OPTIMIZED-COST METHOD FOR COMPUTER-ASSISTED CALCULATION OF THE AERODYNAMIC FORCES IN AN AIRCRAFT

摘要

Optimized-cost method for computer-assisted calculation of the aerodynamic forces in an aircraft, so as to provide values of dimensional variables, dependent on a predefined set of parameters, for the entire aircraft or aircraft component, which comprises the following steps: a) defining a mesh in the parametric space; b) obtaining a suitable reduced order model (ROM), in particular a POD model, for calculating said variables for any point in the parametric space by means of a repetitive process. CFD is used to calculate said variables at a set of suitably selected points in the parametric space, which are used to obtain approximate values, via ROM and ad-hoc interpolation, of the dimensional variables at any other point of the parametric space. The method minimizes the required number of CFD calculations (so as to minimize the computational cost which depends basically on this number) for a given error level.