Cooling design and optimization of a novel swirl-stabilized trapped vortex combustor with compound-angled effusion cooling configuration

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-05-11 DOI:10.1016/j.applthermaleng.2025.126746

Xuanwu Chen , Tao Gui , Qinghua Zeng , Jun Tang , Pengfu Xie

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引用次数: 0

Abstract

Swirl-stabilized trapped vortex combustors (STVC) are promising for high-temperature-rise (HTR) combustors but reliable thermal protection under high fuel-to-air ratio remains a key challenge. Although compound-angled effusion cooling performs well in simplified setups, its effect in STVCs under realistic HTR conditions remains insufficiently explored. This study proposes a novel STVC with compound-angled effusion cooling configuration to enhance cooling effectiveness and optimize combustor wall temperatures. Numerical simulations, verified by experiments, were employed to investigate the flow, combustion, and wall temperature characteristics under different compound-angled effusion cooling configurations. The results reveal that compound-angle cooling jets significantly influence the vortex stability in the cavity, enhancing cooling performance on the outer liner through a film-stacking effect while disrupting the trapped vortex in the cavity. By optimizing the cooling configuration based on these insights, the maximum wall temperature was reduced by 528 K compared to the baseline design. The key innovation of this study lies in the integration of swirl-stabilized trapped vortex combustion with compound-angled effusion cooling, providing an effective solution for thermal protection in HTR combustors and offering guidance for advanced combustor cooling design.

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一种新型复合角射流稳定陷涡燃烧室的冷却设计与优化

涡流稳定陷涡燃烧器（STVC）在高温上升（HTR）燃烧室中具有广阔的应用前景，但在高燃料空气比下可靠的热保护仍然是一个关键挑战。虽然复合角度射流冷却在简化装置中表现良好，但其在实际高温堆条件下的stvc中的效果仍未得到充分探讨。为了提高冷却效率，优化燃烧室壁面温度，提出了一种采用复合角度射流冷却结构的新型STVC。通过数值模拟研究了不同复合角度射流冷却方式下的流动、燃烧和壁面温度特性，并得到了实验的验证。结果表明，复合角冷却射流对腔内涡稳定性有显著影响，通过膜层叠加效应提高了外衬的冷却性能，同时破坏了腔内被困涡。通过基于这些见解优化冷却配置，与基线设计相比，最大壁温降低了528 K。本研究的关键创新点在于将旋流稳定陷涡燃烧与复合角度射流冷却相结合，为高温高温堆燃烧室的热防护提供了有效的解决方案，为先进的燃烧室冷却设计提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.