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2021 Fiscal Year Final Research Report

Development of a high-resolution CFD method for regional-scale simulation of tidal current farm

Research Project

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Project/Area Number 19H02363
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionKyushu University

Principal Investigator

Hu Changhong  九州大学, 応用力学研究所, 教授 (20274532)

Co-Investigator(Kenkyū-buntansha) カムラ モハメド・ムスタフア・ザキ・アハメド  九州大学, 応用力学研究所, 助教 (60870699)
末吉 誠  九州大学, 応用力学研究所, 助教 (80380533)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords潮流発電タービン / 後流影響 / 水槽実験 / 数値流体力学
Outline of Final Research Achievements

Researches have been conducted on the development of a regional-scale CFD model with extremely high parallel performance, which enables high-resolution numerical simulation of a small-scale tidal current farm with an acceptable computational cost. A model experiment on the interaction between two turbines has been carried out for validation of the CFD model. The lattice Boltzmann method was applied to the development of the wide-area CFD model. The actuator line model was modified and implemented into the lattice Boltzmann method as a tidal turbine model. The developed regional-scale CFD model has been successfully applied to high-resolution numerical simulation of a small-scale tidal current farm, with the consideration of surface waves, turbulence inflow condition.

Free Research Field

船舶海洋工学

Academic Significance and Societal Importance of the Research Achievements

複数機水車が設置される潮流発電ファームを解析する場合は広域CFD モデルによるLES が必要であるが、適切なソフトウェアがなく、関連の研究も少ない。そのために、本研究では極めて高い並列性能を有する格子ボルツマン法の応用に関する研究を行い、計算精度と計算効率の両立ができる広域CFD モデルを開発した。本研究成果により、潮流発電に特有な海面うねりの影響が考慮できる小規模潮流発電ファームの高解像度解析ができるようになり、潮流発電開発に必要な流体解析レベルを向上させるものと思われる。

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Published: 2023-01-30  

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