Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow

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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 languageEnglish
JournalWind Energy
Volume18
Issue number1
Pages (from-to)75-89
ISSN1095-4244
DOIs
Publication statusPublished - 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

Cite this

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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 {\circledC} 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 = "JohnWiley & Sons Ltd.",
number = "1",

}

Computational Fluid Dynamics model of stratified atmospheric boundary-layer flow. / Koblitz, Tilman; Bechmann, Andreas; Sogachev, Andrey; Sørensen, Niels N.; Réthoré, Pierre-Elouan.

In: Wind Energy, Vol. 18, No. 1, 2015, p. 75-89.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

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

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KW - CFD

KW - RANS

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