Effects of Heat Transfer on Thermodynamic Performance in Micro Swing Rotor Engine

  • XIA Chen ,
  • ZHANG Zhiguang ,
  • JIN Bo ,
  • HUANG Guoping ,
  • XU Jianhua
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  • College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

网络出版日期: 2025-10-28

基金资助

This work was supported by the National Basic Research Program of China (Grant No. 2014CB239602), the National Natural Science Foundation of China (Grant No. 51176072).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Effects of Heat Transfer on Thermodynamic Performance in Micro Swing Rotor Engine

  • XIA Chen ,
  • ZHANG Zhiguang ,
  • JIN Bo ,
  • HUANG Guoping ,
  • XU Jianhua
Expand
  • College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Online published: 2025-10-28

Supported by

This work was supported by the National Basic Research Program of China (Grant No. 2014CB239602), the National Natural Science Foundation of China (Grant No. 51176072).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

摘要

本研究通过数值分析,探讨了传热对微型摆动转子发动机(Micro Swing Rotor Engines, MSRE)热力性能的直接影响。为全面评估传热效应,本文采用了改进的热力模拟模型,结合回归相关公式,并引入流-热弱耦合方法,以获得更具工程实用性的解。数值结果表明,传热对MSRE性能具有显著影响。具体而言,温度循环曲线发生显著变化,在工作频率为100 Hz时,循环残余质量增加72.6%,进气质量下降10.55%。压力循环曲线主要在压缩和膨胀过程中受到影响,压缩阶段压力显著升高(最高达10.55 atm),而燃烧的贡献相对减弱。由此引起的变化使得压缩过程中的发动机功耗增加46.41%,整体热效率降低30.23%。此外,内壁温度每升高100 K,将导致发动机输出功率线性下降0.1 kW,热效率下降0.5%。为缓解上述问题,本文提出了实用的热管理策略,例如采用隔热涂层等方法。本研究强调了传热在MSRE运行中的关键作用,并为优化其热力性能提供了理论依据和设计思路,最高可实现54.68%的输出功率提升和12.79%的效率改善。

本文引用格式

XIA Chen , ZHANG Zhiguang , JIN Bo , HUANG Guoping , XU Jianhua . Effects of Heat Transfer on Thermodynamic Performance in Micro Swing Rotor Engine[J]. 热科学学报, 2025 , 34(6) : 1965 -1977 . DOI: 10.1007/s11630-025-2155-9

Abstract

This study investigates the direct impact of heat transfer on the thermodynamic performance of Micro Swing Rotor Engines (MSRE) through numerical analysis. To comprehensively address the influence of heat transfer, we employ a refined thermodynamic simulation model, incorporating a regressive correlation formula, and introduce a fluid-thermal weak coupling method to yield practical solutions. The numerical analysis reveals that heat transfer has profound effects on the performance of MSRE. Specifically, the temperature cycling curve experiences significant alterations, resulting in an increase in cycle-residual mass by 72.6% and a decrease in intake mass by 10.55% at a working frequency of 100 Hz. The pressure cycling curve is primarily affected during the compression and expansion processes, leading to a substantial rise in pressure during compression (reaching 1.055 MPa) while the contribution of combustion becomes less noticeable. Consequently, these changes increase engine power consumption during compression by 46.41% and reduce overall engine thermal efficiency by 30.23%. Additionally, an increase of the inner wall temperature by 100 K leads to a linear reduction in engine power by 0.1 kW and thermal efficiency by 0.5%. To mitigate these challenges, we propose practical heat management strategies, such as applying heat insulating coatings. The study underscores the critical roles of heat transfer in MSRE operation and provides insights for optimizing its thermodynamic performance, achieving a potential improvement of up to 54.68% in power output and 12.79% in efficiency.

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