Acoustic Nanowave Absorption through Clustered Carbon Nanotubes Conveying Fluid

详细信息    查看全文

• 作者：Zijun Zhang ; Yongshou Liu ; ^{yongshouliu@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Hailong Zhao ; Wei Liu
• 关键词：acoustic nanowave ; absorption ; meta-material ; clustered carbon nanotubes
• 刊名：Acta Mechanica Solida Sinica
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：29
• 期：3
• 页码：257-270
• 全文大小：3365 K

文摘

Absorption of acoustic nanowave in specific frequency region is important for the design of acoustic filter. This paper puts forward a meta material model made up of fluid-conveying carbon nanotubes (CNT), which can absorb acoustic nanowave in a given frequency range by adjusting the lengths and fluid velocities of themselves. Absorption coefficients are calculated out through the combination of the finite element method with the theoretical model, which are 0.4∼0.55 relating to different fluid velocities for the crossing-distributed model. Comparisons are made between the crossed model and the aligned one, which prove that the CNT forest with crossed distribution is more effective in acoustic wave absorption.