CFD Validation Database for NACA HFSX Hydrodynamics

The NACA HFSX hydrofoil is used in numerous renewable energy applications including marine current turbines (MCTs) which operate at relatively low Reynolds number (in this database Re=190,000). The flow around NACA HFSX hydrofoil at such Re value is transitional which makes the establishment of proper CFD models quite challenging. In the present work, we propose an open-source CFD validation and benchmarking database for this important hydrofoil using the Shear-Stress Transport version of Wilcox’s k-ω turbulence model (SSTk-ω). This validation database aims at providing means of CFD validation to the community for such important application. The files in this database are provided to the CFD community, which includes the setup and solution files of ANSYS Fluent® simulations at angle-of-attack ranging from 0 to 16 degrees. The database is established based on comparison with experimental measurement from (Goundar & Ahmed, 2013, Applied Energy) for the coefficients of lift (C_l) and pressure (C_po) with average error that is considerably lower than any published study at such Reynolds number.NACA HFSX水翼广泛应用于诸多可再生能源应用场景，其中包括在相对较低雷诺数（Reynolds number）下运行的潮流涡轮机（marine current turbines, MCTs），本数据库的雷诺数Re=190000。在此雷诺数条件下，NACA HFSX水翼周围的流场处于转捩状态，这使得构建适配的计算流体动力学（Computational Fluid Dynamics, CFD）模型极具挑战。本研究针对这款重要水翼，采用Wilcox提出的k-ω湍流模型的剪切应力输运版本（Shear-Stress Transport k-ω turbulence model, SST k-ω），构建了一套开源的CFD验证与基准数据集。该验证数据集旨在为该类重要应用的科研社区提供CFD验证支撑手段。本数据集向CFD社区开放共享相关文件，其中包含了攻角（angle-of-attack）范围为0°至16°的ANSYS Fluent®仿真的设置文件与求解文件。本数据集的构建基于与（Goundar & Ahmed, 2013, Applied Energy）中实验测量数据的对比，其升力系数（lift coefficient, C_l）与压力系数（pressure coefficient, C_po）的平均误差显著低于同雷诺数下已发表的所有同类研究。