Performance Characteristics of a Rotating Detonation Combustor Exiting Into a Pressurized Pleunum to Simulate Gas Turbine Inlet

IF 1.4 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Shaon Talukdar, Dalton Langner, Apurav Gupta, Ajay Agrawal
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Abstract

Abstract The present study aims to experimentally characterize the performance of a rotating detonation combustion (RDC) system integrated with a pressurized downstream plenum to simulate the high-pressure inlet conditions of power generating gas turbines. A thorough understanding of the operational behavior including wave mode behavior, static pressure profile along the combustor length, and dynamic features of pressure fluctuations is crucial for successful integration of RDC with the turbine. In this study, two RDC configurations are investigated, RDC with a constant area annulus and RDC with a converging nozzle. In both cases, the RDC flow exited into a plenum chamber kept at pressures varying from 155 kPa to 330 kPa. RDC was operated on methane and oxygen-enriched air to represent reactants used in land-based power generation. Experiments were conducted for the two RDCs configurations operated at three reactant mass flow rates (0.23, 0.32, 0.46 kg/s). The RDC performance is characterized by time-averaged static pressures measurements, and wave velocity determined by ionization probes. In addition, dynamic pressure measurements were recorded both inside and near the exit of RDC channel to investigate wave interactions between RDC and downstream plenum. Results show that the RDC with the converging nozzle achieved superior performance while minimizing detrimental interactions with the reflected shock and/or acoustic waves from the downstream plenum.
旋转爆轰燃烧室进入增压腔室模拟燃气轮机进口的性能特征
摘要本研究旨在通过实验表征旋转爆震燃烧(RDC)系统与加压下游静压室集成的性能,以模拟发电燃气轮机高压进口工况。深入了解RDC的运行特性,包括波型特性、沿燃烧室长度的静压分布以及压力波动的动态特性,对于RDC与涡轮的成功集成至关重要。在这项研究中,研究了两种RDC配置,即具有恒定面积环空的RDC和具有会聚喷嘴的RDC。在这两种情况下,RDC流都进入压力从155千帕到330千帕不等的充气室。RDC在甲烷和富氧空气中运行,以代表陆地发电中使用的反应物。实验以三种反应物质量流量(0.23、0.32、0.46 kg/s)下的两种rdc配置进行。RDC的性能是通过时间平均静压测量和电离探针确定的波速来表征的。此外,还记录了RDC通道内部和出口附近的动态压力测量,以研究RDC与下游静压室之间的波浪相互作用。结果表明,具有会聚喷嘴的RDC在最大限度地减少与下游静压室反射的冲击和/或声波的有害相互作用的同时,获得了卓越的性能。
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来源期刊
CiteScore
3.80
自引率
20.00%
发文量
292
审稿时长
2.0 months
期刊介绍: The ASME Journal of Engineering for Gas Turbines and Power publishes archival-quality papers in the areas of gas and steam turbine technology, nuclear engineering, internal combustion engines, and fossil power generation. It covers a broad spectrum of practical topics of interest to industry. Subject areas covered include: thermodynamics; fluid mechanics; heat transfer; and modeling; propulsion and power generation components and systems; combustion, fuels, and emissions; nuclear reactor systems and components; thermal hydraulics; heat exchangers; nuclear fuel technology and waste management; I. C. engines for marine, rail, and power generation; steam and hydro power generation; advanced cycles for fossil energy generation; pollution control and environmental effects.
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