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All Journal Jurnal Review Pendidikan dan Pengajaran (JRPP) JURNAL TEKNIK HIDRAULIK Jurnal Teknik Sumber Daya Air
Nugroho, Eka
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Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Social Sciences Other

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Pengembangan Pentapod Armor Beton Jenis Baru untuk Pelindung Bangunan Pantai Natakusumah, Dantje Kardana; Achiari, Hendra; Nugroho, Eka; Hidayatulloh, Syarif; Angelo, Jonathan; Adinata, Fitra
Jurnal Teknik Sumber Daya Air Vol. 3 No. 2 (Desember 2023)
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v3i2.92

Abstract

This paper discusses PentaPod concrete armor, a new type of coastal structure protection made from concrete designed to shield against wave and tidal damage. PentaPod concrete armor can be arranged randomly or in an organized fashion without requiring ties. However, it can also be installed systematically, in one or multiple layers, interconnected with ties. The overall stability of structures with PentaPod armor far exceeds that of conventional concrete armor installations. The research method involves determining the Stability Coefficient (Kd) for two variants of PentaPod concrete armor, namely PentaCone and PentaOcta, tested in a Wave Tank. This study aimed to find the stability coefficient for both variants of PentaPod concrete armor when installed randomly and systematically without tie bonds. The novelty of the research includes that the concrete armor: 1) can be installed randomly and systematically, 2) systematic installation without ties reduces the number of armor units and associated costs, 4) systematic tie-bonded installation improves stability and can reduce the size of armor units, thus lowering costs, 5) the use of ties facilitates the installation of armor on the surface and underwater. In this paper, the Flow 3D software is used as a Numerical Wave Flume. Although there are no results from the Numerical Wave Flume that can be compared with the results from the Physical Wave Flume, this is an initial step toward obtaining complementary results between the Physical and Numerical Wave Flume methods.
Pengembangan Sistem Berbasis Web untuk Analisis Curah Hujan Efektif dan Hidrograf Satuan Sintetis Menggunakan Python: Web-Based System Development for Effective Rainfall Analysis and Synthetic Unit Hydrograph Using Python Hazmi, Miftah; Nugroho, Eka; Natakusumah, Dantje; Triaji, Eko; Fachri, Fiqih; Humaidi; Wiryadi, Putu Joni
Jurnal Teknik Sumber Daya Air Vol. 5 No. 1 (Juni 2025)
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v5i2.122

Abstract

Mengembangkan modul pemrograman berbasis web untuk pemodelan curah hujan efektif dan hidrograf dengan Python merupakan langkah penting dalam meningkatkan efisiensi analisis hidrologi. Dengan memanfaatkan teknologi informasi, modul ini memungkinkan praktisi hidrologi untuk menghitung analisis hujan efektif, serta membangun hidrograf satuan sintetis yang umum digunakan di Indonesia. Pendekatan Open-Source yang diadopsi dalam pengembangan modul ini tidak hanya memastikan ketersediaannya secara terbuka bagi komunitas hidrologi, insinyur, dan peneliti, tetapi juga mendorong kolaborasi untuk meningkatkan fungsionalitas dan kualitasnya. Penelitian ini memperkenalkan modul HydroCalc untuk perhitungan infiltrasi dengan metode SCS-CN dan Horton, serta perhitungan hidrograf satuan sintetis (HSS) dengan metode SCS, Snyder, ITB 1, dan ITB 2. Modul ini kemudian di-deploy agar dapat diakses secara online menggunakan framework Streamlit. Selain itu, dilakukan verifikasi hasil antara perhitungan dengan modul HydroCalc dan perhitungan menggunakan perangkat lunak lain seperti HEC-HMS dan Excel. Hasil perbandingan menunjukkan bahwa perbedaan nilai Q peak untuk metode HSS SCS dan Snyder adalah < 15%, sedangkan untuk metode ITB 1 dan ITB 2 adalah < 0,5%. Untuk nilai T peak, hasil antara HydroCalc dan verifikasi memiliki kesamaan yang signifikan. Dengan demikian, modul ini dapat memberikan kontribusi dalam proses kalkulasi hidrologi secara efisien dan membuka peluang pengembangan lebih lanjut di masa depan.
Dinamika Perubahan Dasar dan Tebing Sungai Jambu: Studi Kasus pada Sekitar Jembatan Cikuya Aulia, Humam; Nugroho, Eka; Legowo, Sri; Kusmulyono, Agus Suprapto
JURNAL TEKNIK HIDRAULIK Vol 15, No 1 (2024): Jurnal Teknik Hidraulik
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v15i1.732

Abstract

Several cross-sections of the Jambu River, particularly around the Cikuya Bridge, have experienced bank collapse phenomena. This paper interprets the issues related to bank collapse and its impact on the flow capacity of the Jambu River, especially around the Cikuya Bridge. Morphological changes were simulated using a sediment transport model implemented in the Hydrologic Engineering Center's River Analysis System (HEC-RAS) 6.3.1, integrated with the ARS-USDA Bank Stability and Toe Erosion Model (BSTEM). The simulation results indicate that over a period of 10 years, the thalweg elevation (the lowest point of a riverbed)  of the Jambu River around the Cikuya Bridge is predicted to experience deposition in 17 cross-sections and erosion in 15 cross-sections. The highest deposition occurs at the cross-section below the Cikuya Bridge, with a thalweg elevation change of 0.59 m. This warrants attention as the storage capacity of the cross-section decreases by 7% from the initial condition. Predictions indicate that bank collapse will occur in 7 cross-sections over the next 10 years. This is attributed to the steep slopes of silt and clay banks, exceeding 45 degrees, and the reduced safety factor of bank stability due to groundwater pressure influenced by river discharge fluctuations and tidal effects reaching the Jambu River. Bank collapse impacts the elevation change of the riverbed and adds load to the sediment transport model from the collapsing cross-sections to the downstream sections. Keywords:  Jambu River, Cikuya Bridge, Cilacap, sediment transport, bank stability and toe erosion model
RAPID IDENTIFICATION OF CLIMATE CHANGE IMPACTS ON THE WEST TARUM CHANNEL Dahlia, Lia; Suryadi, Yadi; Nugroho, Eka; Chaidar, Ana Nurganah; Hatmoko, Waluyo
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 4 (2024): Vol. 7 No. 4 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i4.32997

Abstract

There is no doubt that El Niño and La Niña phenomena, which are characterized by sea surface temperature (SST) anomalies in the equatorial Pacific Ocean, have significant impacts on global and regional climate. The Oceanic Niño Index (ONI), obtained from NOAA satellite imagery, is used to measure these SST anomalies. El Niño is characterized by an increase in sea surface temperature of more than 0.5°C above normal, while La Niña is characterized by a decrease in sea surface temperature of more than 0.5°C below normal. The strength of the anomaly determines whether the phenomenon is weak, moderate, strong, or very strong. El Niño and La Niña events cause various hydrometeorological disasters that directly impact rainfall and water availability. The Indonesian Maritime Continent, located between oceans, is particularly vulnerable to the impacts of these two phenomena. El Niño causes drought, while a positive ONI increases the intensity of rainfall. These phenomena have the potential to reduce rainfall, disrupt water supply, and exacerbate droughts by changing global weather patterns. This study will identify the impacts of El Niño events on rainfall and water availability in the West Tarum Canal, which covers Karawang, Bekasi, and parts of Jakarta. By understanding these impacts, we can develop effective adaptation strategies. A literature review will provide a comprehensive picture of rainfall and water availability in the era of climate change by analyzing data from previous studies.
Co-Authors Achiari, Hendra Adinata, Fitra Angelo, Jonathan Aulia, Humam Chaidar, Ana Nurganah Dantje Kardana Natakusumah Fachri, Fiqih Humaidi Kusmulyono, Agus Suprapto Lia Dahlia, Lia Miftah Hazmi Natakusumah, Dantje Sri Legowo Syarif Hidayatulloh Triaji, Eko Waluyo Hatmoko, Waluyo Wiryadi, Putu Joni Yadi Suryadi