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Farfield Setup for horizontel Turbine in Open Enviroment (Stationary)

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Old   October 18, 2016, 23:42
Default Farfield Setup for horizontel Turbine in Open Enviroment (Stationary)
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Goeran Gabriel
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Hello.I need zour help

I want to set up the far field for an SRF of an one-blade horizontal wind turbine.

The farfield should include:

-Geometry of a cylinder
-velocity inlet with the speed of the Wind (10m/s)
-Rotational Motion Frame with the Speed of the windturbine (300rpm)
(in this case I can solve a stationairy problem, if I put in an stationary blade)

Aim:
The Aim is to set up a far field which has straight Streamlines from inlet to outlet, if I look at it with the same speed as the Frame is turning.

Problem: the streamlines always get an additional motion.
In Case 1 I think the streamlines get a negative acceleration of the non moving outlet.
In Case 2 I thougt it's just a problem with a bad mesh, but even with a finer mesh the results getting more worse!

I tried different setups. check the images please.

So would be happy if someone can figure out the problem and can help me (sorry for my bad english language)
Attached Images
File Type: jpg Case1.jpg (114.3 KB, 7 views)
File Type: jpg Case2.jpg (96.4 KB, 5 views)
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Old   October 19, 2016, 07:06
Default To put it on a nutshell
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Goeran Gabriel
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I need a cylindrical Fluid which has a homogenous translational velocity in the direction of its main axis and a homogenous rotational velocity around the same axis.

Thanks
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hawt, hawt wind turbine, motion frame, radial equilibrium, srf

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