence ratio and flame stretch on flame structure of methane-air counterfiow twin-premixed flames by mainpulating Lewis number.4.Verification of numerical calculation results using turbulent combustion model by combustion experimentWe verified the numerical calculation results using turbulent combustion model by combustion experiment5.Summarization of the present study and presentation of the obtained resultsWe summarized the present study, then we presented our results at the domestic and foreign conferences and the academic journals.

湍流火焰用于多种应用中。但是，燃烧是一种非常复杂的现象，结合了许多物理化学过程。为了阐明这种复杂的现象，我们检查了火焰表面形状和不稳定行为对湍流预混合火焰的火焰结构的影响，如下所示：1。研究调查调查了先前的研究，研究了对多个PLIF设备的同时测量的研究，并通过多个PLIF设备进行了构建湍流的构造，以实验构建湍流的构图。同时使用OH-HCHO PLIF技术。然后，我们执行了实验，并检查了火焰表面形状和不稳定行为对湍流预防火焰的火焰结构的影响3。使用湍流燃烧模型改进了数值燃烧模型的数值计算。然后，我们执行了用于构建湍流燃烧模型的数值计算，并进行了数据分析。特别是，我们调查了不稳定的逆流预混合火焰的火焰结构，以及等效比和火焰对甲烷 - 空气反构架双形火焰的火焰结构的影响，通过验证数值计算的验证，利用湍流实验。本研究和介绍获得的结果总结了本研究，然后我们在国内外会议和学术期刊上介绍了结果。

项目成果

Investigation of Influence of Equivalence Ratio and Flame Stretch on Flame Structure of Methane-Air Counterflow Twin-Premixed Flames by Manipulating Lewis Number

利用路易斯数研究当量比和火焰拉伸对甲烷-空气逆流双预混火焰火焰结构的影响

• 期刊: Journal of the Combustion Society of Japan Vol.50(Accepted)
• 作者: N. Hayashi;H. Yamashita
• 通讯作者: H. Yamashita

Investigation of Flame Structure in Unsteady Counterflow Premixed Flame by Manipulating Lewis Number

利用路易斯数研究非定常逆流预混火焰的火焰结构

• 发表时间: 2007
• 作者: N. Hayashi;H. Yamashita
• 通讯作者: H. Yamashita

Numerical Study of Flame Structure in Counterflow Premixed Flames with Flame Curvature

逆流预混火焰中火焰曲率火焰结构的数值研究

• 发表时间: 2006
• 作者: N. Hayashi;H. Yamashita
• 通讯作者: H. Yamashita

Numerical Study on Flame Structure in Unsteady Counterflow Premixed Flames

非定常逆流预混火焰火焰结构的数值研究

• 发表时间: 2007
• 作者: N. Hayashi;H. Yamashita
• 通讯作者: H. Yamashita

火炎曲面率を持った対向流予混合火炎の火炎構造に関する数値解析

具有火焰曲率的逆流预混火焰火焰结构数值分析

• 发表时间: 2006
• 期刊: 第20回数値流体力学シンポジウム講演論文集 (CD-ROM)
• 作者: 林直樹;山下博史
• 通讯作者: 山下博史