1、xflow培训讲稿无网格培训讲稿无网格cfd技技术应用培训教程术应用培训教程2风力发电风力发电机机Overview Energy Single phase External aerodynamics Force motion Constained motion Post-processingWS02 Wind turbineEngine:Dimension:3D Single phase external Thermal model:Isothermal Acoustic analysis:offGlobal attributes:Automatic turbulence model Wind
2、-tunnel No gravity laws Initialization field:Auto1.Environment:Single phase externalWind tunnel:Dimensions:(500,200,200)Position:(75,25,0)Ground wall:On Velocity laws:10(y+75)/50)0.143 m/sWS02 Wind turbine1.Environment:Inlet velocity profileRight-clickWS02 Wind turbine1.Environment:Disable the gridD
3、isable the grid:Hit the“Preferences”button Uncheck“Show grid”Hit“Set”WS02 Wind turbineFluid:Air by default Thermodynamic properties Viscosity model:Newtonian2.Materials:AirWS02 Wind turbine3.Geometry:Import the geometriesImport geometries:Hit the button Browse the fileWS02 Wind turbine*Axis X:0,47.9
4、865 Size:47.9865*Axis Y:-76.921,5.01771 Size:81.9387*Axis Z:-5.01771,5.01771 Size:10.0354Tower:Fixed x Constrained Forced 3.Geometry:Set the forced motionBlades:Fixed Constrained ForcedxBlades:Position laws:(0,0,0)Euler angles Angular laws:(90*t,0,0)WS02 Wind turbine3.Geometry:Check the forced motio
5、nVisualize the forced motion:Play forward the frames Visualize the blade rotatingWS02 Wind turbineTower:Fixed x Constrained Forced 3.Geometry:Set the constrained motionBlades:Fixed Constrainedx Forced Degrees of Freedom:Rotation in X-axisSolid properties:Mass:1000 kgWS02 Wind turbineTime discretizat
6、ion:Simulation time:10s Automatic time step calculation Courant number:14.Simulation:Set the numerical parametersData storage:Folder name Frequency of samples:20HzResolution:Resolved scale:8m Refinement:walls+wake Wake resolution:0.05m Wall resolution:0.05m Wake refinement threshold:1e-05 WS02 Wind
7、turbine5.Run the simulationRun the calculation:Hit button“Run”WS02 Wind turbine5.Calculation:Post-processingPost-processing:Visualization field:Vorticity Visualization mode:3d field Cutting-plane Z Interpolation mode:OnWS02 Wind turbine5.Post-Processing:Monitor the rotational speedRight-clickWS02 Wind turbine5.Post-Processing:Monitor the rotation anglesRight-clickWS02 Wind turbine5.Post-Processing:Change the ranges of fieldsChange the ranges of fields:Hit the button Uncheck the automatic ranges Input new range Hit“Set”WS02 Wind turbine
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