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Applied Science Technology in Naval Engineering (ASTNE)
Published by Universitas Pembangunan Nasional Veteran Jakarta
ISSN : 30318866     EISSN : 30318866     DOI : https://doi.org/10.54378/astne.v3i2
Core Subject : Science, Education, Engineering,
Energy Engineering Mechanical Engineering Other
Applied Science and Technology on Naval Engineering (ASTNE) is open-access journal related to Naval engineering. It is open to all students, engineers, architectures, scientists, researchers, practitioners and other scholars to publish scientific paper in ASTNE. ASTNE cover the following topics: Hydrodynamics and Stability Marine Engineering Design and Ship Optimization Maritime Technology Ocean Renewable Energy Coastal and Offshore Marine Transportation ISSN: 3031-8866 SINTA Accreditation: In Progress PUBLICATION FREQUENCY Applied Science and Technology on Naval Engineering (ASTNE) will publish two times of issues per year in February and August.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 17 Documents
 1   2 
Analisis Pengaruh Anti Kavitasi Terhadap Kavitasi Pada Sea Chest Valve Di Kapal daffa, Fatih izzudin; Mahdhudhu, Fathin Muhammad
Applied Science and Technology on Naval Engineering Vol 3 No 1 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kavitasi pada valve merupakan fenomena yang sering terjadi di lingkungan kapal yang dapat menyebabkan kerusakan pada sistem perpipaan dan komponen terkait. Para owner kapal kerap menganggap sepele permasalahan kavitasi ini sehingga valve kerap tidak beroperasional dengan baik karena terjadinya kavitasi. Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan teknologi anti kavitasi terhadap fenomena kavitasi pada Sea Chest Valve. Metode yang digunakan meliputi pengumpulan data lapangan dari kapal yang beroperasi secara rutin, serta simulasi menggunakan software Valvstream untuk mengetahui efektivitas penambahan trim anti kavitasi. Studi ini bertujuan untuk menganalisis efektivitas Trim anti kavitasi pada Sea Chest Valve dengan variasi pressure, temperature, sound level, dan viscosity serta membuat prototype valve yang terpasang trim anti kavitasi. Analisis simulasimenunjukkan bahwa penurunan tekanan, kenaikan temperature, sound level yang tinggi dan viscosity yang tinggi sebagai indikator terjadinya kavitasi dapat berkurang dengan ditambahkan nya anti kavitasi. Penelitian ini memberikan kontribusi dalam memahami mekanisme kavitasi pada aplikasi Sea Chest Valve di kapal serta memberikan rekomendasi untuk pengembangan teknologi anti kavitasi di masa depan. Implikasi praktis dari penelitian ini adalah potensi untuk meningkatkan keandalan dan masa pakai sistem perpipaan pada kapal, serta mengurangi terjadinya kavitasi.
Analisis Stabilitas Fasilitas Loading Unloading Crane dan Ship Loader pada Kapal Konversi Jihad Pramayoga; Sulistyawati, Wiwin; Marasabessy, Amir
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11770

Abstract

Kapal MV. Ratu Damai, yang awalnya dirancang sebagai bulk carrier, telah mengalami konversi menjadi Floating Loading Facility (FLF). Konversi ini melibatkan penambahan struktur dan peralatan bongkar muat yang signifikan, yang berpotensi memengaruhi stabilitas kapal secara keseluruhan. Penelitian ini bertujuan untuk menganalisis stabilitas MV. Ratu Damai pasca konversi, dengan fokus pada dampak penambahan alat bongkar muat terhadap parameter stabilitas statis dan dinamis. Metode yang digunakan meliputi perhitungan stabilitas berdasarkan data dimensi kapal, bobot, dan posisi pusat gravitasi (KG) sebelum dan sesudah konversi, serta simulasi berbagai kondisi pemuatan dan operasional. Hasil analisis diharapkan dapat mengidentifikasi perubahan karakteristik stabilitas, menilai kepatuhan terhadap regulasi maritim yang berlaku, dan memberikan rekomendasi untuk memastikan keselamatan operasional kapal.
Studi Dampak Perairan Dangkal terhadap Gaya Lateral (Sway Force) dan Momen Berputar (Yaw Moment) Kapal Rico; Ayub, Fakhri Akbar
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11786

Abstract

This study investigates the influence of restricted waters on the sway force (Y’H) and yaw moment (N’H) acting on a ship. We performed simulations using Computational Fluid Dynamics (CFD) on a 1:40 scale KRISO Container Ship (KCS) model, varying ship speed, water depth (1.3T and 1.6T), and drift angle (2°–10°). The simulation results indicate that both Y’H and N’H increase significantly as the water becomes shallower and the drift angle becomes larger. This phenomenon is attributed to the pressure imbalance around the ship's hull, caused by flow confinement. These findings are anticipated to provide valuable insights for safer and more efficient ship maneuvering, especially in narrow and shallow waterways. Keywords: restricted waters; bank effect; sway force; yaw moment; CFD
Optimalisasi Efisiensi Turbin Arus Laut Horizontal untuk Mendukung Kebutuhan Energi di Kawasan Pesisir Larantuka Nikmah, Indana Zulfatun; Ayub, Fakhri Akbar
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11789

Abstract

This study aims to evaluate the energy conversion efficiency of Horizontal Axis Tidal Turbines (HATT) by varying blade length and angle of attack (AoA), and to assess their potential application in the coastal region of the Larantuka Strait. Numerical simulations were performed using Computational Fluid Dynamics (CFD) across nine turbine configurations to determine torque and power coefficient (Cp). The turbine with a 1 m blade and 10° AoA achieved the highest Cp value of 0.68. Meanwhile, the turbine with a 2 m blade and the same AoA, despite having a slightly lower Cp (0.66), produced the highest annual energy output of 737,619.7 kWh. With a net power output of 140.65 kW, approximately four units of this turbine are required to supply around 10% of Larantuka’s annual electricity demand. The selection of the optimal turbine model is based on a multi-objective approach that balances efficiency and energy output. These findings highlight the strong potential of tidal turbines as a renewable energy solution in eastern Indonesian coastal areas.
Analisis Penerapan Metode Value Stream Mapping Pada Proses Bongkar Muat Kapal Container Untuk Meningkatkan Efisiensi Waktu Pada Pelabuhan Sunda Kelapa PT. Pelabuhan Indonesia (Pelindo) Dwiki Faris Alamsyah; Marasabessy, Amir
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11792

Abstract

The cargo container unloading and loading process is a critical component in port operations, significantly impacting logistical efficiency and operational costs. This study aims to analyze the application of Value Stream Mapping (VSM) to enhance time efficiency in loading and unloading activities at PT. Pelabuhan Indonesia (PELINDO). Inefficiencies in these processes often result in vessel departure delays, increased berthing times, and elevated operational expenditures. Using a quantitative approach, this research gathers primary data through direct field observations and interviews with key stakeholders at Tanjung Priok Port, supported by secondary data on vessel departure delays. The findings reveal multiple non-value-added activities and process waste contributing to inefficiencies. Based on VSM analysis, proposed improvements led to a significant reduction in process cycle time and enhanced overall port operational efficiency. The implementation of VSM proves to be an effective lean tool in streamlining container handling operations. These findings offer practical contributions to PT. Pelabuhan Indonesia in boosting performance and competitiveness, while also serving as a reference for future maritime logistics studies. Keywords: Value Stream Mapping; Time Efficiency; Loading and Unloading; Port Operations; Lean Manufacturing.
Studi Kekuatan Struktur Deck Crane Barge Terhadap Beban Knuckle Boom Crane dan Hydraulic Crane dengan Pendekatan Metode Elemen Hingga Santoso, Muhammad Aysar Santoso; Sulistyawati , Wiwin
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11795

Abstract

This study aims to evaluate the structural strength of a crane barge deck under the loading of two types of cranes: the Knuckle Boom Crane and the Hydraulic Crane. The evaluation is conducted using the numerical Finite Element Method (FEM) with the assistance of Maxsurf Multiframe software. The main focus of the analysis is to assess the effects of crane type, boom position variation (working radius), and deck plate thickness on stress distribution and bending moment in the deck structure. The structural model used is based on an actual design of a crane barge from PT Baramulti, with dimensions adjusted to the limitations of the student version of the software. Loading scenarios were applied incrementally from 0 to 30 tons, and the results were assessed by comparing them against allowable stress limits set by the Indonesian Classification Bureau (BKI). The simulation results show that large-capacity cranes, such as the 60T Knuckle Boom Crane, generate stress levels exceeding BKI safety limits. However, after structural reinforcements were applied—such as the addition of stiffeners, increasing deck plate thickness, and changing the material to AH36—the maximum stress was reduced by approximately 26%, restoring structural safety under loads up to 20 tons. This research highlights the importance of structural design that considers crane type, actual load conditions, and material specifications to ensure the operational safety of crane barges.
Optimasi Desain Pipa Hisap pada Kapal TSHD Freeway Melalui Aplikasi Pipa Spiral untuk Reduksi Penurunan Tekanan Aliran Lumpur Air-Pasir: Bahasa Indonesia Muhamad Afrizal
Applied Science and Technology on Naval Engineering Vol 3 No 2 (2025): Applied Science and Technology on Naval Engineering (ASTNE)
Publisher : Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/astne.v3i2.11799

Abstract

Studi ini melakukan analisis komparatif performa hidrodinamika pipa konvensional dan pipa spiral untuk aliran fluida non-Newtonian dalam sistem perpipaan. Metodologi meliputi pemodelan geometri dengan SolidWorks dan simulasi Komputasi Dinamika Fluida (CFD) menggunakan ANSYS Fluent untuk evaluasi penurunan tekanan. Validasi model numerik terhadap data eksperimen terdahulu mengkonfirmasi kemampuannya dalam memprediksi perilaku rheologi fluida. Hasil penelitian menunjukkan bahwa pipa spiral secara konsisten meminimalkan penurunan tekanan dibandingkan pipa konvensional pada kondisi horizontal, suatu keuntungan yang dikaitkan dengan peningkatan distribusi partikel dan reduksi gesekan akibat secondary flow. Meskipun kemiringan pipa 6,76o meningkatkan pressure drop secara keseluruhan, pipa spiral mempertahankan keunggulannya di sebagian besar skenario. Namun, observasi menunjukkan adanya titik di mana pressure drop pipa spiral dapat mendekati atau melampaui pipa konvensional pada kecepatan tinggi dan fraksi volume tertentu, menandakan adanya dinamika multi-parameter yang kompleks. Temuan ini penting untuk perancangan dan optimalisasi sistem perpipaan fluida non-Newtonian di sektor teknik perkapalan. Kata kunci: Pipa spiral; Pipa konvensional; Fluida non-Newtonian; Penurunan tekanan

Page 2 of 2 | Total Record : 17

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