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Flow-Induced NVH Analysis

  • Noise and Vibration Problem in a Dynamic Valve
    • Physical problem (noise and vibration occurs when the liquid-gas flow involved)

                 DynamicValve.jpg

  • Geometry simplification and meshing

            Geometry.jpg

  • Comparison of flow signal and noise signal

       1.jpg

                            Hilbert-Huang Transform result of pressure signal

           Noisesignal.jpg

                                       Spectral analysis result of noise signal

 

 

 

    

 

 

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