1、学习改变命运学习改变命运, ,知识创造未来知识创造未来2022年4月26日星期二XFlow培训讲稿无网格培训讲稿无网格CFD技术应用培训教程技术应用培训教程2风力发电机风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来Overview Energy Single phase External aerodynamics Force motion Constained motion Post-processingWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来Engine: Dimens
2、ion: 3D Single phase external Thermal model: Isothermal Acoustic analysis: offGlobal attributes: Automatic turbulence model Wind-tunnel No gravity laws Initialization field: Auto1. Environment: Single phase externalWind tunnel: Dimensions: (500,200,200) Position: (75,25,0) Ground wall: On Velocity l
3、aws: 10(y+75)/50)0.143 m/sWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来1. Environment: Inlet velocity profileRight-clickWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来1. Environment: Disable the gridDisable the grid: Hit the “Preferences” button
4、Uncheck “Show grid” Hit “Set”WS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来Fluid: Air by default Thermodynamic properties Viscosity model: Newtonian2. Materials: AirWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来3. Geometry: Import the geometriesI
5、mport geometries: Hit the button Browse the fileWS02 Wind turbine* Axis X: 0 , 47.9865 Size: 47.9865* Axis Y: -76.921 , 5.01771 Size: 81.9387* Axis Z: -5.01771 , 5.01771 Size: 10.0354XFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来Tower: Fixed x Constrained Forced 3. Geometry: Set the forced
6、 motionBlades: Fixed Constrained ForcedxBlades: Position laws: (0,0,0) Euler angles Angular laws: (90*t,0,0)WS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来3. Geometry: Check the forced motionVisualize the forced motion: Play forward the frames Visualize the blade rotatingWS
7、02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来Tower: 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 turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学
8、习改变命运, ,知识创造未来知识创造未来Time discretization: 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
9、: 0.05m Wake refinement threshold: 1e-05 WS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来5. Run the simulationRun the calculation: Hit button “Run”WS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来5. Calculation: Post-processingPost-processing: Visuali
10、zation field: Vorticity Visualization mode: 3d field Cutting-plane Z Interpolation mode: OnWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来5. Post-Processing: Monitor the rotational speedRight-clickWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来5. P
11、ost-Processing: Monitor the rotation anglesRight-clickWS02 Wind turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机学习改变命运学习改变命运, ,知识创造未来知识创造未来5. 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 turbineXFlow培训讲稿无网格CFD技术应用培训教程2风力发电机
