1、XFlow 无网格CFD技术应用培训教程 （2）, 风力发电机（Wind turbine） Henry 2014年4月,1/13/2019,2,Overview,EnergySingle phaseExternal aerodynamicsForce motionConstained motionPost-processing,WS02 Wind turbine,Engine:Dimension: 3DSingle phase externalThermal model: IsothermalAcoustic analysis: off,Global attributes:Automatic
2、turbulence modelWind-tunnelNo gravity lawsInitialization field: Auto,1. Environment: Single phase external,Wind tunnel:Dimensions: (500,200,200)Position: (75,25,0)Ground wall: OnVelocity laws: 10(y+75)/50)0.143 m/s,WS02 Wind turbine,1. Environment: Inlet velocity profile,Right-click,WS02 Wind turbin
3、e,1. Environment: Disable the grid,Disable the grid:Hit the “Preferences” buttonUncheck “Show grid”Hit “Set”,WS02 Wind turbine,Fluid:Air by defaultThermodynamic propertiesViscosity model: Newtonian,2. Materials: Air,WS02 Wind turbine,3. Geometry: Import the geometries,Import geometries:Hit the butto
4、nBrowse the file,WS02 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: 10.0354,Tower:Fixed xConstrained Forced ,3. Geometry: Set the forced motion,Blades:Fixed Constrained Forced x,Blades:Position laws: (0,0,0)Euler anglesA
5、ngular laws: (90*t,0,0),WS02 Wind turbine,3. Geometry: Check the forced motion,Visualize the forced motion:Play forward the framesVisualize the blade rotating,WS02 Wind turbine,Tower:Fixed xConstrained Forced ,3. Geometry: Set the constrained motion,Blades:Fixed Constrained xForced ,Degrees of Freed
6、om:Rotation in X-axis,Solid properties:Mass: 1000 kg,WS02 Wind turbine,Time discretization:Simulation time: 10sAutomatic time step calculationCourant number: 1,4. Simulation: Set the numerical parameters,Data storage:Folder nameFrequency of samples: 20Hz,Resolution:Resolved scale: 8mRefinement: wall
7、s + wakeWake resolution: 0.05mWall resolution: 0.05mWake refinement threshold: 1e-05,WS02 Wind turbine,5. Run the simulation,Run the calculation:Hit button “Run”,WS02 Wind turbine,5. Calculation: Post-processing,Post-processing:Visualization field: VorticityVisualization mode: 3d fieldCutting-plane
8、ZInterpolation mode: On,WS02 Wind turbine,5. Post-Processing: Monitor the rotational speed,Right-click,WS02 Wind turbine,5. Post-Processing: Monitor the rotation angles,Right-click,WS02 Wind turbine,5. Post-Processing: Change the ranges of fields,Change the ranges of fields:Hit the buttonUncheck the automatic rangesInput new rangeHit “Set”,WS02 Wind turbine,5. Post-Processing: Isosurfaces,Volumetric field:Field: VorticityIsosurfaces: OnLevel: 0.2Colored by field: Velocity,WS02 Wind turbine,
