Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Holkema, K. J.; Aalbers, C.; Wellens, P.R.

doi:10.3233/ISP-230012

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Title

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Author

Holkema, K. J. (Student TU Delft; Allseas)
Aalbers, C. (Allseas)
Wellens, P.R. (TU Delft Ship Hydromechanics and Structures)

Date

2023

Abstract

In head waves, water jet impacts due to run up can occur as a result of the structural configuration of some floating structures, reducing workability. Wave attenuation near the floater may reduce the risk of water jet impacts. This paper presents a numerical study of the performance and attenuation mechanisms of various plate type fixed free surface breakwaters and their ability to prevent water jet impacts on adjacent structures. Simulations are performed in two dimensions with a numerical method based on the Navier–Stokes equations in the presence of a free surface. The breakwater models are evaluated in two irregular sea states in terms of wave transmission, reflection and energy dissipation and by their ability to reduce water jets impacts on adjacent structures. A 60 degree inclined plate is found to induce a large wave energy reduction, little wave transmission and reflection and to experience little wave loading while effectively reducing water jet impacts.

Subject

CFD
floating breakwater
jet formation
plate breakwater
VOF
Wave impact

To reference this document use:

http://resolver.tudelft.nl/uuid:f0fd1e1b-79be-4fba-b7b6-5549e295acbd

DOI

https://doi.org/10.3233/ISP-230012

ISSN

0020-868X

Source

International Shipbuilding Progress, 70 (2), 67-80

Part of collection

Institutional Repository