Article Per Year (5 Year)
p-Index From 2020 - 2025
0.702
P-Index
This Author published in this journals
All Journal International Conference on Engineering and Technology Development (ICETD) INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY International Journal of Renewable Energy Development
. Nizam
Department Of Civil And Environmental Engineering, Faculty Of Engineering, Gadjah Mada University, Yogyakarta
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Tsunami Force on a Building With Sea Wall Protection Any Nurhasanah; . Nizam; Radianta Triatmadja
International Conference on Engineering and Technology Development (ICETD) 2014: 3rd ICETD 2014
Publisher : Bandar Lampung University (UBL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (956.174 KB)

Abstract

The frequency of tsunami in Indonesia is increasing since the past few decades. The increasing of both the frequency of tsunami and the population in coastal area intensify the vulnerability of such area to tsunami disasters. Tsunamis do not only cause a large number of casualties but also damages to infrastructures along the shore. Wall protection is one possible solution to reduce tsunami force. The effectiveness however depends on the ratio between the tsunami height to the wall height and the distance between the wall and the buildings.A 24m long flume of 1.45m width and 1.5m height was utilized for the experiment. Various tsunami wave fronts were generated using a dam break mechanism. The model of buildings was tested both with and without wall protection installed at various distances in front of the buildings.The results indicated that the force reduction of building depends on the ratio between sea wall height and building high. A simplified formula for the calculation of tsunami force on protected building is proposed
STUDY OF MODIFIED PERFORATED BREAKWATER AS RENEWABLE ENERGY DEVICE Oki Setyandito; Novandy Novandy; Nizam Nizam; Martin Anda; Riana Ayu Kusumadewi; Yureana Wijayanti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1438.187 KB) | DOI: 10.25105/urbanenvirotech.v5i2.13536

Abstract

Aim: This study investigates to determine the influence of wave steepness, relative freeboard, and breaker parameters on overtopping discharge at a perforated breakwater. Methodology and results: The research method used was using both a numerical model simulations on three-dimensional computational fluid dynamics (CFD) modelling software namely FLOW-3D; and empirical equation computation. The evaluation of both approaches were performed for understanding the characteristics of wave discharge that overtopping the perforated breakwater. The experimental results of modified perforated breakwater revealed that the lowest slope possible with the highest porosity possible can generate the highest value of dimensionless overtopping discharge for wave energy harvesting. Conclusion, significance and impact study: The findings of this study formulated the optimum slope and porosity to the highest wave energy harvested. Further studies recommend that data collection from onsite trials of modified perforated breakwater are performed.
Numerical Analysis of Velocity Magnitude on Wave Energy Converter System in Perforated Breakwater Oki Setyandito; Nizam Nizam; Andrew John Pierre; Gede Dharma Suputra; Yureana Wijayanti; Martin Anda
International Journal of Renewable Energy Development Vol 11, No 1 (2022): February 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.38535

Abstract

Waves are an alternative energy source that can be used for electricity generation. Wave Energy Converter (WEC) system in perforated breakwater is potentially applicable WEC system for coastal area. The magnitude of wave energy generated is determined by the volume of sea water inside the perforated breakwater. This volumetric flow rate is calculated using the flow velocity at perforated holes on the structure slope. Therefore, this research aims to study the velocity magnitude by analyzing the interrelation among wave steepness, wave run-up and relative velocity. The method used consists of applying numeric 3D flow model in the perforated structure of the breakwater with the variation of wave height, wave period and structure slope. The result shows that, the steeper the structure, the bigger is the relative run up (Ru/H). The higher the relative run up, the higher are the relative run-up velocities (V/Vru). As the velocity increase, the volumetric flow rate inside perforated breakwater will be higher, which leads to higher wave energy. Hence, it can be concluded that the higher the velocities (V/Vru), the higher is the wave energy generated.
STUDY OF MODIFIED PERFORATED BREAKWATER AS RENEWABLE ENERGY DEVICE Oki Setyandito; Novandy Novandy; Nizam Nizam; Martin Anda; Riana Ayu Kusumadewi; Yureana Wijayanti
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13536

Abstract

Aim: This study investigates to determine the influence of wave steepness, relative freeboard, and breaker parameters on overtopping discharge at a perforated breakwater. Methodology and results: The research method used was using both a numerical model simulations on three-dimensional computational fluid dynamics (CFD) modelling software namely FLOW-3D; and empirical equation computation. The evaluation of both approaches were performed for understanding the characteristics of wave discharge that overtopping the perforated breakwater. The experimental results of modified perforated breakwater revealed that the lowest slope possible with the highest porosity possible can generate the highest value of dimensionless overtopping discharge for wave energy harvesting. Conclusion, significance and impact study: The findings of this study formulated the optimum slope and porosity to the highest wave energy harvested. Further studies recommend that data collection from onsite trials of modified perforated breakwater are performed.
Co-Authors Andrew John Pierre Any Nurhasanah Gede Dharma Suputra Martin Anda Martin Anda Novandy Novandy Oki Setyandito Oki Setyandito Radianta Triadmadja Riana Ayu Kusumadewi Yureana Wijayanti Yureana Wijayanti