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2D Stator-Rotor Interaction

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Old   November 23, 2018, 20:30
Default 2D Stator-Rotor Interaction
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I am studying the profile losses of the rotor. I have created 2D stator and rotor and applied mixing plane between them.

I am confused about axis of rotation while giving frame motion to 2D rotor. In real scenario, the blades are moving in z-axis. However, in my case I have only 2 axis. In which axis, should I apply axis of rotation.

Secondly, I am also thinking about that can I give transnational velocity instead of rotational velocity. Since, it is a 2D domain, each rotor blades pass through the stator with some transnational velocity.
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Old   November 30, 2018, 14:05
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Use the translational velocity.

In general you can give a rotating frame motion in 2D, but not for your problem. I.e. your stator-rotor sits in the wrong plane.
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Old   December 1, 2018, 01:12
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Hi Muhammad;
In case of 2D simulations rotation does not make sense.
In this cases normally rotation is replaced by translation. in other words rotating domain will be given a linear velocity the magnitude of which is r*omega. (r is radial distance of the 2D profile from turbine axis and omega is angular speed.)
For instance consider a 2D domain with reference frame of XY. If the axial(streamwise) direction is x, the so called velocity will be set in direction of Y. So everything happens in XY plane.

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axis of rotation, fluid, mixing plane model, mrf, rotor

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