Numerical Simulation-Based Performance and Loading Assessment of a Dual-Rotor Ocean Current Turbine Operating in the Florida Straits
フロリダ海峡で動作する二重ロータ海流タービンの数値シミュレーションに基づく性能と負荷評価 (AI 翻訳)
Mokari, Hassan, VanZwieten, James, Tang, Yufei, Sninsky, John
🤖 gxceed AI 要約
日本語
本論文は、フロリダ海峡で動作する二重ロータ海流タービンの数値シミュレーションに基づく性能評価を実施した。可変浮力と揚力面を用いた深度制御機構をモデル化し、8自由度の剛体フレームワークと有限要素係留モデルを用いて動的応答と発電量を解析した。開ループおよび閉ループシミュレーションにより、異なるバラストタンク充填量と流速条件でのタービン挙動を明らかにした。
English
This paper presents a numerical simulation-based performance assessment of a dual-rotor ocean current turbine in the Florida Straits. It models depth control using variable buoyancy and lifting surfaces, analyzing dynamic response and power production with an 8-DOF rigid-body framework and finite-element mooring model. Open-loop and closed-loop simulations reveal turbine behavior under different ballast fill levels and flow conditions, including turbulence.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
In the global GX context
This paper contributes to the global GX context by advancing ocean current energy technology, a renewable energy source with high potential. While not directly tied to disclosure frameworks, it supports the energy transition by providing insights into the performance and control of moored turbines, which could inform future deployment and grid integration strategies.
👥 読者別の含意
🔬研究者:Researchers in ocean energy and turbine dynamics can leverage the simulation methodology and findings for further optimization and control design.
🏢実務担当者:Practitioners in renewable energy project development may use these insights for feasibility studies and system design of ocean current turbines.
📄 Abstract（原文）
Ocean currents present along the western boundaries of global ocean basins represent a significant renewable energy resource, with localized energy densities off the east coast of the US exceeding 3 kW/m² in areas and a total extractable potential in the gigawatt range. Most energy-rich currents are located within the upper 100 meters of the water column in areas where total depths exceed 250 meters. To harness this energy efficiently, moored ocean current turbines (OCTs) are being investigated that use variable buoyancy control, lifting surfaces, or a combination of both for depth regulation. This research focuses on a dual-rotor OCT configuration that utilizes both variable buoyancy and lifting surfaces, such that the variable buoyancy controls the pitch of the system, which in turn impacts the lift force on a wing structure, controlling the operating depth. This study presents a numerical simulation-based performance assessment of a dual-rotor OCT operating in the Florida Straits. The turbine dynamics are modeled using a rigid-body framework with eight degrees of freedom, six associated with the main body and two corresponding to the independent rotational speeds of the dual rotors. Additionally, the mooring system is represented through a finite-element, lumped-mass cable model, where each node is assigned three degrees of freedom. The findings provide insights into the dynamic response and power production of the proposed turbine configuration under various ballast tank fill distributions and flow conditions. Specifically, open-loop simulations are conducted for (i) different buoyancy tank fill levels at constant flow speed and zero turbulence, and (ii) different flow speeds with identical tank fill levels and no turbulence. Additionally, closed-loop results are presented for varying flow speeds under a fixed fill configuration with 10% turbulence.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/20533887first seen 2026-06-04 04:26:47
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