Experimental method for the evaluation of the dynamic transfer matrix using pressure transducers
Experimental method for the evaluation of the dynamic transfer matrix using pressure transducers
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DOI：
10.1080/00221686.2015.1050076
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发表时间：
2015-07
影响因子：
2.3
通讯作者：
Keita Yamamoto;A. Müller;Takuya Ashida;K. Yonezawa;F. Avellan;Y. Tsujimoto
中科院分区：
文献类型：
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作者：
Keita Yamamoto;A. Müller;Takuya Ashida;K. Yonezawa;F. Avellan;Y. Tsujimoto
**摘要** 本文介绍了一种仅使用压力传感器评估动态传递矩阵的实验方法。通过不同流向位置的压差波动来评估流量波动。利用简单的流动配置确定阻力、惯性和顺应性元件的传递矩阵。然后通过将传递矩阵的各分量与理论值进行比较来验证该方法。结果表明，在系统的第一结构本征频率以下，对传递矩阵的直接测量能得到良好的结果。此外，还研究了波动的上游和下游流量的振幅比中与质量连续性的偏差。这种行为可以用一个考虑系统顺应性的简单模型来解释。
ABSTRACT This paper introduces an experimental method for the evaluation of dynamic transfer matrices using only pressure transducers. The discharge fluctuations are evaluated from the fluctuation of the pressure difference at different streamwise locations. The transfer matrices of the resistance, the inertance and the compliance elements are determined by using simple flow configurations. This method is then validated by comparing the transfer matrix components to theoretical values. The results show that the direct measurement of the transfer matrices produces good results below the first structural eigenfrequency of the system. Furthermore, a deviation from the mass continuity in the amplitude ratio of the fluctuating upstream and downstream discharges is investigated. This behaviour can be explained with a simple model taking into account the compliance in the system.