On the predictability of the notional permeability of breakwaters as a function of core properties

On the predictability of the notional permeability of breakwaters as a function of core properties

Franken, J.T.

Uijttewaal, W.S.J. (mentor)

Civil Engineering and Geosciences

Hydraulic Engineering

2016-09-30

To determine the nominal diameter of armour rock for a rubble mound breakwater, the ‘Van der Meer’-formula is frequently used. It requires the so-called 'notional permeability' parameter P, which has been defined for a limited number of structures. Often designed structures deviate from these defined lay-outs. To determine the notional permeability of these intermediate structures, various hypotheses have been proposed. In this thesis, the IH-2VOF numerical model is used to predict the notional permeability for a range of intermediate structures based on the various hypothesizes. The hypothesizes used are indirect methods based on the ‘hypothetical’ flow into the core and prediction of the reflection coefficient. Numerical simulation have been made for structures with varying core layer (thickness and nominal stone diameter) loaded by varying wave periods.

Notional permeability
Van der Meer
IH-2VOF
Flow into the core
Reflection coefficient
Rubble mound breakwater
Interpolation

http://resolver.tudelft.nl/uuid:29e8291c-b84e-4500-b753-ac6c8b21ced0

Student theses

master thesis

(c) 2016 Franken, J.T.