Boundary Condition In(x,y) space df a 1 a ao dx ay B an an In transformed space dg ao dx an So This equation implies that the shape of the airfoil in the transformed space is the same as the physical space. Hence, the above tranform tion relates the compressible flow over an airfoil in(x, y) space to the in (5, n) space over the same airfoilBoundary Condition :         =   =    = ˆ 1 ˆ dx y df V      = dx dq V In (x,y) space: In transformed space: dx df dx dq So = This Equation implies that the shape of the airfoil in the transformed space is the same as the physical space. Hence, the above tranforma￾tion relates the compressible flow over an airfoil in (x,y) space to the in space over the ( ,) same airfoil