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Active control of superposition of waves with time lagging and frequency difference: Numerical simulation

Publish Year: 1402
Type: Journal paper
Language: English
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JR_JCARME-13-1_009

Index date: 24 October 2023

Active control of superposition of waves with time lagging and frequency difference: Numerical simulation abstract

The theory of superposition of waves has been widely deployed in many engineering applications such as medical imaging, engineering measurements, and wave propagation in structures. However, these applications are prone to the interference of unwanted waves. The root cause of the weakness could be ascribable to the wave propagation pattern, which is not actively controlled. A new concept of imposing a time-lagging effect on the source of the wave as an active wave emission strategy is introduced and discussed in this paper. A numerical solver has been developed based on the finite volume Euler explicit method to investigate the wave propagation pattern when there is a time-lagged effect and frequency difference at the source of the wave. Our results reveal that time-lagged wave propagation will be more immune to the disturbance of other waves. The larger the time lag, the more resilient the wave is to resist the interference of other waves, even at a higher frequency. Time-lagged waves can be regarded as a promising active wave emission method that has many potential and robust engineering applications to be explored in the future.

Active control of superposition of waves with time lagging and frequency difference: Numerical simulation Keywords:

Active control of superposition of waves with time lagging and frequency difference: Numerical simulation authors

Yu Maan Kong

Department of Mechanical Engineering, Faculty of Engineering, Technology, and Built Environment, UCSI University, Cheras ۵۶۰۰۰ Kuala Lumpur, Malaysia

Wah Yen Tey

Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia Kuala Lumpur, ۵۴۱۰۰ Kuala Lumpur, MalaysiaGading, UCSI Heights (Taman Connaught), Cheras ۵۶۰۰۰ Kuala Lumpur, Malaysia

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