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All Journal Teknik Sipil dan Arsitektur Teknisia Jurnal Teknik Sipil dan Arsitektur
Pratiwi, Dwi Astuti Wahyu Wulan
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Civil Engineering, Building, Construction & Architecture Engineering

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KAJIAN PENGARUH VARIASI KEMIRINGAN CHUTE TERHADAP KECEPATAN DAN JENIS ALIRAN DI SALURAN TERBUKA Anggraheni, Dinia; Pratiwi, Dwi Astuti Wahyu Wulan; Tazka, Arief El Hakam; Haq, Ikbar Dlialul
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.4852

Abstract

Studies related to flow in open channels are still very important to support understanding of flow behavior and also applications in civil engineering such as the construction of irrigation and drainage channels to increase efficiency and better design. Most of the designed flows in artificial open channels are non-uniform steady flows. The flow becomes non-uniform, one of which is because the flow passes through a channel whose geometry changes, including changes in width, height and slope angle of the channel. One of the structures in an artificial channel is a chute. Through this research, the effect of variations in chute slope on flow velocity and the type of flow that occurs downstream of the chute was studied. This research uses primary data with independent variables in the form of 4 variations in flow discharge or flow opening and 4 variations in slope. To analyze flow velocity, three measurement were used, using a current meter and float. Based on the analysis results, the greater the slope, the greater the flow velocity at the end of the chute and decreases further downstream. Flow velocity using a float produces a greater velocity because the float was on the surface of the flow, so it requires a correction number to become the average flow velocity. Because the influence of slope also had on velocity, the greater the slope, the greater the velocity, the more supercritical flow forms. Keyword: Open Channel Flow, Chute, Velocity, Non-uniform Flow, Slope Channel
KAJIAN PENGARUH VARIASI KEMIRINGAN CHUTE TERHADAP KECEPATAN DAN JENIS ALIRAN DI SALURAN TERBUKA Anggraheni, Dinia; Pratiwi, Dwi Astuti Wahyu Wulan; Tazka, Arief El Hakam; Haq, Ikbar Dlialul
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.4852

Abstract

Studies related to flow in open channels are still very important to support understanding of flow behavior and also applications in civil engineering such as the construction of irrigation and drainage channels to increase efficiency and better design. Most of the designed flows in artificial open channels are non-uniform steady flows. The flow becomes non-uniform, one of which is because the flow passes through a channel whose geometry changes, including changes in width, height and slope angle of the channel. One of the structures in an artificial channel is a chute. Through this research, the effect of variations in chute slope on flow velocity and the type of flow that occurs downstream of the chute was studied. This research uses primary data with independent variables in the form of 4 variations in flow discharge or flow opening and 4 variations in slope. To analyze flow velocity, three measurement were used, using a current meter and float. Based on the analysis results, the greater the slope, the greater the flow velocity at the end of the chute and decreases further downstream. Flow velocity using a float produces a greater velocity because the float was on the surface of the flow, so it requires a correction number to become the average flow velocity. Because the influence of slope also had on velocity, the greater the slope, the greater the velocity, the more supercritical flow forms. Keyword: Open Channel Flow, Chute, Velocity, Non-uniform Flow, Slope Channel
Exploring future inundation risk due to sea level rise using CMIP6 models in Indonesia Pratiwi, Dwi Astuti Wahyu Wulan; Hiromune Yokoki
Teknisia Vol 31 No 1 (2026): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol31.iss1.art1

Abstract

Sea level rise (SLR) is one of the most significant impacts of climate change which threatening coastal areas, particularly in archipelagic countries like Indonesia. This study projects the extent of inundation, the number of at-risk populations, and estimates of damage cost due to SLR through 2100. The analysis was conducted by combining the projections of sea level (zos and zostoga) from five CMIP6 models: MIROC6, ACCESS-ESM1-5, CanESM5, NorESM2-MM and MRI-ESM2-0, elevation data from ETOPO2022, tides from TPXO10, and population data from NCAR and IIASA. The estimated damage cost was calculated using a regression model based on historical disaster data from EM-DAT. The findings of the analysis indicate that, without mitigation and adaptation measures, Indonesia could experience permanent inundation of 18,700 to over 39,500 km² with an affected population of around 10 million in 2100. National damage cost due to SLR is projected to reach USD 7 billion in 2050 and increase to USD 10 billion in 2100 in high emission scenario. The provinces with the highest physical impact are South Kalimantan and South Sumatra, highest social impact and damage cost occur in East Java and South Kalimantan. These findings emphasize that climate change mitigation and adaptation policies in Indonesia must be planned equitably and supported by robust projections.
Co-Authors Anggraheni, Dinia Haq, Ikbar Dlialul Hiromune Yokoki Raden Mohamad Herdian Bhakti Tazka, Arief El Hakam