Impact of THz Frequency on Underwater Acoustic Wave Propagation for Short Range Wireless Applications

Authors

  • Md Rabiul Awal Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia
  • Muhammad Syarifuddin Yahya Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia
  • Nurafnida Afrizal Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia
  • Ahmad Zaki Annuar Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia
  • Wan Hafiza Wan Hassan Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

DOI:

https://doi.org/10.37934/cfdl.13.11.116125

Keywords:

Acoustic wave propagation, ZnO, Seawater Medium, Impedance Mismatch, Finite Element Analysis

Abstract

Acoustic propagation in seawater is an important aspect of scientific investigation. However, the impact of the THz scale frequencies for acoustic propagation is not included in the studies. Thus, a finite element analysis of such propagation in a seawater medium is presented in this paper applying THz frequencies. A transmitter (circular with a diameter of 14 mm, a thickness of 3 mm) and a rectangular receiver (20×10×0.5 mm3) are designed to trace the variations in the propagation mediums. A propagation medium of seawater (70×40×60 mm3) with ice and softwood is modelled. A scale of frequencies (1 kHz to 1 THz) is applied to trace the impact on the propagation pattern. It is found that THz range frequencies provide a very small wavelength. As a result, the potential propagation distance is very small. As such, the sound pressure level, displacements of the receiver and pressure field shows very rapid drops in the magnitude. This work considers only 70 mm as propagation distance, yet the sharp decrement of performance parameters suggests that it is rather inconvenient to achieve useful efficiency using THz frequencies for acoustic propagation. 

Author Biographies

Md Rabiul Awal, Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

rabiulawal1@gmail.com

Muhammad Syarifuddin Yahya, Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

syarif_yahya@umt.edu.my

Nurafnida Afrizal, Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

nurafnida@umt.edu.my

Ahmad Zaki Annuar, Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

zannuar@umt.edu.my

Wan Hafiza Wan Hassan, Faculty of Ocean Engineering, Technology and Informatics, Universiti Malaysia Terengganu (UMT), 21030 Kuala Nerus, Terengganu, Malaysia

whafiza@umt.edu.my

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Published

2021-11-23

How to Cite

Md Rabiul Awal, Muhammad Syarifuddin Yahya, Nurafnida Afrizal, Ahmad Zaki Annuar, & Wan Hafiza Wan Hassan. (2021). Impact of THz Frequency on Underwater Acoustic Wave Propagation for Short Range Wireless Applications. CFD Letters, 13(11), 116–125. https://doi.org/10.37934/cfdl.13.11.116125

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