Analysis of the pressure at a vertical barrier due to extreme wave run-up over variable bathymetry. Issue 5 (September 2017)

• Record Type: Journal Article
• Authors: Brennan, J.; Clancy, C.; Harrington, J.; Cox, R.; Dias, F.
• Is Part Of: Theoretical & applied mechanics letters. Volume 7:Issue 5(2017)
• Page Start: 269
• Page End: 275
• Publication Date: 2017-09
• Subjects: Wave−wall interaction -- Wave run-up -- Pressure -- Extreme waves; Mechanics, Applied -- Periodicals; Mechanics, Analytic -- Periodicals; Mechanics, Analytic; Mechanics, Applied; Periodicals; 620.1
• DOI: 10.1016/j.taml.2017.11.001
• Languages: English
• ISSNs: 2095-0349

Abstract

Abstract: The pressure load at a vertical barrier caused by extreme wave run-up is analysed numerically, using the conformal mapping method to solve the two-dimensional free surface Euler equations in a pseudo-spectral model. Previously this problem has been examined in the case of a flat-bottomed geometry. Here, the model is extended to consider a varying bathymetry. Numerical experiments show that an increasing step-like bottom profile may enhance the extreme run-up of long waves but result in a reduced pressure load. Highlights: Ocean waves may be amplified as they approach coasts across steep bathymetry, leading to extreme run-up heights.