CFD modeling of the Neutral Atmospheric Boundary Layer above Inhomogeneous forest
Typ
Examensarbete för masterexamen
Program
Applied mechanics (MPAME), MSc
Publicerad
2020
Författare
Kleruu, Alfred Andrew
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Homogeneous assumption of distribution of forest canopy has been a keen study
in several works in assessing the effect of forest canopy on the mean velocity profile
and turbulence within a wind farm. While this assumption plays a vital role
in wind energy assessment, it doesn’t represent the realistic approach given by the
inhomogeneous (heterogeneous) assumption. In this study the Large-Eddy Simulation
(LES) is used to model the neutral Atmospheric Boundary Layer (ABL)
over a heterogeneous forest wind farm. This is done by utilizing the power of the
Computational Fluid Dynamics (CFD) tool, STAR-CCM+ software. Thereafter the
structural dynamic response of the wind turbines are assessed using the aero-elastic
solver FAST. Comparisons are made between two simulation cases (heterogeneous
versus homogeneous forest canopy distribution) and it is seen that the homogeneous
forest assumption over-predicts turbulent kinetic energy levels the wind turbines are
subjected to compared to the heterogeneous forest assumption.
Beskrivning
Ämne/nyckelord
Wind turbine , Atmospheric boundary layer , Large-Eddy Simulation , Homogeneous forest , Inhomogeneous forest , STAR-CCM+ , FAST