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**Harvard**

Matsfelt, J. (2015) *Actuator turbine models and trailing edge flow: implementation in an in-house code*. Göteborg : Chalmers University of Technology (Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, nr: 2015:76).

** BibTeX **

@mastersthesis{

Matsfelt2015,

author={Matsfelt, Johanna},

title={Actuator turbine models and trailing edge flow: implementation in an in-house code},

abstract={To be able to simulate a trailing edge flow in CALC some modifications needs to be
done in the code. The main reason for this is that CALC only can handle a computational
domain consisting of one block. Modifications are made both in the multigrid solver that
solves the pressure field and the flow solver. Some of the modifications that are made in
the multigrid solver can be recognized from the implementations in the flow solver but
the multigrid solver uses 1D arrays compared to 3D arrays in the flow solver.
This implementation allows CALC to run a flat plate simulation and this was one of
the validating cases run. One laminar flow and one turbulent flow using the Reynolds
Averaged Navier Stokes (RANS) turbulent model and the results showed good agreement.
One more validating RANS case was used here representing an airfoil instead of
a flat plate. This simulation showed that the flow fulfilled the no slip condition at the
surface of the airfoil which was the focus of the validation.
The second part of this master thesis consisted of implementing two Actuator turbine
models named Actuator disk model (ADM) and Actuator line model (ALM). The
implementation of ADM which is the less accurate model of the two was validated by
an axisymmetric flow using the 5-MW National Renewable Energy Laboratory (NREL)
wind turbine. The ALM model was validated using the same turbine but with a 3D flow
due to its 3D behaviour. The results were acceptable when comparing to the NREL data
and results in [1]. The results from the ADM simulation obtained by restricting the "i
variable in the Gaussian function showed that more consistent predictions of the rotor
thrust and power between different meshes could be obtained.},

publisher={Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola},

place={Göteborg},

year={2015},

series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2015:76},

}

** RefWorks **

RT Generic

SR Electronic

ID 234098

A1 Matsfelt, Johanna

T1 Actuator turbine models and trailing edge flow: implementation in an in-house code

YR 2015

AB To be able to simulate a trailing edge flow in CALC some modifications needs to be
done in the code. The main reason for this is that CALC only can handle a computational
domain consisting of one block. Modifications are made both in the multigrid solver that
solves the pressure field and the flow solver. Some of the modifications that are made in
the multigrid solver can be recognized from the implementations in the flow solver but
the multigrid solver uses 1D arrays compared to 3D arrays in the flow solver.
This implementation allows CALC to run a flat plate simulation and this was one of
the validating cases run. One laminar flow and one turbulent flow using the Reynolds
Averaged Navier Stokes (RANS) turbulent model and the results showed good agreement.
One more validating RANS case was used here representing an airfoil instead of
a flat plate. This simulation showed that the flow fulfilled the no slip condition at the
surface of the airfoil which was the focus of the validation.
The second part of this master thesis consisted of implementing two Actuator turbine
models named Actuator disk model (ADM) and Actuator line model (ALM). The
implementation of ADM which is the less accurate model of the two was validated by
an axisymmetric flow using the 5-MW National Renewable Energy Laboratory (NREL)
wind turbine. The ALM model was validated using the same turbine but with a 3D flow
due to its 3D behaviour. The results were acceptable when comparing to the NREL data
and results in [1]. The results from the ADM simulation obtained by restricting the "i
variable in the Gaussian function showed that more consistent predictions of the rotor
thrust and power between different meshes could be obtained.

PB Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola,

T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2015:76

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/234098/234098.pdf

OL 30