Airfoil Inverse Design Software Based On The Disc Method Development

In this paper the Direct Iterative Surface Curvature(DISC) design method is presented for designing airfoils at transonic speeds. The design method used here is relatively independent with the direct procedure of calculation of flow solver by finite volume method , other flow solvers can also be easily coupled with this design method.The difficulty of inverse design method is how to develop the target pressure distribution. In this approach, an target pressure distribution is developed using a set of control point and require only global parameters as input. The chordwise locations and pressures of these points are then aptly adjusted during process to satisfy the flow and geometric constraints. Although the DISC design method was used in this study, the target generation and modification procedures can be used with any design method that uses a specified pressure distribution as its objective.The results of test cases indicate that the flow parameters for the final design met the requirements and that the geometric parameters were fairly close to the desired values. Thus, the DISC design method offers an efficient approach to aerodynamic design.DISC design method is an iterative process. Because of complexity of determining parameters, so it can reduce the workload using graphic user interface. A software approach to accomplish the procedure is discussed in this thesis, and the theory of developing user interface, which applies OOP concept, is also presented. Because of the friendly interface, the software is convenient and reliable to use.