TY - CONF

T1 - Large eddy simulation of atmospheric boundary layer over wind farms using a prescribed boundary layer approach

A1 - Chivaee,Hamid Sarlak

A1 - Sørensen,Jens Nørkær

A1 - Mikkelsen,Robert Flemming

AU - Chivaee,Hamid Sarlak

AU - Sørensen,Jens Nørkær

AU - Mikkelsen,Robert Flemming

PB - Springer New York LLC

PY - 2012

Y1 - 2012

N2 - Large eddy simulation (LES) of flow in a wind farm is studied in neutral as well as thermally stratified atmospheric boundary layer (ABL). An approach has been practiced to simulate the flow in a fully developed wind farm boundary layer. The approach is based on the Immersed Boundary Method (IBM) and involves implementation of an arbitrary prescribed initial boundary layer (See [1]). A prescribed initial boundary layer profile is enforced through the computational domain using body forces to maintain a desired flow field. The body forces are then stored and applied on the domain through the simulation and the boundary layer shape will be modified due to the interaction of the turbine wakes and buoyancy contributions. The implemented method is capable of capturing the most important features of wakes of wind farms [1] while having the advantage of resolving the wall layer with a coarser grid than typically required for such problems.

AB - Large eddy simulation (LES) of flow in a wind farm is studied in neutral as well as thermally stratified atmospheric boundary layer (ABL). An approach has been practiced to simulate the flow in a fully developed wind farm boundary layer. The approach is based on the Immersed Boundary Method (IBM) and involves implementation of an arbitrary prescribed initial boundary layer (See [1]). A prescribed initial boundary layer profile is enforced through the computational domain using body forces to maintain a desired flow field. The body forces are then stored and applied on the domain through the simulation and the boundary layer shape will be modified due to the interaction of the turbine wakes and buoyancy contributions. The implemented method is capable of capturing the most important features of wakes of wind farms [1] while having the advantage of resolving the wall layer with a coarser grid than typically required for such problems.

KW - Large eddy simulation models

KW - Boundary layer

KW - Wind power plants

KW - Boundary value problems

KW - Simulation methods

KW - Initial value problems

U2 - 10.1063/1.4756077

DO - 10.1063/1.4756077

JO - A I P Conference Proceedings Series

JF - A I P Conference Proceedings Series

SN - 0094-243X

VL - 1479

SP - 121

EP - 124

ER -