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水翼被广泛应用于各类可再生能源场景，其中包括在相对较低雷诺数（Reynolds number, Re）下运行的海流涡轮机（marine current turbines, MCTs），本数据库对应的雷诺数为190000。在该雷诺数下，NACA HFSX水翼周围的流场属于转捩流动，这使得构建合适的计算流体动力学（Computational Fluid Dynamics, CFD）模型极具挑战性。本研究针对这款重要水翼，构建了一套开源的CFD验证与基准数据库，采用Wilcox开发的剪切应力输运型k-ω湍流模型（SST k-ω）进行相关模拟。该验证数据库旨在为CFD领域的研究者提供针对这类重要应用场景的CFD验证支撑手段。本数据库面向CFD领域社区开放，其中包含了攻角范围为0°至16°的ANSYS Fluent®仿真的设置文件与求解文件。本数据库的构建基于与（Goundar与Ahmed，2013，"Applied Energy"）中实验测量结果的对比，所得到的升力系数（lift coefficient, C_l）与压力系数（pressure coefficient, C_po）的平均误差，显著低于该雷诺数下已发表的所有相关研究。