In view of that the plane wave theory is suitable only in lower frequency range, the three-dimensional finite element method is applied to analyze the acoustic characteristics of air cleaner in the present study for broadening the frequency range.
In view of that the plane wave theory is suitable only in lower frequency range, the three-dimensional finite element method is applied to analyze the acoustic characteristics of air cleaner in the present study for broadening the frequency range.
由于一维平面波理论只适于低频分析，为了扩大分析的频率范围，采用了三维有限元数值方法分析空气滤清器的声学特性。