Search for collections on Undip Repository

UJI MODEL FISIK INTEGRATED ARTIFICIAL REEF CURVED BREAKWATER TERHADAP KOEFISIEN REFLEKSI-TRANSMISI-DISIPASI DAN OVERTOPPING UNTUK SISTEM PROTEKSI PANTAI (22o160)

SYACH, MUHAMMAD FIKRY (2022) UJI MODEL FISIK INTEGRATED ARTIFICIAL REEF CURVED BREAKWATER TERHADAP KOEFISIEN REFLEKSI-TRANSMISI-DISIPASI DAN OVERTOPPING UNTUK SISTEM PROTEKSI PANTAI (22o160). Undergraduate thesis, Universitas Diponegoro.

[img] Text
Cover Muhammad Fikry 22o160.pdf

Download (472kB)

Abstract

ABSTRAK
Muhammad Fikry Syach. 260 501 171 200 36. Uji Model Fisik Integrated
Artificial Reef Curved Breakwater terhadap Koefisien Refleksi-Transmisi-Disipasi
dan Overtopping untuk Sistem Proteksi Pantai. (Denny Nugoroho Sugianto dan
Dwi Haryo Ismunarti)
Kerusakan geomorfologi pesisir dan pantai berhubungan dengan
ketidakseimbangan ekologi pesisir yang disebabkan oleh perubahan ekosistem
pantai. Breakwater konvensional berfungsi sebagai perlindungan pesisir hard
approach yang fungsi hanya menjadi peredam energi gelombang untuk keperluan
pelabuhan atau sejenisnya. Integrated Artificial Reef-Curved Breakwater (IARC-b)
dirancang sebagai breakwater ramah lingkungan yang mampu melindungi
ekosistem terumbu karang buatan. Tujuan studi ini adalah untuk mengetahui debit
limpasan air (overtopping discharge), koefisien transmisi, koefisien refleksi,
koefisien energi disipasi gelombang terhadap perbedaan kedalaman, periode
gelombang, serta tata letak atau konfigurasi model pemecah gelombang berbentuk
lengkung terintegrasi dengan platform terumbu buatan (IARC-b) pada skala
laboratorium yang bertindak sebagai breakwater ramah lingkungan yang mampu
melindungi platform artificial reef dibelakangnya. Ada 36 skenario “dengan
model” IARC-b yang memiliki variasi 3 kedalaman (15, 17, 19)cm; 3 periode
gelombang (1,0; 0,8; 0,7)s; dan 4 konfigurasi tata letak model (A, B, C, D); juga
terdapat 9 skenario pengujian kalibrasi gelombang laut “tanpa model” sebagai data
acuan saat pengolahan data dengan skala model 1:40. Output parameter yang
digunakan ialah tinggi gelombang datang (Hi), kecuraman gelombang (Hi/L dan
H/gT2
), koefisien shoaling (Ks), dan tinggi freeboard (Rc). Debit limpasan air yang
melampaui model IARC-breakwater (q) pada konfigurasi (dengan puncak
bangunan lengkung) A adalah 2,22 ml/s [7.992 L/h] (volume overtopping 3,48 L)
dan konfigurasi C sebesar 2,23 ml/s [8.028 L/h] (volume overtopping 3,92 L)
selama 60 detik pengujian. Kr; Kt; dan Ked pada d=15 cm sebesar (26,42%; 33,7%;
39,81%); pada d=17 cm sebesar (22,64%; 32,24%; 45,11%); pada d=19 cm
(16,1%; 32,3%; 51,4%). Pada perbedaan periode gelombang uji nilai Kr; Kt; dan
Ked pada T=1,0s adalah (21,17%; 31,5%;46,6%); pada T=0,8s adalah (19,5%;
33,4%; 47%); pada T=0,7s sebesar (22%; 33,3%; 42,7%). Perbedaan nilai Kr;Kt;
dan Ked pada variasi konfigurasi model IARC-b adalah; konfigurasi A (21,1%;
30%; 48,9%); konfigurasi B (22,4%; 30,4%; 47,1%); konfigurasi C (22,3%; 37%;
41%); dan konfigurasi D (21%; 33,7%; 45,2%). Berdasar data tersebut, model
IARC-b mampu melindungi platform artificial reef yang terletak pada belakang
bangunan (Kr<30%; Kt<45%; Ked>30% dan q≤4,167 ml/s [q≤15 L/h]).
Kata Kunci : Koefisien Refleksi-Transmisi-Disipasi, Limpasan Air, Pemecah
Gelombang IARC, Terumbu Buatan, Model Fisik.

ABSTRACT
Muhammad Fikry Syach. 260 501 171 200 36. Physical Model Experiment of
Integrated Artificial Reef-Curved Breakwater to Reflection-Transmission�Dissipation Coefficient and Overtopping for Coastal Protection System (Denny
Nugoroho Sugianto dan Dwi Haryo Ismunarti)
Coastal geomorphological damage is related to coastal ecological
imbalances caused by changes in coastal ecosystems. Conventional breakwater
functions as a hard approach coastal protection whose only to reduce wave
energy for port purposes and et cetera. Integrated Artificial Reef-Curved
Breakwater (IARC-b) is designed as an environmentally friendly breakwater that
can protect artificial coral reef ecosystems. The purpose of this study was to
determine the overtopping discharge, transmission coefficient, reflection
coefficient, wave dissipation energy coefficient to different depths, wave periods,
as well as the layout or configuration of the curved breakwater model integrated
with artificial reef platforms (IARC-b) on laboratory scale which acts as an
environmentally friendly breakwater capable of protecting the artificial reef
platform behind it. There are 36 scenarios “with the model” IARC-b which have 3
depth variations (15, 17, 19)cm; 3 wave periods (1.0; 0.8; 0.7s); and 4 model
layout configurations (A, B, C, D); There are also 9 calibration test scenarios
"without a model" as reference data when processing data with 1:40 model scale.
The output parameters used are incident wave height (Hi), wave steepness (Hi/L
and H/gT2), shoaling coefficient (Ks), and freeboard height (Rc). The runoff
discharge that exceeds the IARC- breakwater model (q) in configuration (with a
curved top) A is 2.22 ml/s [7,992 L/h] (overtopping volume 3.48 L) and
configuration C is 2.23 ml /s [8.028 L/h] (overtopping volume 3.92 L) for 60
seconds of testing. Cr; Ct; and Ced at d=15 cm by (26.42%; 33.7%; 39.81%); at
d=17 cm by (22.64%; 32.24%; 45.11%); at d=19cm (16.1%; 32.3%; 51.4%). At
the difference in the period of the test wave the value of Cr; Ct; and Ced at
T=1.0s are (21.17%; 31.5%; 46.6%); at T=0.8s are (19.5%; 33.4%; 47%); at
T=0.7s by (22%; 33.3%; 42.7%). The difference in the value of Cr; Ct; and Ced
in the configuration variation of the IARC-b model are; configuration A (21.1%;
30%; 48.9%); configuration B (22.4%; 30.4%; 47.1%);configuration C (22.3%;
37%; 41%); and configuration D (21%; 33.7%; 45.2%). Based on these data, the
IARC-b model can protect the artificial reef platform located at the back of the
model (Kr<30%; Kt<45%; Ked>30% and q≤4.167 ml/s [q≤15 L/h]).
Keywords : Reflection-Transmission-Dissipation Coefficient, Overtopping, IARC
Breakwater, Artificial Reef, Physical Model.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Koefisien Refleksi-Transmisi-Disipasi, Limpasan Air, Pemecah Gelombang IARC, Terumbu Buatan, Model Fisik, Reflection-Transmission-Dissipation Coefficient, Overtopping, IARC Breakwater, Artificial Reef, Physical Model
Subjects: Fisheries And Marine Sciences
Divisions: Faculty of Fisheries and Marine Sciences > Department of Oceanography
Depositing User: pancasila wati
Date Deposited: 11 Sep 2023 07:46
Last Modified: 11 Sep 2023 07:46
URI: https://eprints2.undip.ac.id/id/eprint/16176

Actions (login required)

View Item View Item