透平机械叶轮叶片三维参数化造型及六面体网格生成方法研究_谢永慧.pdfVIP

DO I :10.16579/j .issn.1001.9669.2007.05.003 Journal of Mechanical Strength 2007, 29(5):795 ～ 799 STUDY ON THREE DIMENSIONAL PARAMETRIC FEATURE MODELING METHOD AND GENERATION OF HEXAHEDRON MESH FOR IMPELLER AND BLADE OF TURBOMACHINERY 　　　　　 (西安交通大学能源与动力工程学院, 西安710049) XIE YongHui 　HAN YongQiang 　LIU XiangZheng 　FENG ZhenPing (School of Energy and Power Engineering , Xi ′an J iaotong University , X i ′an 710049, China ) 　, , , , 。 , CAGD (computer aided geometric design ) ; BMSweeping (sweeping via background mesh interpo ation) 。 , 、 。100 kW , , 。 　　　　　 　TK263.61　TB115 Abstract　Impe er is a key component of centripeta turbine and centrifuga compressor and has very comp ex geometry.It is very important to obtain accurate numerica resu ts by FEA (f inite e ement ana ysis)using perf ect mesh.Based on the structura feature of im- pe er, CAGD (computer aided geometric design)w as adopted to deve op its three dimensiona parametric f eature mode ing method. Then homeomorphism princip e and other methods as BMSw eeping (sw eeping via background mesh interpo ation)and so on were u sed to deve op generation method of hexahedron mesh for impe er.In order to improve accuracy of numerica resu ts by FEA, some specia mesh generation methods for fi et on the bottom of b ade and in et of f ow channe have a so been deve oped to obtain good mesh.The mesh for a centripeta impe er of a 100 kW microturbine w as generated, it shows the mesh is perf ect and can satisfy the requirement of FEA. Key wor s　Turbomachinery;Impeller;Parametric esign;Mesh;Finite element