在微管中预混合n-heptane/空气燃烧的数值模拟与内部通道优化
Qi Huang1, Chao Zeng1, Wenjun Wan1
1School of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing, 401331, China.
Heliyon
|July 25, 2024
概括
这项研究优化了用于航空航天应用的微型燃烧器中的n-heptane燃烧. 增强内部流通道的阻隔器或向后的步骤显著改善了火焰稳定性和墙壁辐射效率.
科学领域:
- 燃烧科学 燃烧科学
- 航空航天工程 航空航天工程
- 材料科学 材料科学 材料科学
背景情况:
- 汽油和航空煤油是军事和航空航天领域微型动力系统的主要燃料.
- 甲是一种可行的替代燃料,需要对其燃烧特性进行研究.
- 微型电力系统需要高效和稳定的燃烧才能可靠运行.
研究的目的:
- 为了研究n-heptane/空气在微石英玻璃管燃烧器中的预混合燃烧特性.
- 分析内部流通道修改对燃烧性能的影响.
- 为了优化燃烧效率和减少微型电力系统的排放.
主要方法:
- 使用数值模拟来研究n-heptane/空气预混合燃烧.
- 内部流通道的修改包括一个内置的交叉分离器和一个缩小的向后面的台阶.
- 分析重点是内部流量线,墙壁温度,二氧化碳排放和墙壁辐射.
主要成果:
- 一个内置的交叉波器集中和稳定了火焰,增加了墙壁的温度.
- 一个缩小的向后面的步骤促进了燃料混合和火焰通过反流区固定.
- 优化内部通道结构对于提高墙壁辐射效率至关重要.
结论:
- 增强内部流通道对于提高微型燃烧器性能至关重要.
- 阻隔器和向后的步骤为火焰稳定和混合提供了明显的优势.
- 这项研究为开发使用n-heptane的更高效的微型电力系统提供了见解.
更多相关视频
10:29Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
Published on: June 1, 2016
11.8K
07:58Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
Published on: January 18, 2021
5.9K
相关概念视频
02:14Combustion Energy: A Measure of Stability in Alkanes and Cycloalkanes
6.3K
The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were initially termed as “paraffins,” derived from the Latin words: parum, meaning “too little,” and affinis, meaning “affinity.”
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
6.3K
01:02Flame Photometry: Overview
530
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
530