Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow

Tilman Koblitz; Andreas Bechmann; Andrey Sogachev; Niels N. Sørensen; Pierre-Elouan Réthoré

doi:10.1002/we.1684

Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow

Tilman Koblitz
, Andreas Bechmann
, Andrey Sogachev
, Niels N. Sørensen
, Pierre-Elouan Réthoré

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

For wind resource assessment, the wind industry is increasingly relying on computational fluid dynamics models of the neutrally stratified surface-layer. So far, physical processes that are important to the whole atmospheric boundary-layer, such as the Coriolis effect, buoyancy forces and heat transport, are mostly ignored. In order to decrease the uncertainty of wind resource assessment, the present work focuses on atmospheric flows that include stability and Coriolis effects. The influence of these effects on the whole atmospheric boundary-layer are examined using a Reynolds-averaged Navier–Stokes k- ε model. To validate the model implementations, results are compared against measurements from several large-scale field campaigns, wind tunnel experiments, and previous simulations and are shown to significantly improve the predictions. Copyright © 2013 John Wiley & Sons, Ltd.

Original language	English
Journal	Wind Energy
Volume	18
Issue number	1
Pages (from-to)	75-89
ISSN	1095-4244
DOIs	https://doi.org/10.1002/we.1684
Publication status	Published - 2015

Bibliographical note

This work has been carried out within the WAUDIT project (Grant no. 238576). This Initial Training Network is a Marie Curie action, funded under the Seventh Framework Program (FP7) of the European Commission. Computations were made possible by the use of the PC-cluster Gorm provided by DCSC and the DTU central computing facility. We would also like to thank the Danish energy agency (EFP07-Metoder til kortlægning af vindforhold i komplekst terræn (ENS-33033-0062)), the Center for Computational Wind Turbine Aerodynamics and Atmospheric Turbulence (under the Danish Council for Strategic Research, Grant no. 09-067216).

Keywords

Atmospheric boundary-layer
k -ε turbulence model
Coriolis effect
Atmospheric stability
CFD
RANS

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@article{0b5665e91972486a98768a261bb34211,

title = "Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow",

abstract = "For wind resource assessment, the wind industry is increasingly relying on computational fluid dynamics models of the neutrally stratified surface-layer. So far, physical processes that are important to the whole atmospheric boundary-layer, such as the Coriolis effect, buoyancy forces and heat transport, are mostly ignored. In order to decrease the uncertainty of wind resource assessment, the present work focuses on atmospheric flows that include stability and Coriolis effects. The influence of these effects on the whole atmospheric boundary-layer are examined using a Reynolds-averaged Navier–Stokes k- ε model. To validate the model implementations, results are compared against measurements from several large-scale field campaigns, wind tunnel experiments, and previous simulations and are shown to significantly improve the predictions. Copyright {\textcopyright} 2013 John Wiley \& Sons, Ltd.",

keywords = "Atmospheric boundary-layer, k -ε turbulence model, Coriolis effect, Atmospheric stability, CFD, RANS",

author = "Tilman Koblitz and Andreas Bechmann and Andrey Sogachev and S{\o}rensen, \{Niels N.\} and Pierre-Elouan R{\'e}thor{\'e}",

note = "This work has been carried out within the WAUDIT project (Grant no. 238576). This Initial Training Network is a Marie Curie action, funded under the Seventh Framework Program (FP7) of the European Commission. Computations were made possible by the use of the PC-cluster Gorm provided by DCSC and the DTU central computing facility. We would also like to thank the Danish energy agency (EFP07-Metoder til kortl{\ae}gning af vindforhold i komplekst terr{\ae}n (ENS-33033-0062)), the Center for Computational Wind Turbine Aerodynamics and Atmospheric Turbulence (under the Danish Council for Strategic Research, Grant no. 09-067216). ",

year = "2015",

doi = "10.1002/we.1684",

language = "English",

volume = "18",

pages = "75--89",

journal = "Wind Energy",

issn = "1095-4244",

publisher = "John Wiley and Sons Ltd",

number = "1",

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T1 - Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow

AU - Koblitz, Tilman

AU - Bechmann, Andreas

AU - Sogachev, Andrey

AU - Sørensen, Niels N.

AU - Réthoré, Pierre-Elouan

N1 - This work has been carried out within the WAUDIT project (Grant no. 238576). This Initial Training Network is a Marie Curie action, funded under the Seventh Framework Program (FP7) of the European Commission. Computations were made possible by the use of the PC-cluster Gorm provided by DCSC and the DTU central computing facility. We would also like to thank the Danish energy agency (EFP07-Metoder til kortlægning af vindforhold i komplekst terræn (ENS-33033-0062)), the Center for Computational Wind Turbine Aerodynamics and Atmospheric Turbulence (under the Danish Council for Strategic Research, Grant no. 09-067216).

PY - 2015

Y1 - 2015

N2 - For wind resource assessment, the wind industry is increasingly relying on computational fluid dynamics models of the neutrally stratified surface-layer. So far, physical processes that are important to the whole atmospheric boundary-layer, such as the Coriolis effect, buoyancy forces and heat transport, are mostly ignored. In order to decrease the uncertainty of wind resource assessment, the present work focuses on atmospheric flows that include stability and Coriolis effects. The influence of these effects on the whole atmospheric boundary-layer are examined using a Reynolds-averaged Navier–Stokes k- ε model. To validate the model implementations, results are compared against measurements from several large-scale field campaigns, wind tunnel experiments, and previous simulations and are shown to significantly improve the predictions. Copyright © 2013 John Wiley & Sons, Ltd.

AB - For wind resource assessment, the wind industry is increasingly relying on computational fluid dynamics models of the neutrally stratified surface-layer. So far, physical processes that are important to the whole atmospheric boundary-layer, such as the Coriolis effect, buoyancy forces and heat transport, are mostly ignored. In order to decrease the uncertainty of wind resource assessment, the present work focuses on atmospheric flows that include stability and Coriolis effects. The influence of these effects on the whole atmospheric boundary-layer are examined using a Reynolds-averaged Navier–Stokes k- ε model. To validate the model implementations, results are compared against measurements from several large-scale field campaigns, wind tunnel experiments, and previous simulations and are shown to significantly improve the predictions. Copyright © 2013 John Wiley & Sons, Ltd.

KW - Atmospheric boundary-layer

KW - k -ε turbulence model

KW - Coriolis effect

KW - Atmospheric stability

KW - CFD

KW - RANS

U2 - 10.1002/we.1684

DO - 10.1002/we.1684

M3 - Journal article

SN - 1095-4244

VL - 18

SP - 75

EP - 89

JO - Wind Energy

JF - Wind Energy

IS - 1

ER -

Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow

Abstract

Bibliographical note

Keywords

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