DISCRETE SHAPE SENSITIVITY EQUATIONS FOR AERODYNAMIC PROBLEMS

Intensive research and development in Computational Fluid Dynamics (CF D) has recently produced many powerful CFD codes to simulate complex a erodynamic phenomena. However, in order to enhance the usefulness of t hese CFD codes for design practice, development of design sensitivity equations compatible to these codes becomes very important. This paper represents a part of such an effort to develop a sensitivity analysis methodology that enables the sensitivity equations to be implemented into existing CFD codes with minimal code modification. The methodolog y is based upon a pre-elimination procedure which accounts for consist ently linearized boundary conditions. Formulations of both the direct differentiation and the adjoint variable methods will be presented in the paper.