摘要
用预处理后的Navier-Stokes方程数值模拟低马赫数下风力机翼型的静态和动态绕流流动。为了提高计算的精度,运用了网格自适应技术:初始网格的流场计算收敛后,采用流场速度的紊乱度捕捉湍流区域;采用直接分裂初始父单元的H型网格加密方法对湍流区域进行局部加密。基于初始网格与自适应网格的计算结果与实验结果的对比表明,网格自适应方法提高了计算的精度。
The preconditioned Navier-Stokes equations are applied to the numerical simulation for both static and dynamic flows around a wind turbine airfoil at low Mach numbers.The grid adaption is adopted for improving the accuracy of calculation.The degree of irregularity of the velocity is used to capture the turbulent regions,and a Htype refinement method based on the direct division is used to refine the turbulent regions.Numerical results based on the initial and refined meshes are compared with the measurement data,and the comparison shows that the grid adaption technique improves the numerical prediction.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2011年第5期586-591,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家重点基础研究发展计划("九七三"计划)(2007CB714600)资助项目
江苏高校优势学科建设工程资助项目
