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

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.

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

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

One word to describe GT's response: rubbish.