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Old   August 17, 2006, 07:58
Default Frozen-Roter problem
  #1
Manish Gupta
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Dear all,

i am working on a problem "flow studies inside the runner and draft tube of a francis turbine" i am taking runner as a rotationg part and draft tube as a stationary,but i am not able create interphase between rotor and stator component.please give me some idea i am doing this simulation in CFX 5.7.1.is it a problem of meshing or something elso please help me
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Old   August 17, 2006, 08:00
Default Re: Frozen-Rotor problem *NM*
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Manish Gupta
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Old   August 17, 2006, 08:09
Default Re: Frozen-Roter problem
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Bian
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More info please. As long as you can find a virtual surface to separate rotor and stator, you can define the interface there. However, bad position of the interface affects solution accuracy or convergence.
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Old   August 17, 2006, 08:20
Default Re: Frozen-Roter problem
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Turbine
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When using frozen rotor, be careful to have same areas on the stn part as well as the rotatingpart whenre you want to give interface, else all your engg variables will nto be transported conservatively between 2 domains

GT
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Old   August 17, 2006, 13:35
Default Re: Frozen-Roter problem - ALWAYS CONSERVATIVE
  #5
Robin
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This is not true. All the transported variables are conserved across a GGI, whether it be Frozen Rotor, Stage or just a grid connection.

-Robin
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Old   September 5, 2006, 21:54
Default Re: Frozen-Roter problem
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HekLeR
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One word to describe GT's response: rubbish.
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