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 JSoares January 16, 2012 08:10

Hello CFD user´s,

In first place thanks in advance for the time spent reading this post.

I´m trying to simulate an hydraulic turbine, wich have some specific details. In the presente moment, i´ve achived the steps from sketch to simulation, and had no problem with the movement of rotation.

But as i said, there are some specific details, like the blades should move with flow of water. The connection between the blades and the rotor is an rotation axis, wich is simple to draw in solidworks but hard to simulate in fluent.

Sugestions or even doubts would be appreciated?

Thank you.

P.S. : I posted an image with the purpose of facilitating understanding

http://imageshack.us/photo/my-images/402/imagemgyq.jpg/

 JSoares January 18, 2012 13:27

I´m just wondering if i put any silly question?!? If so, explain to me please.
I´ve been working with fluent almost a year in diferent areas, but now i´ve a problem with moving parts.

I really don´t know how to do this, if anyone could help, i will be thankfull.
Yet i post another image so you can see the turbine, and understand better my problem. As you can see the blades are connected to the rotor with a pin, and they move with flow.
I understand when you simulate a turbine with fluent we have to indicate de rotor rotational speed, yet if we want that some part to move with the flow, how to do this?

http://imageshack.us/photo/my-images/703/turbinab.jpg/

Regards,

Joao Soares

 Far January 18, 2012 14:11

All blades move with flow, but we model them in steady state by assuming the flow in rotational reference frame and thereby avoiding many complications. Please elaborate your problem more and why think your problem cant be solved with the standard methods? and why you need the moving mesh algorithm?

 JSoares January 20, 2012 08:20