The effects of blockage on the propagation of acoustic waves in the liquid-shell coupled system

Wenbo Duan, Fengshou Gu, Iain Dupère, Shan Zhong, Andrew Ball

Research output: Contribution to journalArticle

1 Citation (Scopus)


The free vibration of a fluid/structure system consisting of a cylindrical blockage submerged in a liquid enclosed by a cylindrical shell is investigated for the purpose of pipe line transportation monitoring. The wavenumbers are obtained and the reflection and transmission characteristics of these waves at the blockage interfaces are investigated theoretically. Reflection and transmission ratios are obtained in the axisymmetric mode, as functions of frequency. High order modes play an important role in the near field of the discontinuity and are taken into account.

Original languageEnglish
Pages (from-to)327-333
Number of pages7
JournalKey Engineering Materials
Publication statusPublished - 2009


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