Rapid calculation of unsteady aircraft loads

Drofelnik, Jernej, Da Ronch, Andrea, Kharlamov, Daniel and Sun, Yan (2018) Rapid calculation of unsteady aircraft loads. In 6th European Conference on Computational Mechanics (ECCM 6). European Conference on Computational Mechanics. 12 pp .

Abstract

An efficient multi–fidelity aerodynamic solver for unsteady flow problems,
combining the unsteady vortex lattice method and Navier–Stokes solver for the infinite–swept wing problem, is presented. The new flow solver is able to correctly reproduce the loads of the three–dimensional Navier–Stokes unsteady, non–linear loads around a representative wing configuration, at a computational cost of a two–dimensional Navier–Stokes computation. Numerical details of the unsteady vortex lattice method solver, developed for this purpose, and its verification are presented. The coupling algorithm of multi–fidelity solver is described, followed by its demonstration around swept–wing configurations. It is demonstrated that the newly developed framework reproduces the loads of a three–dimensional unsteady Navier–Stokes computation, with the speed–up up
to 290–times for the same accuracy.

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Contributors

Author: Andrea Da Ronch

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