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All Journal BULETIN OSEANOGRAFI MARINA KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Ilmiah Desain & Konstruksi Jurnal Teknik ITS Journal of Marine Research IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science REKAYASA Jurnal Teknik Sipil Journal of Geoscience, Engineering, Environment, and Technology IJOCE (International Journal of Offshore and Coastal Engineering) JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Kelautan Nasional Wave: Jurnal Ilmiah Teknologi Maritim JURNAL TEKNIK HIDRAULIK Dinasti International Journal of Economics, Finance & Accounting (DIJEFA) COJ (Coastal and Ocean Journal) Jurnal Locus Penelitian dan Pengabdian Makara Journal of Technology Sewagati Geosfera Indonesia
Haryo Dwito Armono
Departemen Teknik Kelautan, Institut Teknologi Sepuluh Nopember, Kampus ITS, Keputih, Sukolilo, Surabaya 60111
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Perilaku Deformasi Pemecah Gelombang Kantong Pasir Tipe Tenggelam Fatnanta, Ferry; Pratikto, Widi Agoes; Armono, Haryo Dwito; Citrosiswoyo, Wahyudi
Jurnal Teknik Sipil Vol 18, No 2 (2011)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1718.4 KB)

Abstract

Abstract. Breakwater is one of coastal structures to overcome problems of abrasion. Due to difficulties in obtaining rock material at the coast area, so the using of sandbags as a breakwater providing advantages in utilizing local materials. Therefore, the problem of the rock material supply can be overcome. The environmentally oriented conservation of the coastal protection is necessarily built without damaging the beauty of the coast itself. That is why this research on behavior of the stability of submerged sandbag breakwater is carried out this experimental research conducted in 2-D physical model and take place on the flume tank of Laboratory Ocean Engineering Department, ITS Surabaya for stability test, it shows that the deformation of the sandbags is influenced by the elasticity of sandbags which depends on its dimension and density. The sandbags size influences the grip zone. As a result, the deformation of sandbag depends on the wave forces, as a consequence of the change of slope and cross areas due to sandbags shape and formation type. The formation of SK1 has relatively high stability; the structure with mild slope is more stable, and the sandbag shapes B1 more stable than B2 Abstrak. Pemecah gelombang merupakan salah satu struktur pantai yang digunakan untuk mengatasi permasalahan abrasi. Namun sering sulit ditemukan material batuan di lokasi tersebut, maka penggunaan kantong pasir sebagai pemecah gelombang menguntung karena menggunakan material lokal. Sehingga permasalahan suplai material batuan dapat terselesaikan. Pengaman pantai yang berwawasan lingkungan sangat diperlukan untuk mengamankan pantai tanpa merusak pemandangan pantai. Oleh sebab itu penelitian ini melakukan studi mengenai perilaku stabilitas pemecah gelombang kantong pasir tipe tenggelam.Penelitian ini berbentuk pengujian model fisik 2-D skala lab, yang dilakukan di Flume Tank Laboratorium Jurusan Teknik Kelautan, ITS Surabaya. Pada uji stabilitas menunjukkan bahwa respon kantong pasir dipengaruhi oleh elastisitas kantong pasir, sedangkan elastisitas kantong pasir tergantung pada dimensi kantong dan kepadatan kantong. Ukuran kantong berpengaruh terhadap zona jepitan, dimana zona jepitan ini dipengaruhi oleh perbandingan panjang dan tebal kantong. Perilaku deformasi kantong pasir tergantung pada elastisitas kantong. Sesuai hasil pengujian, deformasi kantong pasir tergantung pada gaya yang bekerja pada kantong, jadi deformasi kantong dipengaruhi oleh kemiringan dan luas penampang kantong, sebagai akibat perubahan bentuk kantong dan jenissusunan. Jenis susunan SK1 mempunyai stabilitas relatif tinggi; struktur dengan kemiringan landai lebih stabil, dan bentuk kantong B1 lebih stabil dibandingkan bentuk B2 untuk susunan yang sama.
Comparison Study of Various Type Artificial Reef Performance in Reducing Wave Height Rifqi Fauzi, Muhammad Aldhiansyah; Armono, Haryo Dwito; Mustain, Mahmud; Amalia, Aniendhita Rizki
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3284

Abstract

Most fishermen used inappropriate methods to sustain their livelihoods, severely destroying fishery resources. Furthermore, a lack of environmental protection and pollution prevention lead the best coastal and estuarial nurseries to become unhabitable. Several studies have pointed out that fish stocks in coastal waters could be no longer sufficient for the increasing fishing activity and consumption requests. Based on the 1950–2006 global statistics conducted by Food and  Agriculture Organization of the United Nations (FAO) (2012).Artificial reefs are most often constructed to increase the efficiency of fishery resource harvest (Seaman and Sprague, 1991). In engineering practice, the stability of artificial reefs is an important issue in preventing the failure of reef units due to wave and current actions. Some of the artificial reefs have also been designed to serve as low-crested coastal protection structures (e.g. Dalrymple et al., 1991a; Ranasinghe et al., 2006). One particular advantage of these artificial reefs over the conventional submerged breakwaters is the fact that they are multi-purpose units and can be achieved with more cost-effective materials and environmentally friendly construction processes (Harris, 1995; Buccino et al., 2013). Artificial reef model keep looking for modification to get compatibility and efiiciency as submerged breakwater because  the feasibility of artificial reefs for coastal protection is typically evaluated based on the percentage of surface wave height reductionWave transformation analysis in artificial reef do with consideration from some non dimensional variables. Wave transmission process defined with ratio betwwen transmission wave height and incoming wave heightThis research compares 5 types of Artificial reef in numeric model. There are hexareef, bottle reef, star reef, seadome and cube reef. They are tested with Indonesian wave steepness which has value between 0,0013 and 0,012.
Transmission Coefficient Analysis of Notched Shape Floating Breakwater Using Volume of Fluid Method: A Numerical Study Ridlwan, Asfarur; Armono, Haryo Dwito; Rahmawati, Shade; Tuswan, Tuswan
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 1 (2021): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i1.34964

Abstract

As one of the coastal structures, breakwaters are built to protect the coastal area against waves. The current application of breakwaters is usually conventional breakwaters, such as the rubble mound type. Climate change, which causes tidal variations, sea level height, and unsuitable soil conditions that cause large structural loads, can be solved more economically by employing floating breakwater. In this study, numerical simulations will be conducted by exploring the optimum floating breakwater notched shapes from the Christensen experiment. The comparison of three proposed floating breakwater models, such as square notch (SQ), circular notch (CN), and triangular notch (VN), is compared with standard pontoon (RG) to optimize the transmission coefficient value is analyzed. Numerical simulations are conducted using Computational Fluid Dynamics (CFD) based on the VOF method with Flow 3D Software. Compared to the experimental study, the RG model's validation shows a good result with an error rate of 8.5%. The comparative results of the floating breakwater models are found that the smaller the transmission coefficient value, the more optimal the model. The SQ structure has the smallest transmission coefficient of 0.6248. It can be summarized that the SQ model is the most optimal floating breakwater structure.
Pengaruh Konfigurasi Terumbu Buatan Bentuk Heksagonal pada Kemampuan Peredaman Gelombang Wirayuhanto, Harish; Armono, Haryo Dwito
Rekayasa Vol 14, No 1: April 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i1.10042

Abstract

An artificial reef is a structure that is placed underwater and functions as a natural coral reef. Apart from being an artificial reef, the function of artificial reefs is also as a submerged breakwater. As a breakwater, it is necessary to know the level of effectiveness in reducing waves and the impact of scouring arising from the laying of artificial reef structures. This research was conducted to determine the correlation between the ability of wave attenuation to the depth of scouring due to variations in laying (structure gap distance) and variations in waves on artificial reefs in hexagonal shape with a scale model of 1:10. From the results of research conducted at the Marine Energy Laboratory of the Department of Marine Engineering, FTK ITS obtained, for laying structures with a gap of 1D, they have better wave attenuation capabilities with a small maximum scouring depth, namely with a Kt value of 0.844 and a scouring depth of 3 cm. For the laying of the structure with a distance of 0D, it has a greater value of transmission coefficient (Kt), which is 0.911 with a greater value of the maximum scouring depth, which is 3.5 cm.
Efek Koefisien Transmisi akibat Variasi Wave Stepness pada Hexagonal Artificial Reef Wirayuhanto, Harish; Armono, Haryo Dwito; Ridlwan, Asfafur; Febrianto, Try
Rekayasa Vol 14, No 3: Desember 2021
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v14i3.12485

Abstract

Waves that move towards the coast have an energy level that corresponds to the magnitude of the generating force. Waves with high energy intensity are dominantly destructive when they hit the coastal area. In order to reduce the destructive effect of waves, coastal protection structures are needed to dampen the wave energy. Artificial coral reef (artificial reef) is one type of structure that can reduce wave energy. Besides functioning as an artificial reef for marine ecosystem biota, but also as a submerged breakwater structure. This study was conducted to determine the relationship between wave stepness and the transmission coefficient produced by hexagonal artificial reefs with a model scale of 1:10. The test is carried out using regular waves with a range of H/gT2 values between 0.0007 – 0.006. The results of research conducted at the Marine Energy Laboratory of the Department of Marine Engineering, FTK ITS, show that an increase in the value of wave steepness correlates with an increase in the value of the transmission coefficient (Kt) for all tests and configurations. The 1D structure configuration has a lower transmission coefficient (Kt) than the 0D structure configuration for each variation of the test wave.
Model Gelombang di sekitar Hexagonal Artificial Reef sebagai Submerged Breakwater Menggunakan DUALSPHYSICS Armono, Haryo Dwito; Manurung, Adelbert; Sujantoko, Sujantoko
Rekayasa Vol 15, No 1: April 2022
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v15i1.13484

Abstract

The functions and uses of artificial reef have evolved from a method of coral reefs restoration to a coastal protection system. Artificial reef can reduce the hydraulic load on the coast to the level required to maintain shoreline balance. Various materials and shape of artificial reefs have been introduced. This paper discussed the wave transmission over hexagonal-shaped artificial reef with 6 holes on each side. The study was conducted using the Smoothed Particle Hydrodynamic (SPH) method integrated in DualSPHysics software to see the effect of gaps between structures with a predetermined configuration to the value of the transmission coefficient (Kt). It was found that the configuration with no gap was able to absorb waves better than the configuration with a gap of 0.15 m and 0.112 m based on the Kt value obtained. In terms of hydrodynamics, it was found that: (1) The increment of the wave steepness, the smaller the Kt value obtained, (2) The larger the wave height, the smaller the Kt value at 0.1 m freeboard depth, while on the freeboard with a depth of 0.2 m and 0.3 m, it was found that the greater the wave height, the greater the Kt value, (3) the increment of the wave period, the Kt were higher, and also (4) the higher the freeboard, the higher the Kt.
STUDI KARAKTERISKTIK GELOMBANG PADA FLOATING BREAKWATER TIPE TERPANCANG DAN TAMBAT Sujantoko Sujantoko; Wisnu Wardhana; Eko Budi Djatmiko; Haryo Dwito Armono; Wahyu Suryo Putro; Rizki Haryono A.
JURNAL TEKNIK HIDRAULIK Vol 12, No 1 (2021): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v12i1.650

Abstract

Floating breakwater (PGT) is designed to be applied as a wave barrier to reduce beach abrasion and wave energy so that waves coming to the beach have their energy reduced. Compared to conventional breakwater structures, PGT structures are more advantageous if the area to be protected from impact waves has a large enough depth. This structure is more flexible because the elevation follows the tides, so this structure can be used as a wharf at the same time. It is also free from the scouring and sedimentation that often occurs on the feet of conventional breakwater structures. This study aims to attenuate and reflect waves from various PGT configurations of piling and mooring types, by testing the physical model of PGT in the wave flume laboratory of the Department of Ocean Engineering ITS, at a water depth of 80 cm, a wave height of 3.5-5.5 cm, a wave period of 0.5-2 seconds, and the angle of the mooring rope (45o, 60o, 90o). PGT is arranged in a variety of longitudinal and transverse directions to the coast. Based on the experiment, it is known that the effect of configuration and width on the PGT structure on wave transmission and reflection is influenced by the mooring angle. Configuration 3 with the largest width can give the best transmission coefficient Kt = 0.797 at 45o mooring angle and reflection coefficient Kr = 0.572 at 90o mooring angle. In type 3 fixed-configuration gives the greatest value Kt = 0.431-0.623 and Kr = 0.053-0.997 compared to other configurations. Because in configurations 1 and 2 the back of the structure is not supported by piles, so a swing occurs which generates waves. While the effect of the slope of the wave, Kt will increase as the number of waves slopes decreases, conversely the value of Kt decreases with the increase in the slope of the wave.Keywords: Floating breakwater, piling, tethered,  mooring 
Analisa Perubahan Garis Pantai Jasri, Kabupaten Karangasem Bali Rachmat Hidayah; Suntoyo Suntoyo; Haryo Dwito Armono
Jurnal Teknik ITS Vol 1, No 1 (2012)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (753.973 KB) | DOI: 10.12962/j23373539.v1i1.1996

Abstract

Pantai Jasri salah satu pantai di Pulau Bali yang mengalami perubahan garis pantai akibat kemunduran garis pantainya. Berdasarkan perubahan garis pantai dilakukan analisa perubahan garis pantai menggunakan metode On-Line Model Generalized Model for Simulating Shorline Change. Pada dasarnya sudah terdapat eksisting di Pantai Jasri, namun terjadi kegagalan struktur, sehingga masih terjadi erosi di pantai ini. Perlu adanya lternative penanganan mengenai permasalahan tersebut. Tugas akhir ini bertujuan untuk mengetahui perubahan garis pantai dan besarnya transport sedimen di Pantai Jasri, serta penanganan lternative yang harus dilakukan. Berdasarkan hasil pemodelan terjadi kegagalan struktur eksisting dimana terjadi kemunduran garis pantai secara signifikan pada pias 570 sepanjang 13.48 m selama 10 tahun, dan terjadi erosi pada pias 480-570 sebesar 13.310 m3 serta pada pias 870-960 sebesar 12.153 m3. Total sediment lternati yang terjadi selama 10 tahun adalah sebesar 11.063,40 m3 pada kondisi adanya eksisting. Setelah dilakukannya penambahan revertment, pada pias 480 – 570 terjadi pengurangan erosi yang awalnya 13.310 m3 menjadi 5.285 m3 dan pada pias 870-960 terjadi penambahan sediment sebesar 12.205 m3 dan total sediment transport yang terjadi selama 10 tahun terdapat pengurangan sebesar 11.063,40 m3.
Perangkat Lunak Untuk Analisis Gaya Gelombang Di Laboratorium Lingkungan Dan Energi Laut, Jurusan Teknik Kelautan, Ftk-Its Fendi Hidayat; Haryo Dwito Armono
Jurnal Teknik ITS Vol 2, No 2 (2013)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1176.846 KB) | DOI: 10.12962/j23373539.v2i2.4642

Abstract

Laboratorium Lingkungan dan Energi Laut, Jurusan Teknik Kelautan, FTK-ITS sering digunakan untuk pengujian. Salah satunya menguji gaya mooring pada floating breakwater. Hal tersebut menjadi salah satu alasan untuk membuat suatu perangkat lunak dalam membantu dalam proses analisis gaya mooring tersebut. Perangkat lunak yang dibuat berfungsi untuk membantu proses kalibrasi sensor load cell LUB-B 5 to 50 KB dan melakukan analisis gaya gelombang. Metode yang digunakan dalam penelitian ini adalah dengan menggunakan regresi linier, korelasi linier, perhitungan varian, standar deviasi, dan hukum Newton yang kemudian disusun dengan menggunakan Microsoft Visual Studio 2008. Penyusunan perangkat lunak yang bernama FORYS ini memiliki tampilan antarmuka pengguna yang mudah dalam pemakaian. Perangkat lunak yang telah dibuat juga bersifat portable sehingga bisa digunakan di berbagai komputer atau laptop. Hasil pengujian yang telah dilakukan menghasilkan bahwa semakin besar gaya gelombang yang terjadi, maka semakin besar pula tegangan yang terjadi pada tali.  
Beach Recreational Index Untuk Pantai – Pantai Di Kabupaten Serdang Bedagai, Sumatera Utara Akbar Fitrah Dermawan; Haryo Dwito Armono; Arief Suroso
Jurnal Teknik ITS Vol 2, No 2 (2013)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1647.055 KB) | DOI: 10.12962/j23373539.v2i2.4717

Abstract

Penelitian ini bertujuan untuk menghitung nilai beach recreational index pada pantai wisata yang telah ditentukan oleh parameter beach indicators (BI), beach user’s perception (KI), dan indikator dari beach economic value (MI) sehingga menjadi integrated beach value index (IBVI). Indeks evaluasi ini telah diterapkan di tiga pantai berbeda (Pantai Cermin, Pondok Permai, dan Sri Mersing ). Berdasarkaan pada evaluasi IBVI, Pantai Sri Mersing adalah yang terbaik dengan rata-rata nilai range medium lebih tinggi, dan diikuti oleh Pantai Cermin dengan nilai yang tidak terlalu signifikan selisihnya. Pantai yang belum berkembang dengan maksimal adalah Pantai Pondok Permai dengan nilai medium rata-rata pada BI, KI dan MI. Sedangkan parameter yang paling berpengaruh dalam indeks evaluasi adalah ketersediaan fasilitas yang ada pada pantai wisata. IBVI dapat digunakan sebagai perbandingan antara pantai wisata satu dengan yang lainnya, juga sebagai evaluasi untuk meningkatkan indeks evaluasi pantai pantai wisata.
Co-Authors Adryani, Ayu Agoes Pratikto Agustifa, Filda Nurria Akbar Fitrah Dermawan Amalia, Aniendhita Rizki Ammara Tandhiarchita Arief Suroso Asfarur Ridlwan Daniel M. Rosyid Daniel M. Rosyid Danny Indra Setyawan Dedi Kurniawan Dinar Catur Istiyanto Dinar Catur istiyanto Dinda Amalia Rahmawati Dwi Budi Wiyanto Eko Budi Djatmiko Eko Yusroni Faddillah Prahmadana Rudyani Faliha Husna Farid Kamal Muzaki Fendi Hidayat Ferry Fatnanta Hanah Khoirunnisa Hasan Ikhwani Hasan Ikhwani Hasan Ikhwani Ismail Ali Hajar Aswad Ali Juventus Welly Ginting Juventus Welly Radianta Ginting Khusnul Setia Wardani Kriyo Sambodho Kurniati, Nani Mahmud Mustain Manurung, Adelbert Mardi Wibowo Maulinna Kusumo Wardhani Maulinna Kusumo Wardhani, Maulinna Kusumo Mudzakkir Maulana Rachman Muhamad Eriq Ashari Muhammad Baharudin Fahmi Muhammad Iqbal Muhammad Rifqi Hanif Muhammad Zikra Muhammad Zikro Mukhtasor Mukhtasor Murdjito Murdjito Nani Kurniati Nur Chasanah Nur Yuwono Nuzula, Nike Ika Oki Setyandito Pangestu Ari Wicaksono Putra, Mochammad Sharif Rezanta Rachmat Hidayah Reni Wijayanti Reno Arief Rachman Reno Arief Rachman Reno Arief Rachman Ridlwan, Asfafur Ridlwan, Asfarur Rizki Haryono A. Rizki Mendung Ariefianto Rosyid, Daniel Mohammad Rudi Walujo Prastianto Rudi Waluyo Prastianto Rudi Waluyo Prastianto Sambodho, Kriyo Shade Rahmawati Sholihin Sholihin Sholihin Sholihin Sholihin Sujantoko Sujantoko Sujantoko Sujantoko Taufik , Tatang Akhmad Taufik, Tatang A. Taufiqur Rachman Try Febrianto Tuswan Tuswan Wahyu Suryo Putro Wahyudi Wahyudi Citrosiswoyo Wahyudi Citrosiswoyo Wahyudi Citrosiswoyo Wahyudi Citrosiswoyo Wahyudi Wahyudi Wahyudi Wahyudi Wahyudi, Wahyudi Widi Agoes Pratikto Widi Pratikto Widi Pratikto, Widi Wirayuhanto, Harish Wisnu Wardhana Wisnu Wardhana Wisnu Wardhana Yeyes Mulyadi Yeyes Mulyadi Yoffan Ramadhan Zainul Hidayah Zikra, Muhammad