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三维面元法利用面网格实现三维势流流场的求解,不但可以准确地计算压力系数分布等叶片三维流场信息,又不需要耗费过多的计算时间,为分析风力机三维流场提供了有效的途径。边界层模型可以有效地计算近壁黏性区,从而补充面元法的不足。基于三维面元法和二维边界层模型建立黏性无黏耦合模型,并以Joukowsky翼型为案例验证面元法模型准确性。利用黏性无黏耦合模型对NREL Phase Ⅵ风力机叶片的三维流场进行了具体的分析。计算结果表明黏性无黏耦合模型具有效率高计算准确等特点,适合于风电叶片气弹耦合问题的研究。
The three-dimensional surface method can solve the three-dimensional potential flow field using surface meshes, which not only can accurately calculate the three-dimensional flow field information such as pressure coefficient distribution, but also does not need to spend too much calculation time, Effective way. The boundary layer model can effectively calculate the viscous zone near the wall, so as to supplement the deficiency of the face-area method. Visco-visco-visco-coupling model was established based on 3D panel method and two-dimensional boundary layer model. The Joukowsky airfoil was used as a case to verify the accuracy of the 3D model. The three-dimensional flow field of NREL Phase ¢ ô wind turbine blades was analyzed by viscous non-viscous coupling model. The calculation results show that the viscous non-coherent model has the characteristics of high efficiency and accurate calculation, and is suitable for the research of the aerodynamic coupling problem of wind turbine blades.