BM 带小叶片的高压比压气机叶轮设计BladeGen实例

Inventory #002498 W5-1
Concepts 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 work
Inventory #002498 W5-4
Initial 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
Training Manual
• After the blade angle adjustments, the angle distribution on the hub and shroud will look like as presented below: Hub Shroud
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
Version 1.0
Training Manual
– Right-click in the Angle view and select: Adjust Blade Angles – In the Leading Edge tab, enter 40ºfor the Beta value. Tang. Beta automatically becomes 50º. Leave all the other values as they are. – In the Trailing Edge tab, enter a Beta angle of 30º . Leave Theta angle 85º – Click OK
Version 1.0
Training Manual
• 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 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 continue
Version 1.0
Training Manual
• To prescribe the Leading/Trailing Edge Shape: – Select Blade | Properties menu commands or the toolbar button located on the left hand 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.
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-6
Inlet and Outlet Modification 进出口修改
Version 1.0
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-7
Blade Angles at the Hub 轮毂叶角
• The Hub Layer is active by default (red dot)
• Design parameters to be entered for the Radial Impeller Template:
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
3/23/2007 © 2007 ANSYS, Inc. All rights reserved. BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-3
Design Parameters 设计参数定义
Version 1.0
Training Manual
பைடு நூலகம்
Version 1.0
Training Manual
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-2
Initial Design Parameters 初始化设计参数
Training Manual
• 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 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
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-9
Blade Angle Distribution 叶角分布
Version 1.0
Version 1.0
BladeGen
HP Compressor Impeller with Splitter 带小叶片的高压比压气机叶轮
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Training Manual
• Select LE Type to be Ellipse with appropriate Elliptic Ratios • Select TE Type to be Cut-off
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
Training Manual
• Activate the Shroud Layer by clicking the black dot at the top of the layer column (it will become red) – Right-click in the Angle view and select: Adjust Blade Angles – In the Leading Edge tab, enter 62.5ºfor the Beta value. Leave all the other values as they are. – In the Trailing Edge tab, enter a Beta angle of 30ºand Theta value to 84º . Leave all other values as they are. – Click OK
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-8
Blade Angles at the Shroud 机匣叶角
Version 1.0
• Optimizing the Meridional View优化子午面视图
Version 1.0
Training Manual
– 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
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-10
Blade Thickness Profile 叶片厚度剖面
Version 1.0
Training Manual
• 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.
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-11
Shape of Leading/Trailing Edge 导缘和尾缘形状
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-12
Blade Property Dialog 叶片属性对话框
Version 1.0
Version 1.0
Training Manual
3/23/2007 © 2007 ANSYS, Inc. All rights reserved.
BladeModeler 11.0 ANSYS, Inc. Proprietary
Inventory #002498 W5-5
Meridional View Optimization 子午面视图优化