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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (16): 27923-027923.doi: 10.7527/S1000-6893.2022.27923

• Reviews •     Next Articles

Review of porous media used in flow control and aerodynamic noise reduction

Hanru LIU1(), Nanshu CHEN1, Yu LIU2, Zhijie HU1   

  1. 1.School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China
    2.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China
  • Received:2022-08-15 Revised:2022-08-29 Accepted:2022-10-09 Online:2022-11-20 Published:2022-11-17
  • Contact: Hanru LIU E-mail:hrliu@nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51506179)

Abstract:

Flow control is an important research field in aerodynamics, and will become a new means for aerodynamic gain design for future aircraft and power plants. Bionics-inspired porous media treatment is a promising passive flow control technology with significant potential for flow control and aerodynamic noise reduction. Firstly, the origin and motivation of porous media used in flow and noise control are reviewed, and then the configurations and modeling methods of different type of porous media are clarified. Subsequently, structure design and effectiveness of application of porous media for flow control and aerodynamic noise reduction of blunt body external flow, isolated airfoil and rotating machinery are explored based on domestic and overseas research. Current research has shown that porous media has better flow improvement and noise reduction capabilities with suitable structural design, material properties and working conditions. However, there is no mature design theory to guide the application of porous media, and more extensive research on applicable conditions is also lacking. Multi-scale coupling flow and eddy dynamics research are very important for in-depth understanding of the change of flow source and noise reduction mechanism by porous media. Further optimization of the internal configuration, macro-parameters and design pattern of porous media is important and urgent work in future to advance the application of this technology to engineering.

Key words: porous media, passive flow control, aeroacoustics, noise control, turbomachinery noise

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