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<p>In order to analyze the dynamic state of powder particles during mixing in an acoustic resonance device, the author used RecurDyn to simulate the motion state of the acoustic resonance device during mixing, and the calculated motion data were fitted and imported into a Fluent model containing a powder cylinder. A two-way turbulence coupling model was used to couple the powder with the airflow and perform the calculation. Finally, the simulation results were verified using the prepared second-order acoustic resonance test bench. The research results show that: (1) The acoustic resonance model uses two excitation motors as the excitation source, which is amplified by the device. When the frequency reaches the resonance domain, the acoustic resonance device can operate normally for a long time, the experimental test data show that the amplitude of the powder mixing cylinder is amplified by the acoustic resonance device 4–6 times. In the simulation model, it can be observed that the powder particles move at high speed in the powder mixing cylinder in the form of micro-vortexes under the action of the acoustic resonance device and the airflow. (3) The coupling of powder and airflow requires the two-way turbulent flow coupling model to be turned on in the simulation to realize the interaction between powder and airflow. (4) The experimental results verify the correctness of the coupled simulation model. The experimental results show that the system vibration amplification factor in the experimental test and the observation of the powder movement are consistent with the simulation results.</p>

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Resonance dynamics study of powder–air flow coupling

  • 期刊论文

  • 发表日期：

    2025年10月25日

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  • Zongpeng Zhang,
  • Song Zhang,
  • Wanjian Yue,
  • Chao Zhou,
  • Yiheng Xue,
  • Bing Sun,
  • Jingwei Ran,
  • Lei Ran,
  • Zhanxian Wu,
  • Dongmin Zhu,
  • Rong Li

摘要

In order to analyze the dynamic state of powder particles during mixing in an acoustic resonance device, the author used RecurDyn to simulate the motion state of the acoustic resonance device during mixing, and the calculated motion data were fitted and imported into a Fluent model containing a powder cylinder. A two-way turbulence coupling model was used to couple the powder with the airflow and perform the calculation. Finally, the simulation results were verified using the prepared second-order acoustic resonance test bench. The research results show that: (1) The acoustic resonance model uses two excitation motors as the excitation source, which is amplified by the device. When the frequency reaches the resonance domain, the acoustic resonance device can operate normally for a long time, the experimental test data show that the amplitude of the powder mixing cylinder is amplified by the acoustic resonance device 4–6 times. In the simulation model, it can be observed that the powder particles move at high speed in the powder mixing cylinder in the form of micro-vortexes under the action of the acoustic resonance device and the airflow. (3) The coupling of powder and airflow requires the two-way turbulent flow coupling model to be turned on in the simulation to realize the interaction between powder and airflow. (4) The experimental results verify the correctness of the coupled simulation model. The experimental results show that the system vibration amplification factor in the experimental test and the observation of the powder movement are consistent with the simulation results.