METHOD AND SYSTEM FOR QUICKLY CALCULATING THE AERODYNAMIC FORCES ON AN AIRCRAFT IN TRANSONIC CONDITIONS

摘要

The invention relates to a method and system for quickly calculating the aerodynamic forces on an aircraft in transonic conditions. The method involves determining relevant dimensioning values within a predefined parametric space by reconstructing the CFD calculations for an initial set of points in the parametric space using a POD reduced order model which includes the following steps: a) breaking down the complete fluid field for each flow variable into a smooth field and a shockwave field (SWF) in each of said calculations; b) obtaining the POD modes associated with the smooth field and the shockwave field, taking into account all of said calculations; c) obtaining the POD coefficients by means of a genetic algorithm (GA) which minimises an adjustment function; d) calculating said relevant dimensioning values for any combination of values of said parameters using the reduced order model.