Two-Dimensional Characteristics of Wave Action as a Preliminary Study for Physical Modelling of Gabion-Type Breakwater Stability

EasyChair Preprint 15106

Abstract

In the initial stage of research on the physical modeling of gabion-type breakwater stability, preliminary experiments on simulated wave generation in various variations of wave deviation and variations in water depth in the wave channel in the laboratory have been carried out. The purpose of this research is to understand the wave characteristic model that will be used in the simulation of the gabion-type breakwater physical model. The research was conducted on a regular wave channel of tilting flume type with 15 m length, 30 cm width, and 45 cm glass wall height. The regular wave flume is equipped with an adjustable stroke and variator to obtain variations in wave height and period. Wave generation simulation was conducted with stroke variations (St) of 7 cm, 8 cm and 9 cm, while variations for wave period (T) were 1 second, 1.1 second and 1.2 second and water depth (d) was 20 cm, 25 cm and 30 cm. The generated wave height was recorded with a data logger through 3 wave probes placed at the base, centre and end of the flume. Data logger calibration was performed to convert the generated voltage unit into length unit. The relative depth (d/L) that can be applied in this flume is 0.05 - 0.25 which has similarities with the transition sea model according to the prototype placement plan in the field. The experimental results show that the larger the value of (d/L) 0.132-0.219), the smaller the wave reflection (Kr = 0.070 - 0.246).

Keyphrases: two-dimensional, water depth, wave model

@booklet{EasyChair:15106,
  author    = {Muhammad Muhammad and Muhammad Saleh Pallu and Muhammad Arsyad Thaha and Hasdinar Umar},
  title     = {Two-Dimensional Characteristics of Wave Action as a Preliminary Study for Physical Modelling of Gabion-Type Breakwater Stability},
  howpublished = {EasyChair Preprint 15106},
  year      = {EasyChair, 2024}}