How fine is fine enough when doing CFD terrain simulations

Niels N. Sørensen; Andreas Bechmann; Pierre-Elouan Réthoré; Dalibor Cavar; Mark C. Kelly; Ib Troen

How fine is fine enough when doing CFD terrain simulations

Niels N. Sørensen, Andreas Bechmann, Pierre-Elouan Réthoré, Dalibor Cavar, Mark C. Kelly, Ib Troen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

The present work addresses the problemof establishing
the necessary grid resolution to obtain
a given level of numerical accuracy using
a CFD model for prediction of flow over terrain.
It is illustrated, that a very high resolution may
be needed if the numerical difference between
consecutive refinements should be of the order
of one percent for all flow directions. For
the present terrain case, resolution in the order
of 1 billion grid points is needed.

Original language	English
Title of host publication	Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition
Number of pages	6
Publisher	European Wind Energy Association (EWEA)
Publication date	2012
Pages	1167-1172
Publication status	Published - 2012
Event	EWEC 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark Duration: 16 Apr 2012 → 19 Apr 2012 http://events.ewea.org/annual2012/

Conference

Conference	EWEC 2012 - European Wind Energy Conference & Exhibition
Country/Territory	Denmark
City	Copenhagen
Period	16/04/2012 → 19/04/2012
Internet address	http://events.ewea.org/annual2012/

Keywords

Computational Fluid Dynamics
Terrain
Siting
Grid Refinement

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title = "How fine is fine enough when doing CFD terrain simulations",

abstract = "The present work addresses the problemof establishing the necessary grid resolution to obtain a given level of numerical accuracy using a CFD model for prediction of flow over terrain. It is illustrated, that a very high resolution may be needed if the numerical difference between consecutive refinements should be of the order of one percent for all flow directions. For the present terrain case, resolution in the order of 1 billion grid points is needed.",

keywords = "Computational Fluid Dynamics, Terrain, Siting, Grid Refinement",

author = "S{\o}rensen, {Niels N.} and Andreas Bechmann and Pierre-Elouan R{\'e}thor{\'e} and Dalibor Cavar and Kelly, {Mark C.} and Ib Troen",

year = "2012",

language = "English",

pages = "1167--1172",

booktitle = "Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition",

publisher = "European Wind Energy Association (EWEA)",

note = "EWEC 2012 - European Wind Energy Conference & Exhibition, EWEC 2012 ; Conference date: 16-04-2012 Through 19-04-2012",

url = "http://events.ewea.org/annual2012/",

}

How fine is fine enough when doing CFD terrain simulations. / Sørensen, Niels N.; Bechmann, Andreas ; Réthoré, Pierre-Elouan et al.
Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition. European Wind Energy Association (EWEA), 2012. p. 1167-1172.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - How fine is fine enough when doing CFD terrain simulations

AU - Sørensen, Niels N.

AU - Bechmann, Andreas

AU - Réthoré, Pierre-Elouan

AU - Cavar, Dalibor

AU - Kelly, Mark C.

AU - Troen, Ib

PY - 2012

Y1 - 2012

N2 - The present work addresses the problemof establishing the necessary grid resolution to obtain a given level of numerical accuracy using a CFD model for prediction of flow over terrain. It is illustrated, that a very high resolution may be needed if the numerical difference between consecutive refinements should be of the order of one percent for all flow directions. For the present terrain case, resolution in the order of 1 billion grid points is needed.

AB - The present work addresses the problemof establishing the necessary grid resolution to obtain a given level of numerical accuracy using a CFD model for prediction of flow over terrain. It is illustrated, that a very high resolution may be needed if the numerical difference between consecutive refinements should be of the order of one percent for all flow directions. For the present terrain case, resolution in the order of 1 billion grid points is needed.

KW - Computational Fluid Dynamics

KW - Terrain

KW - Siting

KW - Grid Refinement

M3 - Article in proceedings

SP - 1167

EP - 1172

BT - Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition

PB - European Wind Energy Association (EWEA)

T2 - EWEC 2012 - European Wind Energy Conference & Exhibition

Y2 - 16 April 2012 through 19 April 2012

ER -

How fine is fine enough when doing CFD terrain simulations

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Conference

Keywords

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