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Periodic Surface in CFX-BLADEGEN

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Old   December 31, 2004, 13:23
Default Periodic Surface in CFX-BLADEGEN
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Ali
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Hello every one I have measured dimension of a blade of an axial flow pump. Next, send the data to CFX-BladeGen pass Data Import menu and transfer Data Set into a BladeGen Model. Then, start BladeGenPlus by selected the button on toolbar but BG show me an error " Invalid CFX-BladeGen geometry periodic surface ordering is reverse". What is cause of an error? Ali
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Old   December 31, 2004, 13:38
Default Re: Periodic Surface in CFX-BLADEGEN
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Gang
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It may caused by inconsistence between measured setup and BladeGen model on rotating direction and axis of pump.
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Old   December 31, 2004, 18:56
Default Re: Periodic Surface in CFX-BLADEGEN
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Ali
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Hi Gang, Thanks for reply...Changing the rotation axis didn't work. Change the flow direction worked but it gave a wrong flow direction. Ali
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Old   January 4, 2005, 14:15
Default Re: Periodic Surface in CFX-BLADEGEN
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Gang
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When you open your BG model, is the flow direction correct in the upper left window? In other words, is the flow direction arrow pointing from inlet to outlet of domain?
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Old   January 4, 2005, 14:21
Default Re: Periodic Surface in CFX-BLADEGEN
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Ali
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Yes. When I made the model using BG the arrow points from inlet to outlet. When I want to transfer it BG+ I must modify the direction!! This gives wrong flow direction and names in the mesh. thank you.. and happy new year.. Ali
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Old   January 5, 2005, 13:00
Default Re: Periodic Surface in CFX-BLADEGEN
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Gang
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Is the blade rotating direction correct when you create BG model from measured data? For example, if flow is coming from left to right in your upper left window and pump is rotating in negative Z-direction, your blade pressure surface should face up in your upper right window. Here assume rotating axis is on Z-axis when you measure blade geometry. Another way to check whether blade orientation and rotating direction are right or not is to use animation. Once you show 3D view in your upper right window, right click mouse will bring up popup menu and select animate.
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Old   January 8, 2005, 11:27
Default Re: Periodic Surface in CFX-BLADEGEN
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deLuther
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Try to change span direction - sometimes this works...
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