? 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
6
Inlet and Outlet Modification 进出口修改
9
Blade 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:
? Nominal wrap angle of 85°包角85 ° ? Thickness of 3 mm ? Number of blades: 6 ? Click OK
5
Meridional View Optimization 子午面视图优化
? Optimizing the Meridional View优化子午面视图
BladeGen
HP Compressor Impeller with Splitter 带小叶片的高压比压气机叶轮
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
? 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 40ofor the Beta value. Tang. Beta
3
Design Parameters 设计参数定义
? Design parameters to be entered for the Radial Impeller Template:
4
Initial Angle/Thickness 叶角和厚度初始定义
? Enter Initial Angle/Thickness Parameters:
? 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
7
Blade Angles at the Hub 轮毂叶角
8
Blade 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) ? 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 30o and Theta value to 84o. Leave all other values as they are. ? Click OK
2
Initial 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 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
automatve all the other values as they are. ? In the Trailing Edge tab, enter a Beta angle of 30o. Leave Theta
angle 85o ? Click OK