Wind turbines are large and complex machines which operate in a highly unsteady environment. Due to the spatially and temporally stochastic nature of the wind resource, a large amount of simulation data is needed when one wants to assess the lifetime of such a machine. Both extreme events, such as storms, strong gusts or significant wind direction ...
Diese Bachelorarbeit präsentiert die Implementierung und Validierung einer Partitionierungsstrategie mit graphentheoretischem Ansatz für aeroelastische Berechnungen in thermischen Turbomaschinen für den Rolls-Royce plc. (RR) firmeneigenen Strömungslöser AU3D. Der Schwerpunkt liegt hierbei auf der effizienten Parallelisierung von reduzierten und den...
The present work describes the extension of an existing aeroelastic coupling environment to free-flying aircraft with rigid-body degrees of freedom. Aeroelasticity affects an aircraft in terms of performance, economics and operational safety. Therefore, fluid-structure interaction has to be taken into account early on in the design process. In the ...
The flow about high-lift configurations is characterized by complex physics which include the interaction of boundary layers and wakes as well as laminar-turbulent transition. The design of most aircraft relies on lightweight construction which decreases the stiffness of the wing. The elastic properties of the wing also influence the performance of...
In this work the concept of a new time step control is developed for an adaptive flow solver to solve (a)synchronously (pseudo)transient problems of the fluid-structure interaction numerically robust while coupling the flow solver with a structure solver algebraically (partitioned coupling). By the analytically determined APRIORI time steps it faci...
In order to assure economic efficiency and operational safety of new aircrafts, it is necessary to accurately consider the interaction of the elastic aircraft structure and the airflow in early stages of design. For a reliable prediction of effects arising from the interaction of the fluid and the structure the simultaneous solution of the governin...
Starting from a Finite-Volume Method solving the Navier-Stokes equations for compressible fluid flow and a Finite-Element Method based on quasi one-dimensional Timoshenko beam elements for structural dynamics, a numerical method for coupled aeroelastic problems of flight vehicles is developed. Using the method, extended aerodynamic stability deriva...
The direct numerical simulation of fluid-structure-interaction has received a lot of attention in recent years. Due to the growing size of planned commercial airplanes and the widespread use of lightweight-structures leading to large elastic deflections in flight, great interest of commercial applications of such simulation techniques has developed...
