On a hot windy summer day, with beautiful clouds in the sky, the air is full of turbulence, like a hot pot of boiling water. In these unsteady surroundings a bird of prey is hovering, completely still
Design and planning of wind turbines involves considerable uncertainties related to estimating the energy production and to assessment of loads and load carrying capacities.
The project aimed at studying the effect of inflow turbulence in blade calculations by using CFD and with several Delayed Detached-Eddy simulations (DDES) for blade profiles, both profiles in free
The project focused on 12 MW wind turbines, i.e. the next generation of multi MW wind turbines being developed for offshore wind farms. These gigantic wind turbines with hub heights of 170 m and rotor
During training of two research students, the project developed new thermocleavable polymer materials for PV cells with a narrow optical band gap, allowing simple production of multilayer structures
A three-dimensional chemical mapping of active plastic PV cell layers has generated new knowledge of degradation causes for PV cells. Based on the mapping, more stable PV cells were made, which in
The project generated results in selected areas of flexible multibody wind turbine modelling. Monte Carlo statistical response simulations and failure probabilities require significantly reduced
In DTU's and LM Wind Power's wind tunnel, the project performed several measurements of the flow behind vortex generators (VG). The project proved that the induced vortices effectively counteract
The project will continue developing a computer model capable of predicting defect concentrations and distributions as a function of parameters during the float-zone process that produces silicon for
The project aimed substantially to strenghten the scientific basis for the wind turbine sector in general with particular focus on the Danish sector’s position in offshore wind farms. To meet these
The project concerns the modelling of aerodynamically generated sound from wind turbines with the aim of predicting and reducing noise emission from wind turbines.
Organic solar cells hold promise as a sustainable energy source and for energy cost reduction. They represent a cost-efficient alternative to silicon-based cells. However, current technologies still
Background: Planning wind farms offshore are generally based on little knowledge of the wind speeds. It is due to the limited amount of offshore meteorological observations worldwide. This again has