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为了改善混波室低频时的性能,文中提出了基于声学理论的Schroeder散射体。通过FDTD数值仿真与实验相结合给出了不同频率散射体加入到装有搅拌器的混波室的前后场均匀性。分析了数值仿真与实验的结果,证明散射体能有效改善混波室中电场的均匀性尤其在较低频率下较为明显,拓展了给定混波室(由东南大学自主研发)最低使用频率(LUF)约100MHz,为改善混波室低频性能提供了思路。
In order to improve the performance of the low frequency mixing chamber, the paper presents a Schroeder scatterer based on acoustic theory. Through the combination of FDTD numerical simulation and experiment, the uniformity of front and back fields of different frequency scatterers added to the mixing chamber with agitator is given. The results of numerical simulation and experiment are analyzed. It is proved that the scatterer can effectively improve the uniformity of the electric field in the mixing chamber, especially at lower frequencies. The minimum frequency of use for a given mixing chamber (self-developed by Southeast University) (LUF ) About 100MHz, to improve the low frequency performance of the mixing chamber provides the idea.