Setting Up of an Experiment to Test Vertical Axis Water-Turbines

Setting up of an Experimentto Test Vertical Axis Water-

Turbines

Linda Guittet Mil Kusulja Thierry Maitre

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 2

Vertical Axis Water TurbineDavis concept (Blue Energy, Canada)-Airfoiled straight blades-Structures to direct the flowon the turbine-Tests on several turbines inthe 1980s

-Turbine unit : 250 kW-Projects : four-kilometer longtidal fence in the SanBernardino Strait in thePhilippines, 1100 MW

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 3

Vertical Axis Water TurbineKobold concept (Ponte di Archimede S.p.A, Italy )

-Airfoiled straight blades-Balancing mass as pitchangle regulator-Floating platform in MessinaStrait, Italy: 20 kW,Efficiency: 23 %

-Diameter : 6 m-Blade span : 5 m-Chord : 0.4 m-3 blades

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 4

Vertical Axis Water TurbineGorlov concept (GKC Technology, USA)

-Airfoiled twisted blades

-Farm : array of turbine lines

-Many tests done in the 1990sin laboratories and natural sites

Tests in Cape CodCanal :

0.6 m diameterFlow speed : upto 2.2 m/sEfficiency : 35%

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 5

Vertical Axis Water TurbineLEGI concept Achard turbine

Airfoiled bladesWing shaped blades : use ofaeronautic technologyWinglets : limit induced dragStreamlined arms : reduce losses

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 6

Vertical Axis Water TurbineLEGI concept Achard turbine

Turbine unit

Turbine line

Farm

T

r

o

n

o

n

Flotteur

Hydrolienne

Bride

Axe

Lest ouAncrage

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 7

HARVEST ProjectHydrolienne Axe de Rotation Vertical Stabilis

Stabilized Vertical Axis Water Turbine

Aims : Solve the potential technological problems

(hydraulical, mechanical, electrical) for acomplete farm

Optimize Achard turbine and farm structure Consider linked questions : environmental

impacts, laws, setting up andmaintenance,

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 8

HARVEST Project

3S and LDMSNumerical

LDMSNumerical and Exprimental

3SNumerical and Exprimental

Turbine lineSingle water turbineAnchoringMechanical researches :

NumericalComplete farm analysis

LEGINumerical and ExprimentalSingle water turbine

Turbines :NumericalPotential sites

Hydraulical researches :

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 9

LEGI ExperimentHydrodynamic tunnel- Flow speed : 0 to 2.85

m/s (0 to 500 l/s)- Pressure : Pv to 2 bars

Measurements Torque Rotating speed Forces Pressure, flow speed...

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 10

LEGI Experiment

Section : 250 * 700 mm

Manufacturer :Collet-Amblard,

Grenoble

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 11

LEGI ExperimentTurbine performances :

average valuesR? /V8 : Tip speed

ratio

Nc/R : Solidity

SVDCD 2

5.0 =

SVC

PPCtheory

P 3max

21*27

16

== Power

coefficient

Dragcoefficient

I. Paraschivoiu, 2002

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 12

LEGI Experiment

Turbine performances :dynamical features Instability

Dynamic stall

Right/ left asymmetry

Difficulty of calculation

M.T. Brahimi, I.Paraschivoiu, 1995

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 13

LEGI Experiment

Manufacturer : SERAS, CNRS Grenoble

Lenght and diameter : 175 mmChord : 30 mm

Darrieus AchardGorlov

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 14

LEGI Experiment

Tests on differentturbine types

Performances

Instability

Forces

Technologiescomparison

Results to studyfatigue of blades

and axes

Anchoringcalculations

Experiment interests :

Setting up of an experiment to testvertical axis water-turbines

Thank you for your attention

Your questions

20th of October 2004 Setting up of an experiment to test vertical axis water turbine 16

Schmas Annexes

Ur

rR rVr

=0

C N

C T

C D

F

U

Profi l

rrr RVUr+=

CL

Forces on ablade

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Schmas Annexes

Drawingconcerningthe Kobold

turbine

Setting up of an Experiment to Test Vertical Axis Water-TurbinesVertical Axis Water TurbineVertical Axis Water TurbineVertical Axis Water TurbineVertical Axis Water TurbineVertical Axis Water TurbineHARVEST Project Hydrolienne Axe de Rotation Vertical StabilisStabilized Vertical Axis Water TurbineHARVEST ProjectLEGI ExperimentLEGI ExperimentLEGI ExperimentLEGI ExperimentLEGI ExperimentLEGI ExperimentSetting up of an experiment to test vertical axis water-turbinesSchmas AnnexesSchmas Annexes