xflow培訓(xùn)講稿無網(wǎng)格cfd技術(shù)應(yīng)用培訓(xùn)教程2風(fēng)力發(fā)電機課件

1、xflow培訓(xùn)講稿無網(wǎng)格cfd技術(shù)應(yīng)用培訓(xùn)教程2風(fēng)力發(fā)電機xflow培訓(xùn)講稿無網(wǎng)格cfd技術(shù)應(yīng)用培訓(xùn)教程2風(fēng)力發(fā)電機Overview Energy Single phase External aerodynamics Force motion Constained motion Post-processingWS02 Wind turbineOverview EnergyWS02 Wind turEngine: Dimension: 3D Single phase external Thermal model: Isothermal Acoustic analysis: offGlobal a

2、ttributes: 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 laws: 10(y+75)/50)0.143 m/sWS02 Wind turbineEngine:Global attributes:1. En1. Environmen

3、t: Inlet velocity profileRight-clickWS02 Wind turbine1. Environment: Inlet velocity1. Environment: Disable the gridDisable the grid: Hit the “Preferences” button Uncheck “Show grid” Hit “Set”WS02 Wind turbine1. Environment: Disable the grFluid: Air by default Thermodynamic properties Viscosity model

4、: Newtonian2. Materials: AirWS02 Wind turbineFluid:2. Materials: AirWS02 3. Geometry: Import the geometriesImport 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: 10.03543. Geomet

5、ry: Import the geometTower: 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 turbineTower:3. Geometry: Set the for3. Geometry: Check the forced motionVisualize the forced motion

6、: Play forward the frames Visualize the blade rotatingWS02 Wind turbine3. Geometry: Check the forced 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 turbineTower:

7、3. Geometry: Set the conTime 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 resolu

8、tion: 0.05m Wake refinement threshold: 1e-05 WS02 Wind turbineTime discretization:4. Simulat5. Run the simulationRun the calculation: Hit button “Run”WS02 Wind turbine5. Run the simulationRun the c5. Calculation: Post-processingPost-processing: Visualization field: Vorticity Visualization mode: 3d f

9、ield Cutting-plane Z Interpolation mode: OnWS02 Wind turbine5. Calculation: Post-processin5. Post-Processing: Monitor the rotational speedRight-clickWS02 Wind turbine5. Post-Processing: Monitor th5. Post-Processing: Monitor the rotation anglesRight-clickWS02 Wind turbine5. Post-Processing: Monitor th5. Post-Processing: Change the ranges of fieldsC