The Aerogust Project: Aeroelastic Gust and Turbulence Modeling

A key element in the design of an aircraft is to make sure it can cope with the stresses arising from the impact of strong winds on the plane’s structure. Calculating the way the aircraft reacts to gusts and turbulences is essential knowledge before a plane can be built.

Currently, most of the data concerning gusts is gathered during expensive wind tunnel experiments and relatively late in the design process when design options have already been narrowed down a lot. Furthermore, there are very few wind tunnels in the world capable of accurately reproducing the conditions for full-size aircraft in flight.

The more accurate the design of the aircraft models before going to testing, the fewer new models need to be made for the wind tunnel. Again, this saves a considerable amount of money and time and allows for entirely new kinds of design to be explored, including the use of different, more flexible materials.

That is why the AeroGust (Aeroelastic Gust Modelling) Project, funded by the European Union, has been set up. Its goal is to better understand the aircraft/gust interactions early in the design process by crafting new efficiencies and higher accuracy in the simulation stage.

Numeca International is proud to be one of the partners in the project, providing expert knowledge and state-of-the-art tools for Computational Fluid Dynamics (CFD) simulation. CFD is crucial in accurately predicting aerodynamic performance, in this project producing precise and detailed models of aerodynamic gust flows around the aircraft structure.

OMNIS/Open-DBS (now Fidelity Flow) was used to model how the airflow interacts with the wing of an aircraft, as shown in the figures below:

Velocity magnitude distribution [m/s] on iso-surface

Using this virtual prototype, an unlimited number of variations in any part of the design can be tested by simply varying input, boundary, geometrical parameters, etc. The objective of the AeroGust project is to generate new computer codes that will streamline the processes of the simulations and tests.

Besides aircraft design, the AeroGust project can also benefit the industry of wind turbine design: Today, the distribution of wind farms is restricted by the fact that strong wind variances and gusts create large loads on the turbines. If we could predict the impact of those gusts more accurately, the structures could also be placed in more challenging regions like the Arctic Circle and the tropics, for example.

For more detailed information, and if you want to keep up with the latest news and events regarding the project: https://wayback.archive-it.org/12090/20190927150834/https://ec.europa.eu/inea/en/horizon-2020/projects/h2020-transport/aviation/aerogust

If you would like to try Fidelity high-order tools for your CFD application, request a demo today!