Análisis de pérfiles a altos ángulos de ataque mediante métodos multidominio espectral.

PET2008_0142 Ministerio de Ciencia e Innovación

This project will study the aerodynamic properties of a profile a high angles of attack, which in aeronautical environments is called non-linear aerodynamic. This kind of configurations has special interest for the industry because is presented in take-off and landing manoeuvres, having strong impact in flight security. The usual way to study that kind of configurations is by numerical methods that solve the Navier-Stokes equations. That numerical tool defines a preliminary design that must be subsequently tested in, very expensive, wind tunnel experiment and flight test. Any improve in the prediction of flow properties will give the industry the opportunity to save cost and gain competitiveness.

However, the numerical methods used, second order, and the underlying physics modelled by Reynolds Average Navier-Stokes equations (RANS) do not work properly in strongly detached flows. It is necessary to use high order numerical schemes together with more precise physical models like Large Eddy Simulation (LES) or Detached Eddy Simulation (DES) to accurately predict this kind of flows. Regrettably, those methods are genuinely non steady and make intensive use of CPU so it is necessary to put more effort in the design of more efficient numerical tools. Likewise, the project tries to generate an accessible experimental database for internal use, giving the possibility to progress in the understanding of high lift configuration and making possible to compare with the numerical solutions.