A1 Journal article (refereed), original research

Large-eddy simulations for hill terrains: validation with wind-tunnel and field measurements


Publication Details
Authors: Chaudhari Ashvinkumar, Vuorinen Ville, Hämäläinen Jari, Hellsten Antti
Publisher: Springer Verlag (Germany)
Publication year: 2017
Language: English
ISSN: 2238-3603
eISSN: 1807-0302
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract

Development and validation of large-eddy simulation (LES) framework to
study atmospheric boundary layer flows over complex terrains is reported
here. The LES model uses the fourth-order time-accurate Runge–Kutta
scheme and a fractional step method. The inflow boundary conditions are
generated by using the so-called recycling (or mapping) technique.
Evaluation of potential in-land wind park locations is the main
application of the validated model. In this work, LES are carried out
for turbulent boundary-layer flows over both simple and complex hill
geometries. The prediction of the flow separation and reattachment
length for a steeper wind-tunnel hill was closer to the measurements
than previous numerical studies reported by other authors for the same
hill geometry. For the complex hill case, the LES model showed good
agreement with full-scale measurements


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Last updated on 2019-11-10 at 11:13