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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Teknik Hidro Jurnal Environmental Science NUSANTARA : Jurnal Ilmu Pengetahuan Sosial Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) Bandar: Journal of Civil Engineering Jurnal Teknik Informatika (JUTIF) Buletin Sistem Informasi dan Teknologi Islam Jurnal Informatika Progres Prosiding Seminar Nasional Teknik Sipil UMS Jurnal Karajata Engineering Jurnal Teknik Sipil Macca Kohesi: Jurnal Sains dan Teknologi ARUS JURNAL SAINS DAN TEKNOLOGI Journal of Green Complex Engineering Journal of Muhammadiyah’s Application Technology Jurnal Rekayasa Infrastruktur Hexagon Jurnal Balireso: Jurnal Pengabdian pada Masyarakat Journal Techno Entrepreneur Acta
Andi Makbul Syamsuri
Universitas Muhammmadiyah Makassar
Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Journal : journal of green complex engineering

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Efektivitas Deflektor Silinder Pori Bertulang dalam Mengendalikan Aliran di Sekitar Pilar Jembatan Aksan Ali; Nenny Karim; Andi Makbul Syamsuri; Sahabuddin Latif
Journal of Green Complex Engineering Vol. 3 No. 2 (2026): Februari
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v3i2.247

Abstract

ABSTRAK Gerusan lokal di sekitar pilar jembatan merupakan salah satu penyebab utama kegagalan struktur dalam sistem hidraulik akibat interaksi kompleks antara aliran turbulen dan elemen fondasi. Penelitian ini menyelidiki pengaruh pemasangan deflektor arus bawah air (Underwater Current Deflector/UCD) berbentuk silinder pori bertulang (SPB) terhadap karakteristik aliran di sekitar pilar jembatan. Eksperimen dilakukan di laboratorium menggunakan model fisik dalam saluran terbuka dengan kondisi debit yang dikendalikan. Kecepatan aliran dan kedalaman air diukur, serta bilangan Froude dan Reynolds dihitung sebelum dan sesudah pemasangan SPB. Hasil penelitian menunjukkan bahwa deflektor secara signifikan menurunkan kecepatan aliran dan mengubah rezim aliran dari kondisi superkritis menjadi subkritis. Transisi ini mengindikasikan penurunan energi hidraulik dan turbulensi, sehingga meminimalkan potensi mobilisasi sedimen dan gerusan lokal. Analisis komparatif menegaskan efektivitas SPB dalam menstabilkan pola aliran dan menurunkan indikator energi aliran. Struktur berpori pada deflektor berperan sebagai peredam energi aliran, menjadikannya alternatif perlindungan hidraulik yang menjanjikan dibandingkan metode struktural konvensional. Meskipun temuan ini signifikan, studi ini juga mengakui keterbatasan model skala laboratorium dalam mereplikasi kondisi sungai alami secara menyeluruh. Oleh karena itu, penelitian lanjutan melalui validasi lapangan dan simulasi numerik sangat dianjurkan. Studi ini memberikan dasar praktis bagi pengembangan deflektor hidraulik untuk perlindungan pilar jembatan. ABSTRACT Local scour around bridge piers is a major cause of structural failure in hydraulic systems due to complex interactions between turbulent flows and foundation elements. This study investigates the effect of installing an underwater current deflector (UCD) in the form of a reinforced pore cylinder (SPB) on flow characteristics around a bridge pier. A laboratory flume experiment was conducted using physical models at controlled discharge conditions. Flow velocity and water depth were measured, and Froude and Reynolds numbers were calculated before and after the installation of the SPB. The results show that the deflector significantly reduces flow velocity and shifts flow regimes from supercritical to subcritical conditions. This transition indicates a reduction in hydraulic energy and turbulence, thus minimizing the potential for sediment mobilization and local scour. Comparative analysis confirmed the effectiveness of the SPB in stabilizing flow patterns and reducing flow energy indicators. The porous structure of the deflector acts as a flow energy dissipator, making it a promising hydraulic protection alternative to traditional structural methods. While the findings are significant, the study acknowledges the limitations of laboratory-scale models in replicating real river conditions. Further research involving field validation and numerical simulations is recommended. This study provides a practical basis for the development of hydraulic deflectors for bridge pier protection.
Downstream Amplification of Suspended-sediment Flux Outpaces Discharge Growth in the Mangottong River, Indonesia Muhammad Scyroth Arianto; Ilfan Muis; Andi Makbul Syamsuri; Fithriyah Arief Wangsa
Journal of Green Complex Engineering Vol. 4 No. 1 (2026): August
Publisher : Gio Architect

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59810/greenplexresearch.v4i1.286

Abstract

Suspended-sediment transport in small tropical rivers can change sharply over short distances because discharge, sediment availability, and cross-sectional mixing vary simultaneously. This study examined longitudinal changes in water discharge, suspended-sediment concentration (SSC), and instantaneous suspended-sediment flux along the Mangottong River, South Sulawesi, Indonesia. Five observations were available at each upstream, midstream, and downstream cross-section. Point discharges were verified from the field calculations, SSC was derived from laboratory dry-mass measurements, and section concentration was evaluated using discharge weighting. Suspended load was calculated as 0.0864CQ, with C in mg L⁻¹ and Q in m³ s⁻¹. Section discharge increased from 5.178 to 7.554 and 8.438 m³ s⁻¹, whereas discharge-weighted SSC changed from 626.5 to 568.3 and 1,829.2 mg L⁻¹. Corresponding suspended loads were 280.3, 370.9, and 1,333.5 t d⁻¹. The downstream section therefore carried 4.76 times the upstream load while water discharge increased only 1.63-fold. The lower-reach amplification was driven primarily by sediment enrichment rather than discharge growth alone, demonstrating the value of discharge-weighted sampling for interpreting sparse river surveys.
Co-Authors Abdul Rakhim Nanda Afdaliah, Athira Agusalim, Agusalim Ahdania, Andi Ahmad Yani ahmad yani Aksan Ali Al Hidayat, Taufik Al Imran, Hamzah Aldi Alfiah, Nur Aisyah Ali, Muhammad Yunus Andi Ahdania Anto, Sahril Ashabul Kahfi Asnita Virlayani Asnita Virlayani, Asnita Azzah Aulia Syarif Bakti, Rizki Yusliana Chairatul Anam Darniati Darniati Darwis, Muh Fakhruddin Dayana, Lucke Ayurindra Margie Desi Anggreani Desi Anggreani Erwin Toding Fadly, Feri Fahrim Irhamna Rachman Fajar, Muh Faraouk Maricar Fauzan Hamdi Fauzan Hamdi, Fauzan Firman Fithriyah Arief Wangsa Haerul, Muh. Farhan Hamzah Al Imran Hardiansyah Hardiansyah Hidriansyah Idhan Akbar Ida Mulyadi, Ida Ikhwal Lukman, Muh Ikram Ilfan Muis Imran, Hamzah Al Imran, Hamzah Al Imran Indriyanti Israil Jalil, Fikri Haikal Jamir, Muh Jihan Izzathul Mujidah Karim, Nenny Kasmawati Kasmawati Kasmawati Lilis Suganda Lisda Lisa Lukman LUKMAN ANAS Lukman Anas M Agusalim M. Agusalim M. Agusalim Mappatoba, Andi Maricar, Faraouk Maulana, Muhammad Wijdan Maulana Muh Jamir Muh. Syahrul A Muhammad Alqadri Aras Putra Muhammad Asygar Faeruddin Muhammad Faisal Muhammad Khadafi MUHAMMAD SABIR Muhammad Sabir Muhammad Scyroth Arianto Muhammad Syafaat S. Kuba Muhsin, Muh Arief Muhyiddin A.M Hayat Muhyiddin A.M Hayat Munawir, Ical Mustazim Mutiah, Ulfa Nenny Nenny Karim Nenny, Nenny Nini Apriani Rumata Novi Julianti Nur Alam Nur Annisa Syarifuddin Nur Miftahul Janna Nur Milani Hidayah Nurfadilah Nurhidayat, M. Nurnawaty Nurul Ilma Parwati Parwati Rasyidi, Muhammad Fachri Rizki Yusliana Bakti Sahabuddin Latif SANDI Sandi Sandi, Andi Muhammad Sarina Sarjun Seftiawan N, Muh Jusuf Siti Marwa Suriamihardja, Dadang Syahril Akbar Taufik Al Hidayat Taufiqur Rachman Thaha, Arsyad Titik Khawa Abd Rahman Titik Khawa Abdul Rahman Titin Wahyuni Toding, Erwin Ulfa Mutiah Usman, Sucipto Wa Nanda Sulystrian Yahya, Fardiyansyah Yahya