The Fifth Symposium on OpenFOAM in Wind Energy (SOWE 2017)
Wind Turbine Installation on Offshore Fish Farm Feed Barge
Svein Erik Nuland ([email protected] / [email protected])
Master student, Faculty of Science and Technology – Mechanical and Structural Engineering and Materials Science
Universitetet i Stavanger
uis.no
Overview
▪
▪
▪
▪
▪
Motivation
Method
Case
CFD Model
Results
▪ Velocity streamlines
▪ Power Output and Torque reduction
▪ Cost
▪ Conclusion and further works
▪ References
Motivation
Motivation
▪ Approximate 1000 fish farms in
Norway [1]
▪ 50% Connected to grid
▪ 50% Diesel generators
Motivation
▪ Approximate 1000 fish farms in
Norway [1]
▪ 50% Connected to grid
▪ 50% Diesel generators
▪ Reduce CO2 emissions and lower
diesel consumption, Helleik S. [2]
Comparing energy systems
NOK
10 000 000
9 000 000
8 000 000
7 000 000
6 000 000
5 000 000
4 000 000
3 000 000
2 000 000
1 000 000
0
Pure 1Diesel
capital
2
Hybrid
Fuel
Operating
100%3renewable
Replacement
Motivation
▪ Approximate 1000 fish farms in
Norway [1]
▪ 50% Connected to grid
▪ 50% Diesel generators
▪ Reduce CO2 emissions and lower
diesel consumption, Helleik S. [2]
Motivation
▪ Approximate 1000 fish farms in
Norway [1]
Power consumption
▪ Reduce CO2 emissions and lower
diesel consumption, Helleik S. [2]
▪ Gwind [3]
▪ Stavanger based company
▪ Off-grid energy
Winter
[KW]
▪ 50% Connected to grid
▪ 50% Diesel generators
Summer
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
[TIME]
Motivation
▪ Approximate 1000 fish farms in
Norway [1]
Power consumption
▪ Reduce CO2 emissions and lower
diesel consumption, Helleik S. [2]
▪ Gwind [3]
▪ Stavanger based company
▪ Off-grid energy
▪ Investigate wind flow over
the feed barge
▪ Power generation
▪ Different tower heights
Winter
[KW]
▪ 50% Connected to grid
▪ 50% Diesel generators
Summer
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
[TIME]
Method
▪ Model: Actuator line modelling of vertical-axis turbines by
Bachant P., Goude A., Wosnik M. [4]
▪ UNH-RVAT
Method
▪ Model: Actuator line modelling of vertical-axis turbines by
Bachant P., Goude A., Wosnik M. [4]
▪ UNH-RVAT
▪ turbinesFoam library [5]
▪ Actuator Line Model
▪ Horizontal Axis Wind Turbine
▪ Vertical Axis Wind Turbine
Method
▪ Model: Actuator line modelling of vertical-axis turbines by
Bachant P., Goude A., Wosnik M. [4]
▪ UNH-RVAT
▪ turbinesFoam library [5]
▪ Actuator Line Model
▪ Horizontal Axis Wind Turbine
▪ Vertical Axis Wind Turbine
▪ Developed based on L.Riva’s work [6]
Case
▪ Grieg Seafood Rogaland [7]
▪ Tallaksholmen
Case
▪ Grieg Seafood Rogaland [7]
▪ Tallaksholmen
▪ Wind measurement campaign
▪ 5.7 m/s
▪ Main wind direction southeast
Case
▪ Grieg Seafood Rogaland [7]
▪ Tallaksholmen
▪ Wind measurement campaign
▪ 5.7 m/s
▪ Main wind direction southeast
▪ GSFR provided barge drawings,
simplified 3D model created
▪ Fixed wind turbine placement
CFD Model
▪ Mesh generated using
snappyHexMesh
▪ Base mesh 100k cells
CFD Model
▪ Mesh generated using
snappyHexMesh
▪ Base mesh 100k cells
▪ Refinement near ALM region
▪ Turbine Cell Zone is 25696 cells
▪ pimpleFoam solver
▪ k-epsilon turbulence model
▪ NACA 0021 airfoil data for
VAWT
▪ Atmospheric Boundary Layer
Results - Velocity streamlines
(https://youtu.be/Xjzx43RoTPc)
Results - Power output and Torque reduction
Tower height
PowerCoeff
DragCoeff
TorqueCoeff
Torque
Power
Percentage
Torque reduction
10m-6m
10m-4m
6m-4m
4m
0,29
1,17
0,15
1,52
33,08
79,8
-9 %
-20 %
-12 %
6m
0,33
1,25
0,17
1,74
37,78
91,2
10m
0,36
1,31
0,19
1,91
41,43
100
[-]
[-]
[-]
[Nm]
[W]
[%]
Results – Cost
▪ Cash flow for different tower
heights
300000
▪ NPV
▪ Investment cost
▪ 10m: 256 000 NOK
▪ 6m: 238 500 NOK
▪ 4m: 221 000 NOK
250000
200000
NOK
▪ 10m: 275 000 NOK
▪ 6m: 243 586 NOK
▪ 4m: 203 164 NOK
150000
NPV
Investment cost
100000
50000
0
10m
6m
Tower Height
4m
Conclusion and further works
▪ Recommending 4 meter tower
▪
▪
▪
▪
Lower investment cost
Lower installation cost
Lower fundament cost
Easy to lower
▪ Compare HAWT and VAWT ALM
▪ Compare with another fish
barge
▪ Operational performance
compared with simulations
when/if a wind turbine are
installed, to verify the
computational approach
References
[1] Kartverket.no. (2017, 23.02). Fishfarms. Available: https://kart.fiskeridir.no/
[2] H. L. Syse, "Investigating Off-Grid Energy Solutions for the Salmon Farming Industry," Master, University of Strathclyde and Universitetet i
Stavanger, 2016.
[3] Gwind. (2017, 20.02). Gwind. Available: http://www.gwind.no/
[4] P. Bachant, A. Goude, and M. Wosnik, "Actuator line modeling of vertical-axis turbines," arXiv preprint arXiv:1605.01449, 2016
[5] P. Bachant, A. Goude, and M. Wosnik. (2016, 23.02). turbinesFoam: v0.0.7. Available: https://doi.org/10.5281/zenodo.49422
[6] L. Riva, "Implementation and Application of the Actuator Line Model by OpenFOAM for a Vertical Axis Wind Turbine set on a University of
Stavanger building roof," Master thesis, University of Stavanger and Politecnico di Milan, Unpublished, 2017.
[7] G. Seafood. (2017, 23.02). Grieg Seafood Rogaland. Available: http://www.griegseafood.no/produksjon/grieg-seafood-rogaland-gsfr/
Acknowledgement
Research Network for Sustainable Energy
Supervisors:
Siri M. Kalvig – UiS
Knut-Erik Giljarhus – UiS
Jean-Baptiste Curien - Gwind