Modelling uncertainty in t-RANS simulations of thermally stratified forest canopy flows for wind energy studies

Cian J. Desmond; Simon Watson; Christiane Montavon; Jimmy Murphy

doi:10.3390/en11071703

Modelling uncertainty in t-RANS simulations of thermally stratified forest canopy flows for wind energy studies

Cian J. Desmond^*, Simon Watson, Christiane Montavon, Jimmy Murphy

^*Corresponding author for this work

Wind Energy

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Abstract

The flow over densely forested terrain under neutral and non-neutral conditions is considered using commercially available computational fluid dynamics (CFD) software. Results are validated against data from a site in Northeastern France. It is shown that the effects of both neutral and stable atmospheric stratifications can be modelled numerically using state of the art methodologies whilst unstable stratifications will require further consideration. The sensitivity of the numerical model to parameters such as canopy height and canopy density is assessed and it is shown that atmospheric stability is the prevailing source of modelling uncertainty for the study.

Original language	English
Article number	1703
Number of pages	26
Journal	Energies
Volume	11
Issue number	7
DOIs	https://doi.org/10.3390/en11071703
Publication status	Published - 1 Jan 2018

Keywords

Canopy
Computational fluid dynamics (CFD)
Forest
Non-neutral
Site assessment
Vaudeville-le-Haut
Wind energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/en11071703

energies-11-01703 (1)Final published version, 2.16 MBLicence: CC BY

Cite this

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AU - Desmond, Cian J.

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AU - Montavon, Christiane

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N2 - The flow over densely forested terrain under neutral and non-neutral conditions is considered using commercially available computational fluid dynamics (CFD) software. Results are validated against data from a site in Northeastern France. It is shown that the effects of both neutral and stable atmospheric stratifications can be modelled numerically using state of the art methodologies whilst unstable stratifications will require further consideration. The sensitivity of the numerical model to parameters such as canopy height and canopy density is assessed and it is shown that atmospheric stability is the prevailing source of modelling uncertainty for the study.

AB - The flow over densely forested terrain under neutral and non-neutral conditions is considered using commercially available computational fluid dynamics (CFD) software. Results are validated against data from a site in Northeastern France. It is shown that the effects of both neutral and stable atmospheric stratifications can be modelled numerically using state of the art methodologies whilst unstable stratifications will require further consideration. The sensitivity of the numerical model to parameters such as canopy height and canopy density is assessed and it is shown that atmospheric stability is the prevailing source of modelling uncertainty for the study.

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KW - Computational fluid dynamics (CFD)

KW - Forest

KW - Non-neutral

KW - Site assessment

KW - Vaudeville-le-Haut

KW - Wind energy

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JO - Energies

JF - Energies

IS - 7

M1 - 1703

ER -

Modelling uncertainty in t-RANS simulations of thermally stratified forest canopy flows for wind energy studies

Abstract

Keywords

UN SDGs

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