Kadri, Usama ![]() ![]() |
![]() |
PDF
- Published Version
Available under License Creative Commons Attribution. Download (1MB) |
Abstract
Time reversal of free-surface water (gravity) waves due to a sudden change in the effective gravity has been extensively studied in recent years. Here, we show that an analogy to time-reversal can be obtained using nonlinear acoustic-gravity wave theory. More specifically, we present a mathematical model for the evolution of a time-reversed gravity wave packet from a nonlinear resonant triad perspective. We show that the sudden appearance of an acoustic mode in analogy to a sudden vertical oscillation of the liquid film, can resonate effectively with the original gravity wave packet causing energy pumping into an oppositely propagating (time-reversed) surface gravity wave of an almost identical shape.
Item Type: | Article |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Mathematics |
Publisher: | MDPI |
ISSN: | 2311-5521 |
Date of First Compliant Deposit: | 23 May 2019 |
Date of Acceptance: | 13 May 2019 |
Last Modified: | 05 May 2023 00:54 |
URI: | https://orca.cardiff.ac.uk/id/eprint/122772 |
Citation Data
Cited 2 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |