The optimization of process and geometrical parameters is one of the key goals why computer simulation is often used for product development. In many industrial applications fluid-mechanical processes play a major role. Consider for example the simulation of an airfoil at low speed, the simulation of a mixer or a pump, the optimal shape of a body w.r.t. minimal drag forces or separation effects (`lift off`) or the simulation of the mixing progress of fluids with different temperature. Such processes often depend only on a few number of process parameters (also called `design variables`) like in the case of an airfoil the height and the length or in the case of a mixer the length and the angle of the paddles. Unfortunately, for every change in these process parameters the user has to perform a complete – that often means nonstationary – flow simulation which is very costly and which has to be repeated many times, especially if no a-priori knowledge is available. So, one major goal is to automatically adapt the process parameters with a minimum number of flow simulations. Based on the simulation package FeatFlow for the simulation of fluid-processes an optimization software package will be developed, which shall be mainly based on functional evaluations rather than on the calculation of derivatives. For an observed quantity in such a process (drag, lift,...) the new methodology and software tools shall automatically find and optimize the parameter values of such design variables with the help of modern mathematical approaches.