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Turbulent Inflow

Contact: Sebastian Ehrich

Turbulent Inflow

At the present state, atmospheric wind inflow data for rotor-aerodynamic Computational Fluid Dynamic (CFD) simulations are generated with Large Eddy Simulations (LES) under very high computational costs. Another drawback of those wind fields are the missing intermittent statistics which have to be included in all simulations if one wants to consider extreme events of high wind speed fluctuations within a short time intervall which are highly important for load and fatigue calculations on wind turbines.
In order to avoid those issues, a probabilistic model, the so called Continuous Time Random Walk (CTRW) model, will be implemented in the Opensource Code OpenFOAM. This model shall work for different meteorological conditions and wind behaviours as an inflow model. For industrial usage, an LES subgrid model will be modified in that way, such that the small scale intermittent properties will be transported through different mesh resolutions within the simulation area.

Webmas/yutenh1tr (lenawqn.vov1rspel@uol.dustemznxy) (Changed: 2020-01-23)