Investigation of rotating detonation gas turbine cycle with different combustor passage areas

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE Aerospace Science and Technology Pub Date : 2024-07-29 DOI:10.1016/j.ast.2024.109432

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Abstract

Application of rotating detonation combustion can significantly enhance gas turbine performance, but the limited flow capacity caused by normally aspirated characteristic of rotating detonation combustor (RDC) severely constrains the operating range of gas turbine. In this paper, the detailed investigation was carried out for the influence of RDC passage area on cycle characteristic parameters for a 25MW single shaft gas turbine. The results demonstrated that changes of RDC passage area had a significant impact on operating range of rotating detonation gas turbine. As RDC passage area increased, operating range of gas turbine moved to the higher power, with the slight increases for cycle efficiency, cycle efficiency increment and net power increment compared to traditional gas turbine at identical net power. For the process when RDC passage area decreased from 0.0272 m² to 0.0240 m², the lower working limit of rotating detonation gas turbine decreased to 53.3 % of rated power, in which equivalence ratio of RDC replaced turbine efficiency as the greatest influence factor on cycle efficiency increment.

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不同燃烧器通道面积的旋转爆燃燃气轮机循环研究

旋转爆燃燃烧的应用可显著提高燃气轮机的性能，但旋转爆燃燃烧器（RDC）的常吸气特性导致的有限流量严重限制了燃气轮机的运行范围。本文详细研究了 RDC 通道面积对 25MW 单轴燃气轮机循环特性参数的影响。结果表明，RDC 通道面积的变化对旋转爆燃式燃气轮机的运行范围有显著影响。随着 RDC 通道面积的增加，燃气轮机的运行范围向大功率方向移动，与相同净功率下的传统燃气轮机相比，循环效率、循环效率增量和净功率增量略有增加。对于 RDC 通道面积从 0.0272 m 减小到 0.0240 m 的过程，旋转爆燃式燃气轮机的工作下限下降到额定功率的 53.3%，其中 RDC 的等效比取代了涡轮机效率，成为循环效率增量的最大影响因素。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.