CFD Analysis of Aerodynamic Thrust from Flettner Rotors on Feeder Ships Operating in Low-Wind Tropical Regimes: A Case Study for Maluku Waters, Indonesia
低風熱帯海域で運航するフィーダー船のフレットナーローターによる空力推力のCFD解析：インドネシア・マルク海域の事例研究 (AI 翻訳)
Richard B Luhulima, Fella Gaspers, Gerald Richard Latuhihin, Helly S Lainsamputty
🤖 gxceed AI 要約
日本語
本研究は、インドネシア・マルク海域の低風速（3-6 m/s）条件下でフィーダー船に搭載したフレットナーローターの空力性能をCFD解析。揚力係数は風速増加に伴い非線形に減少するが、空力効率比は約2.4で安定。実船換算で主機出力9.3-29.1%削減、CO₂排出を年間96-313トン削減可能と試算し、低風領域での風力推進の有効性を示した。
English
This study uses CFD to analyze Flettner rotor performance on a feeder ship in low-wind tropical conditions (3–6 m/s) off Maluku, Indonesia. Results show stable aerodynamic efficiency (CL/CD~2.4) and power reduction of 9.3–29.1%, equivalent to 96–313 t/yr CO₂ savings per rotor, validating wind-assisted propulsion for green shipping in low-wind regions.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は海運国であり、フレットナーローターのような風力推進技術はGHG削減策として注目されるが、本論文はインドネシア海域に特化。日本の船舶脱炭素戦略（特に内航船やアジア航路）への応用可能性を示唆する点で参考になる。
In the global GX context
This paper provides quantitative evidence for Flettner rotor effectiveness in low-wind tropical conditions, contributing to the global maritime decarbonization toolbox. It supports IMO's GHG reduction targets and offers a validated CFD framework that can be adapted to other regions, including emerging Asian shipping routes.
👥 読者別の含意
🔬研究者:Provides a validated CFD methodology and performance data for Flettner rotors under low wind speeds, useful for further optimization and integration studies.
🏢実務担当者:Offers quantitative fuel savings and CO₂ reduction estimates that can inform investment decisions in wind-assisted propulsion for feeder vessels in tropical regions.
🏛政策担当者:Supports IMO decarbonization policies by demonstrating a viable technology for emission reduction in low-wind areas, aiding region-specific regulatory frameworks.
📄 Abstract（原文）
The maritime shipping industry faces urgent decarbonization mandates from the International Maritime Organization, driving interest in wind-assisted propulsion technologies. Flettner rotors, leveraging the Magnus effect, offer promising supplementary thrust but remain understudied in low-wind tropical regimes. This study presents a three-dimensional Computational Fluid Dynamics analysis of a Flettner rotor applied to a feeder vessel operating in Maluku Waters, Indonesia, where dominant wind speeds range 3–6 m/s. Steady Reynolds-Averaged Navier-Stokes simulations employing the k–ω SST turbulence model with low-Reynolds wall treatment (y⁺ < 1) were conducted for a rotor configuration featuring diameter D = 4 m, height L = 24 m (aspect ratio = 6), 1.2D end-plates, and constant rotational speed 200 rpm under beam seas conditions (90° apparent wind angle). Results demonstrate that the lift coefficient decreases non-linearly from 9.24 at 3 m/s to 6.41 at 6 m/s, while the drag coefficient declines from 3.87 to 2.68, maintaining a stable aerodynamic efficiency ratio (C L /C D ) of 2.38–2.41. Effective thrust ranges from 15.8 to 49.2 kN after accounting for hull-rotor interaction losses. For a reference 60 m feeder vessel operating at 11 knots, this corresponds to main engine power reduction of 9.3%–29.1%, equivalent to 124–388 L/day marine diesel oil savings and 96–313 t/yr CO₂ mitigation per rotor. The findings confirm that Flettner rotors retain substantial thrust-generating capability in low-wind tropical conditions, supporting green shipping initiatives for Indonesia's eastern maritime logistics network and providing a validated numerical framework for region-specific decarbonization strategies.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/20503761first seen 2026-06-03 04:22:15 · last seen 2026-06-08 04:13:29
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