抄録
Finite element analysis and NURBS-based computer-aided design had been developed independently until isogeometric analysis (IgA) was introduced by Hughes et al. in 2005. Unlike FEA, in isogeometric analysis the CAD geometry represented by NURBS curves/surfaces/volumes are converted to NURBS elements exactly without any approximations. On the other hand, in aerodynamics it is well known that the leading edge radius of the wing profile plays an important role on the aerodynamic performance of the wing. In this paper, we represent the curvature-controlled 2D wing profile in terms of planar B-spline curve, and construct the 2D B-spline surface outside the wing profile and perform IgA in order to examine the aerodynamic performance of the wing under various leading edge radius.
