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1、1VerticalAxisWindTurbinedevelopmentGuilhermeSilvaAbstract:Windpoweris,nowadays,themostpromisingVInducedvelocity;iandsuitablerenewableenergyforrapidandcost-effectiveVBlade’sflowvelocity;implementation.Horizontalaxiswindturbineshavebeenpgreatlydevelopedbutsomeothertechnologies,suchastheVNominalv

2、elocity;ratedverticalaxiswindturbinesarestillinaninitialdevelopmentphase.ThedisparityinthedevelopmentoftheseV?Windvelocity;technologiesremainsunexplained.Nevertheless,thelittledevelopmentmadeinverticalaxiswindturbinesseemsto?Angleofattack;emphasizethistechnologyasbeingoneofgreatpotential.?Angu

3、larposition;Thispresentworkaimedtocreateananalysisofthis?Tipspeedratio;technology.Modelsweredeveloped,andawiderangeof?Density;CFDresultswereobtainedusingthekwSSTmodel.Inthe?Solidity;end,asmallwindturbineintentionallybuiltforthiswork?Angularvelocity;wastested.?Kinematicviscosity.Keywords:VAWTDa

4、rrieusGiromillH-rotorVerticalaxiswindturbineWindpowerKwmodel.I.INTRODUCTIONABBREVIATIONSANDACRONYMSWindenergyistheenergyfromthewind.ThisformofAArea;energycanbeconvertedtoothermoreusefulformssuchasARAspectratio;electricity,throughtheuseofwindturbines.cBladechord;Windpoweristhepower,inW,givenbyt

5、hekinetic[3]CDragcoefficient;energyofwindinagivenarea,perunitoftime:DCLLiftcoefficient;13P??AV,(1)wind?CPPowercoefficient;2COECostofenergy;being?isthedensityofairinkg/m3,AtheareaDDrag;2consideredinmandVthewindvelocityinm/s.EUEuropeanUnion;?fFrequency;Worldwide,theuseofwindpowerhasbeenrising,ar

6、ound25%peryear,sincetheearly1990s.ThisincreasehasbeenFForce;strongerinEurope.Inthefuture,thistrendisexpectedtoFLateralforce;[5]ncontinuemainlythroughtheuseofoffshoreareas.FtTangentialforce;Theefficiencyofwindturbinesisnormallycharacterized[3]HAWTHorizontalaxiswindturbine;bythepowercoefficient:

7、IMomentofinertia;PPturbineturbineC??.(2)LLift;P1Pwind3LCLifetimecosts;?AV?2LEOLifetimeenergyoutput;MWindturbinescanbedividedintotwotypes.IndragTorque;nturbines,movementisproducedbytheairdragwhileinliftNumberofblades;turbinesmovementispr