초록 ▼

A computer-aided method suitable for assisting in the design of an aircraft by providing the dimensioning aerodynamic forces and other relevant values comprising the following steps: a) Selecting a set of parameters of the aircraft, being said aerodynamic forces and other relevant values dependant o

A computer-aided method suitable for assisting in the design of an aircraft by providing the dimensioning aerodynamic forces and other relevant values comprising the following steps: a) Selecting a set of parameters of the aircraft, being said aerodynamic forces and other relevant values dependant of said parameters; b) Performing flow field CFD RANS computations for a number N1 of different combination of values of said parameters; c) Obtaining said aerodynamic forces and other relevant values for whatever combination of values of said parameters through a reduced-order model, generated by computing the POD modes of the flow variables, expanding the flow variables using said POD modes and obtaining the POD coefficients of said expanded flow variables using a genetic algorithm that minimizes the error associated to the expansion of the Navier-Stokes equations. The invention also refers to a system for carrying out said method.

대표청구항 ▼

The invention claimed is: 1. A computer-aided method for assisting in a design of an aircraft by providing aerodynamic forces, skin values or values distribution around a complete aircraft or an aircraft component, comprising:a) selecting a set of parameters of said complete aircraft or said aircraf

The invention claimed is: 1. A computer-aided method for assisting in a design of an aircraft by providing aerodynamic forces, skin values or values distribution around a complete aircraft or an aircraft component, comprising:a) selecting a set of parameters of said complete aircraft or said aircraft component, for computing said aerodynamic forces, skin values or values distribution dependant of said parameters;b) performing flow field Computational Fluid Dynamic Reynolds Averaged Navier-Stokes (CFD RANS) computations and calculating and storing said aerodynamic forces, skin values or values distribution for different combinations of values of a limited set of parameters;c) computing Proper Orthogonal Decomposition (POD) modes of flow variables;d) expanding the flow variables using said POD modes;e) obtaining POD coefficients of said expanded flow variables using a genetic algorithm that minimizes an error associated with expansion of Navier-Stokes equations;f) generating a reduced-order model using the POD modes and the POD coefficients; andg) obtaining said aerodynamic forces, skin values or values distribution for different combinations of values of the selected set of parameters through reduced-order model.