【摘要】 本文建立三角冀前缘分离涡的双层模型,内层为分离涡涡核;外层为无旋的势流场,它提供涡核的初始条件和外缘条件。在不可压的绕流条件下,该法不仅可以计算破裂的初始攻角,而且可以计算超过临界攻角后,破裂位置在弦向的变化规律。理论计算与实验比较很吻合。因而,也表明了破裂位置与雷诺数关系不大的特性。更多还原

【Abstract】 A double layer mode was established,which can be used to describe the separating vortex flow over the delta wing leading-edge.The inner layer of this double layer mode is the vortex core and outer layer is the irrotational potential flow,both these provide the initial and outer edge conditions which are necessary for solveing vortex core development.In the incompressible flow this method not only can compute the initial breakdown angles of attack,but also can compute the breakdown points along the line of the root chord when the angles of attack is more than the critical ones.The theoretical results agree with the experiment measures well and show that the breakdown points are insensible to Reynolds number.更多还原