Surrogate modelling of wind fields from point-wise atmospheric turbulence measurements. Issue 2 (1st May 2022)

• Record Type: Journal Article
• Authors: Friedrich, Jan; Moreno, Daniela; Sinhuber, Michael; Wächter, Matthias; Peinke, Joachim
• Is Part Of: Journal of physics. Volume 2265:Issue 2(2022)
• Publication Date: 2022-05-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/2265/2/022026
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We present an advanced model for the generation of synthetic wind fields that can be understood as an extension of the well-known Mann model. In contrast to such Gaussian random field models which control second-order statistics (i.e., velocity correlation tensors or spectra), we demonstrate that our extended model incorporates the effects of higherorder statistics as well. In particular, the empirically observed phenomenon of small-scale intermittency, a key feature of atmospheric turbulent flows, can be reproduced with high accuracy and at considerably low computational cost. Our method is based on a recently developed multipoint statistical description of a turbulent velocity field [J. Friedrich et al., J. Phys. Complex. 2 045006 (2021)] and consists of a superposition of multivariate Gaussian statistics with fluctuating covariances. Furthermore, we explicitly show how such superstatistical Mann fields can be constraint on a certain number of point-wise measurement data. We give an outlook on the relevance of such surrogate wind fields in the context of fatigue loads on wind turbines.