| 由波模频移确定矩形管道沉积层的厚度 |
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| 引用本文： | 尹业安,K.V.Horoshenkov.由波模频移确定矩形管道沉积层的厚度[J].应用声学,2008,27(5):358-362. |
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| 作者姓名： | 尹业安 K.V.Horoshenkov |
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| 作者单位： | 1. 武汉科技学院,计算机科学学院,武汉,430079
2. 英国布拉福德大学工程学院 |
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| 基金项目： | 英国工程和物理科学研究委员会研究项目资金 |
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| 摘 要： | 提出了用波模的频率偏移求矩形管道中沉积层厚度的方法。在已知无沉积层矩形管道内横截面的情形下,将测量的波模频率与用有限元计算得到的波模频率进行比对,确定沉积层的厚度。给出了有限元计算结果以及实验结果(长15m,截面为449mm×425mm的矩形管道,沉积层厚度分别为40mm和60mm)及其相对误差。实验和有限元计算的结果有很好的一致性,验证了本方法的正确性。
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| 关 键 词： | 波模频移 矩形管道 沉积层厚度 有限元 |
Determination of layer's thickness in a rectangular pipe by modal frequencies' shifts |
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| YIN Ye-An and K.V.Horoshenkov.Determination of layer''s thickness in a rectangular pipe by modal frequencies'' shifts[J].Applied Acoustics,2008,27(5):358-362. |
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| Authors: | YIN Ye-An and KVHoroshenkov |
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| Institution: | YIN Ye-An1 K.V.Horoshenkov2 (1 College of Computer Science,Wuhan University of Science and Engineering,Wuhan 430079)(2 School of Engineering,Design and Technology,University of Bradford,UK) |
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| Abstract: | This article proposes a method to determine the thickness of the sediment in a rectangular pipe by modes’ frequencies shifts.By comparing the measured modes’ fre- quencies to that calculated by FEM,the thickness of the layer can be determined.Compari- son results calculated by FEM to the measured data(with a 15m long,449mm×425mm rectangular pipe,40 and 60 mm sediment layer)are also given.The results show that they match very well and the method is validated. |
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| Keywords: | Modal frequency shift Rectangular pipe Sediment thickness FEM |
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