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.

湍流火焰的应用范围很广。然而，燃烧是一种极其复杂的现象，它结合了许多物理、化学过程。为了解释这一复杂现象，本文从以下几个方面研究了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：1.研究综述了前人关于多台PLIF设备同时测量湍流燃烧模型的研究。2.湍流燃烧实验的执行我们建立了基于同时OH-HCHO PLIF技术的瞬时平面火焰图像测量系统。然后进行了实验，考察了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。建立湍流燃烧模型的数值计算执行我们改进了湍流燃烧模型的数值模拟设备。然后，对湍流燃烧模型的建立进行了数值计算，并进行了数据分析。重点研究了非定常逆流预混火焰的火焰结构，以及当量比和火焰拉伸对甲烷-空气对流双预混火焰火焰结构的影响。4.燃烧实验验证了湍流燃烧模型的数值计算结果。5.燃烧实验验证了湍流燃烧模型的数值计算结果。5.总结了目前的研究情况和取得的结果。

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

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

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