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JURNAL TEKNIK HIDRAULIK
Published by Puslitbang Sumber Daya Air
ISSN : 20873611     EISSN : 25808087     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering
The Hydraulic Engineering Journal covers a variety of scientific fields including Irrigation Engineering, Environmental quality and water management Engineering, Swamp Engineering, Beach Engineering, Water building Engineering, Harvesting Engineering, Water hydraulics and geotechnical Engineering, Hydrology and water management Engineering, Water environmental engineering, Beach Engineering, Harvesting Engineering, Sabo Engineering.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 15, No 2 (2024): JURNAL TEKNIK HIDRAULIK" : 5 Documents clear
Kalibrasi Parameter Model Tangki Berbasis Metaheuristik untuk Transformasi Seri Data Hujan Menjadi Limpasan Periode Harian Sulianto, Sulianto
JURNAL TEKNIK HIDRAULIK Vol 15, No 2 (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.v15i2.789

Abstract

The fundamental weakness of the Tank model are the large number of parameters and their continuous values, which make it ineffective for solving practical problems. This article proposes a metaheuristic-based automatic calibration method to enhance the Tank model’s performance and applicability in transforming rainfall data series into runoff in a watershed. The metaheuristic methods involved include the Differential Evolution (DE) algorithm, Particle Swam Optimization (PSO), synthesis of chaotic search-opposition based learning-differential evolution-quantum mechanism (CODEQ) algorithm and Shuffled Complex Evolution (SCE). The models resulting from the integration of the Tank model with these metaheuristic methods are called the Tank-DE, Tank-PSO, Tank-CODEQ and Tank-SCE models. The four models were tested in the Welang Watershed (473.39 Km2), located in Pasuruan Regency, East Java, using a 15-year hydroclimatology dataset from 2006 to 2020. The 2006-2010 dataset served as the training dataset forTank model parameter calibration, while the 2011-2020 dataset was used for model validation. Calibration results show that all models achieved an accuracy level equivalent to an average RMSE of 0.05 m3/s. However, during validation, there were slight differences in high flow response results. Compared to the training dataset, the model output responded effectively to both low and high flows but tended to produce slightly higher discharge at intermediate flows, with an average difference of 1.33 m3/s. When compared to the test dataset, the model outputs tended to overestimate high flow rates (average difference of 1.63 m3/s) and underestimated low flow rates, with minor deviations.Keywords:  tank model, metaheuristic, transformation, rainfall-streamflow, Welang Watershed.
Transformasi Gelombang Reguler Akibat Pemecah Gelombang Tiang Pancang Dua Baris Selang-Seling Suprijo, Totok; Napitupulu, Gandhi; Ginting, Juventus W.R.; Simanjuntak, Eduardo M.; Abdullah, Faizal A.R.; Khadami, Faruq
JURNAL TEKNIK HIDRAULIK Vol 15, No 2 (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.v15i2.787

Abstract

Hydraulic experiments in a two-dimensional physical laboratory were conducted to evaluate the performance of pile breakwaters in reducing wave energy. The piles on the breakwater were arranged in a staggered pattern in two rows. A total of seventy-two simulation scenarios were run based on variations in the incoming wave height and period, and the spacing between the piles, using a 1:10 model scale. The data from the hydraulic tests were then processed using a spectral method that could separate the energy spectra of reflected and transmitted waves. These changes result in reflected and transmitted waves. The laboratory test data were used to estimate the values of the transmission coefficient and reflection coefficient. Both coefficients were then used to validate semi-empirical formulas for the two coefficients. The semi-empirical formulas for the two coefficients were developed based on a model for estimating the spatial porosity of pile breakwaters. The porosity estimation model takes into account the dimensions of the piles and the dimensional components of the breakwater, including the arrangement, number of rows, and spacing between the piles. The validation results of the semi-empirical formulas with the laboratory test data showed a coefficient of determination of 0.917 and a root mean square of 0.077. The staggered arrangement improves the effectiveness of the breakwater in reducing the transmission wave height. The developed semi-empirical model can be used to design the pile dimensions to achieve optimal reflected and transmitted wave heights for coastal protection. Keywords:  pile breakwater, coastal protection, hydraulic experiment, physical wave simulation, wave transmission new formula
Perancangan Sistem Pengelolaan Air Hujan dengan Zero Run Off System di RSUD Kota Bogor Ihsani, Nanda Nashiha; Setiawan, Budi Indra; Saptomo, Satyanto Krido
JURNAL TEKNIK HIDRAULIK Vol 15, No 2 (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.v15i2.778

Abstract

Annual flooding during the rainy season at the Bogor City Regional General Hospital since 2016 has created a significant issue, potentially triggering a domino effect impacting the hospital, its visitors, staff, and patients. This study aims to design a rainwater management system to mitigate excessive rainwater puddles, which causes flooding, using the Zero Runoff System (ZROS) concept. The ZROS concept focuses on establishing an eco-drainage system for this government-owned hospital to address the issue of inundation effectively. This study employs rainfall-runoff modeling with statistical methods such as Distribution Testing and Chi-Square Analysis to determine data fit. Hydrological analysis is conducted to calculate design discharge and runoff volumes that can be discharged to detention ponds. The results show that the required storage volume is 72.35 m³, leading to the recommendation of constructing a detention pond system. The proposed detention system consists of two ponds, each measuring 5 m x 3 m with a depth of 2.5 m, providing a total storage capacity of 75 m³ to meet the required runoff control needs. The implementation of this system is expected to provide an integrated solution related to the flood issue at the Bogor City Hospital, considering that the hospital is a public facility that is prone to piles of garbage, for example, a control tub is made before water enters the Detention Pond. The chamber includes a trash screen with a closable outlet to facilitate maintenance and ensure the detention ponds remain effective. Keywords:  detention ponds, flood control,  inundation, rainwater management, zero run-off system
Pemodelan Degradasi dan Agradasi Dasar Sungai dengan Beberapa Persamaan di Sungai Winongo Yogyakarta Harsanto, Puji; Sutri, Galuh Nanda; Rahadiansyah, Shakti; Lesmana, Surya Budi
JURNAL TEKNIK HIDRAULIK Vol 15, No 2 (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.v15i2.768

Abstract

Calculating riverbed degradation and aggradation is essential in designing riverbank protection structures, particularly for determining foundation depth. Excessive degradation can compromise foundation stability, significantly increasing the risk of structural failure. Numerous predictive models for egradation and aggradation have been developed by researchers, highlighting the importance of selecting an equation that closely aligns with the specific characteristics of the river to achieve optimal design accuracy. This study aims to determine the most suitable predictive model for riverbed degradation and aggradation. A case study was conducted along a 43.75 km of the Winongo River Yogyakarta. The simulation involved riverbed sediment data collected at 500 m intervals from upstream to downstream, and secondary discharge data comprising average daily discharge for both wet and dry months. The selected grainsize parameter follows standards in HEC-RAS 6.3.1, with the Meyer Peter Müller equation applied to d90, Engelund Hansen to d50, and Laursen Copeland to d84. Simulation results of riverbed degradation were then compared against observed conditions of riverbank erosion. Riverbank steepness or protective structure failure indicates excessive riverbed degradation, while stable conditions suggest otherwise. Based on the simulations conducted on the Winongo River, the Engelund Hansen equation provided average degradation estimates more consistent with field conditions than the other two equations.Keywords:  degradation and agradation, transport sediment equations, HEC-RAS, river bank
Advancing Forensic Flood Analysis Through Hydraulic Physical Models Sanchez-Quijano, Miguel Angel; Gutierrez-Lopez, Alfonso; Gonzalez Lagunas, Fernanda
JURNAL TEKNIK HIDRAULIK Vol 15, No 2 (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.v15i2.794

Abstract

Urban density significantly increases the multi-hazard risks caused by extreme weather events. In Latin America and the Caribbean (LAC) countries, flood damages in urban areas are considerable and have shown a consistent annual increase. This challenge has prompted innovative educational responses to address the growing need for understanding and managing urban flood risks effectively. As part of postgraduate education efforts, the International Flood Initiative under the Intergovernmental Hydrological Programme of UNESCO for the LAC region (IFI-LAC IHP-UNESCO) aims to enhance understanding of vulnerability and flood risk estimation in urban settings. The initiative encourages the development of advanced hydro-informatic tools, watershed and river modeling techniques, and scale prototype construction to foster practical learning.One of the educational approaches involves analyzing and reconstructing hydraulic infrastructure failures to provide insights into urban flood dynamics. This paper highlights the design and construction of a surface channel and a floodgate system equipped to enable controlled flash openings, capable of triggering crash waves. These facilities allow the recreation of three notable urban flood events, facilitating forensic hydraulic analysis. Detailed similitude analyses are provided, illustrating how sonic water level sensors can be effectively implemented and contributing to the understanding of flood risks and mitigation strategies in densely populated urban environments. Keywords:  flood; forensic analysis; hydraulics; open channel; damage; disaster; flash flood; break wall

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