BM 带小叶片的高压比压气机叶轮设计BladeGen实例

1、Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-1BladeModeler 11.0ANSYS, Inc. ProprietaryBladeGen HP Compressor Impeller with Splitter带小叶片的高压比压气机叶轮Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-2BladeModeler 11.0ANSYS, Inc. ProprietaryTrai

2、ning ManualConcepts概念 In this tutorial we will: Input initial design parameters Input initial angle/thickness parameters Optimize the meridional view Adjust the blade angles Define the shape of LE and TE Save your workVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-3Bla

3、deModeler 11.0ANSYS, Inc. ProprietaryTraining ManualInitial Design Parameters初始化设计参数 CFX-BladeGen allows the user to create a blade system from scratch, using one of six standard initial configuration types. For this example, a Radial Impeller is used. Select the File | New | CFX-BladeGen Model menu

4、 command or toolbar button which will display the Initial Meridional Configuration Dialog Select the Radial Impeller tab Enter the parameters for the initial blade layout (shown on the following slide). Be sure to select Ang/Thk mode in the bottom right corner Press Enter or select the OK button to

5、continueVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-4BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualDesign Parameters设计参数定义 Design parameters to be entered for the Radial Impeller Template:Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #

6、002498W5-5BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualInitial Angle/Thickness叶角和厚度初始定义 Enter Initial Angle/Thickness Parameters: Nominal wrap angle of 85包角85 Thickness of 3 mm Number of blades: 6 Click OK Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-6Blade

7、Modeler 11.0ANSYS, Inc. ProprietaryTraining ManualMeridional View Optimization子午面视图优化 Optimizing the Meridional View优化子午面视图 Inlet and Outlet location (points) have to be adjusted in order to extend the inlet in upstream and the outlet in downstream direction 延长进出口Version 1.03/23/2007 2007 ANSYS, Inc

8、. All rights reserved.Inventory #002498W5-7BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualInlet and Outlet Modification进出口修改 Double click the shroud inlet point (top left) Enter -45 and 69 for the horizontal and vertical values. Click OK. For the hub inlet point (bottom left), enter: -45 and

9、 30 Click OK For the shroud outlet point (top left), enter: 82 and 175 Click OK For the hub outlet point (top right), enter: 86.5 and 175 Click OK Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-8BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualBlade Angles at the

10、 Hub轮毂叶角The Hub Layer is active by default (red dot) Right-click in the Angle view and select: Adjust Blade Angles In the Leading Edge tab, enter 40 for the Beta value. Tang. Beta automatically becomes 50 . Leave all the other values as they are. In the Trailing Edge tab, enter a Beta angle of 30. L

11、eave Theta angle 85 Click OK Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-9BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualBlade Angles at the Shroud机匣叶角Activate the Shroud Layer by clicking the black dot at the top of the layer column (it will become red) Rig

12、ht-click in the Angle view and select: Adjust Blade Angles In the Leading Edge tab, enter 62.5 for the Beta value. Leave all the other values as they are. In the Trailing Edge tab, enter a Beta angle of 30 and Theta value to 84. Leave all other values as they are. Click OK Version 1.03/23/2007 2007

13、ANSYS, Inc. All rights reserved.Inventory #002498W5-10BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualBlade Angle Distribution叶角分布 After the blade angle adjustments, the angle distribution on the hub and shroud will look like as presented below: Hub ShroudVersion 1.03/23/2007 2007 ANSYS, Inc.

14、 All rights reserved.Inventory #002498W5-11BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualBlade Thickness Profile叶片厚度剖面 Blade Thickness can be defined in the Thickness view. In this example, the thickness will be considered constant with the value of 3 mm. No modification will be required.Ve

15、rsion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-12BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualShape of Leading/Trailing Edge导缘和尾缘形状 To prescribe the Leading/Trailing Edge Shape: Select Blade | Properties menu commands or the toolbar button located on the left h

16、and side of the CFX-BladeGen window to set the blade properties. Set the values on LE/TE Ellipse（椭圆） tab as shown on the next slide All other values can remain unchanged. Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-13BladeModeler 11.0ANSYS, Inc. ProprietaryTraining

17、ManualBlade Property Dialog叶片属性对话框 Select LE Type to be Ellipse with appropriate Elliptic Ratios Select TE Type to be Cut-offVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-14BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualAdding Splitter Blade增加分离叶片 Select the B

18、lade Add Splitter menu command or the toolbar button to get Blade Property Dialogue Default values in the Location/Definition tab will be used, so that the splitter will be placed at the main blade mid-pitch This is obtained by selecting Offset (Pitch Fraction) to be 0.5 in definition of the Splitte

19、r Angular Offset Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-15BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualSplitter Blade LE/TE shape分离叶片导缘/尾缘形状 Select the LE/TE Ellipse tab and set the LE Elliptic Ratio to 4 for both hub and shroud In the LE/TE Cut-Off,

20、enable the LE option and enter 0.35 for the hub and 0.4 for the shroud. Click OKVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-16BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualAfter Adding the Splitter Blade After the splitter blade has been created, there are

21、some new features in the GUI to note, as shown in the next two slides. In the Meridional view, the splitter Leading Edge will be shown. In the Auxiliary view, the splitter blade will be shown located at the mid-pitch between main blades. The location of the splitter Leading Edge will also be shown i

22、n angle view and Thickness view. Version 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-17BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualGraphical Layout at the HubVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-18BladeModeler 11.0ANSYS, I

23、nc. ProprietaryTraining ManualGraphical Layout at the ShroudVersion 1.03/23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-19BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualModel Properties Dialog Set the model properties: Model PropertiesEnsure Model Units are SetVersion 1.03/

24、23/2007 2007 ANSYS, Inc. All rights reserved.Inventory #002498W5-20BladeModeler 11.0ANSYS, Inc. ProprietaryTraining ManualSaving the File Save the file File Save As or the Save As icon Filename: HPCompressorImpeller.bgd Go back to the Project page and open DesignModeler (click New geometry) Use the same units that were defined in BladeGen (mm)Version