Flameless combustion of low calorific value gases, experiments, and simulations with advanced radiative heat transfer modeling

燃烧 辐射传输 热辐射 传热 发射率 大气辐射传输码 燃烧热 热力学 物理 核工程 化学 光学 工程类 有机化学
作者
Phuc-Danh Nguyen,Huu-Tri Nguyen,Pascale Domingo,Luc Vervisch,Gabriel Mosca,Moncef Gazdallah,Paul Lybaert,Véronique Feldheim
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:34 (4) 被引量:6
标识
DOI:10.1063/5.0087077
摘要

Thermal radiation is the dominant mode of heat transfer in many combustion systems, and in typical flameless furnaces, it can represent up to 80% of the total heat transfer. Accurate modeling of radiative heat transfer is, thus, crucial in the design of these large-scale combustion systems. Thermal radiation impacts the thermochemistry, thereby the energy efficiency and the temperature sensitive species prediction, such as NOx and soot. The requirement to accurately describe the spectral dependence of gaseous radiative properties of combustion products interacts with the modeling of finite rate chemistry effects and conjugates heat transfer and turbulence. Additionally, because of the multiple injection of fuels and/or oxidizers of various compositions, case-specific radiative properties' expressions are required. Along these lines, a comprehensive modeling to couple radiation and combustion in reacting flows is attempted and applied to the simulation of flameless combustion. Radiation is modeled using the spectral line-based weighted-sum-of-gray-gases approach to calculate gaseous radiative properties of combustion products using the correlation of the line-by-line spectra of H2O and CO2. The emissivity weights and absorption coefficients were optimized for a range of optical thicknesses and temperatures encountered in the considered furnace. Efforts were also made on the development of a reliable and detailed experimental dataset for validation. Measurements are performed in a low calorific value syngas furnace operating under flameless combustion. This test rig features a thermal charge which can extract about 60% of combustion heat release via 80% of radiative heat transfer, making it of special interest for modeling validation. The comparison between the simulation and the experiment demonstrated a fair prediction of heat transfer, energy balance, temperature, and chemical species fields.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
天竹子完成签到,获得积分10
1秒前
921完成签到,获得积分10
2秒前
123完成签到,获得积分10
3秒前
hwx举报求助违规成功
6秒前
感性的安露举报求助违规成功
6秒前
千跃举报求助违规成功
6秒前
6秒前
花陌应助wangye采纳,获得10
6秒前
7秒前
小夏完成签到,获得积分10
7秒前
情怀应助rpe采纳,获得10
7秒前
8秒前
充电宝应助SL采纳,获得10
9秒前
9秒前
bkagyin应助冷艳招牌采纳,获得10
10秒前
13秒前
14秒前
17秒前
陈文学发布了新的文献求助10
18秒前
19秒前
今天读文献了吗完成签到,获得积分20
20秒前
hh完成签到,获得积分10
21秒前
23秒前
24秒前
夏天完成签到,获得积分10
24秒前
量子星尘发布了新的文献求助10
25秒前
fwstu发布了新的文献求助20
25秒前
Maisie发布了新的文献求助10
26秒前
李博士完成签到,获得积分10
26秒前
卞卞发布了新的文献求助10
27秒前
领导范儿应助碧蓝的宝马采纳,获得10
28秒前
小二郎应助WD采纳,获得10
29秒前
ersan发布了新的文献求助10
31秒前
31秒前
33秒前
33秒前
澡雪发布了新的文献求助10
34秒前
35秒前
乖猫要努力应助FYZ采纳,获得10
37秒前
37秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975458
求助须知:如何正确求助?哪些是违规求助? 3519866
关于积分的说明 11199996
捐赠科研通 3256213
什么是DOI,文献DOI怎么找? 1798133
邀请新用户注册赠送积分活动 877386
科研通“疑难数据库(出版商)”最低求助积分说明 806305