The transmission spectrum of sound through a phononic crystal subjected to liquid flow | Zendy

Nico F. Declercq | Zendy; Lynda Chehami | Zendy; Rayisa P. Moiseyenko | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The transmission spectrum of sound through a phononic crystal subjected to liquid flow

Author(s) -

Nico F. Declercq,

Lynda Chehami,

Rayisa P. Moiseyenko

Publication year - 2018

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.5017168

Subject(s) - materials science , crystal (programming language) , flow (mathematics) , transmission (telecommunications) , sound transmission class , band gap , liquid crystal , spectral line , amplitude , optics , acoustics , condensed matter physics , molecular physics , mechanics , optoelectronics , physics , telecommunications , programming language , astronomy , computer science

The influence of liquid-flow up to 7 mm/s is examined on transmission spectra of phononic crystals, revealing a potential use for slow liquid-flow measurement techniques. It is known that transmission of ultrasound through a phononic crystal is determined by its periodicity and depends on the material characteristics of the crystal's constituents. Here, the crystal consists of metal rods with the space in between filled with water. Previous studies have assumed still water in the crystal, and here, we consider flowing liquid. First, the crystal bandgaps are investigated in still water, and the results of transmission experiments are compared with theoretical band structures obtained with the finite element method. Then, changes in transmission spectra are investigated for different speeds of liquid flow. Two situations are investigated: a crystal is placed with a principal symmetry axis in the flow direction ( ΓX) and then at an angle ( ΓM). The good stability of the bandgap structure of the transmission spectrum for both directions is observed, which may be of importance for the application of phononic crystals as acoustic filters in an environment of flowing liquid. Minor transmission amplitude changes on the other hand reveal a possibility for slow liquid flow measurements.The influence of liquid-flow up to 7 mm/s is examined on transmission spectra of phononic crystals, revealing a potential use for slow liquid-flow measurement techniques. It is known that transmission of ultrasound through a phononic crystal is determined by its periodicity and depends on the material characteristics of the crystal's constituents. Here, the crystal consists of metal rods with the space in between filled with water. Previous studies have assumed still water in the crystal, and here, we consider flowing liquid. First, the crystal bandgaps are investigated in still water, and the results of transmission experiments are compared with theoretical band structures obtained with the finite element method. Then, changes in transmission spectra are investigated for different speeds of liquid flow. Two situations are investigated: a crystal is placed with a principal symmetry axis in the flow direction ( ΓX) and then at an angle ( ΓM). The good stability of the bandgap structure of the transmission ...

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research