M & M Lecture Series

Donna Fitzsimmons

Dear colleagues,

Tuesday, 12 September 2017 at 16:00, room TBA, will see a seminar of the inter-faculty, inter-institute Computational Science Lecture Series, hosted by the Twente Centre of Computational Science (TCSC.eu) and the Twente Graduate School Computational Science and Engineering (TGS CSE) that combine ~20 UT groups with a common interest in computational approaches to physics, chemistry, engineering, biology and mathematics.

The lecture entitled

Large eddy simulations and modeling of the interaction between large wind farms and the turbulent atmospheric boundary layer

will be by presented by Richard Stevens from the Physics of Fluids group at the University of Twente


Understanding the interaction between large windfarms and the atmospheric boundary layer (ABL) is crucial to predicting windfarm performance. Wake interactions and coupling between the windfarm array flow physics and the ABL make it difficult to predict power output in the fully developed regime of windfarms. Large eddy simulations (LES) of windfarms are ideally suited to study this regime and have been shown to generate accurate predictions, which are useful for model validation. We present LES results on the performance of large windfarms for different turbine configurations and inter-turbine spacings. Based on these results we develop a windfarm model that combines two widely used analytical wind farm models. A top-down model, which captures the coupling between the wind-farm and the ABL, and a wake model that accurately predicts entrance effects. Our model provides a novel two-way coupling of these approaches that provides improved predictions over its constitutive models.

We hope to see you there,

Wouter, Claudia, and Thomas.