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Rotation using standard rotatingWallVelocity
rotatingWallVelocity is boundary condition for boundary type wall. rotatingWallVelocity can be used only for rotating wall (patch) that have all faces parallel with the rotation trajectory. For example a cylinder rotating around its axis can have rotatingWallVelocity.
File 0/rotor/U for turbine rotor may have following patch:
".*_cylinder"
{
type rotatingWallVelocity;
origin (0 0 0);
axis (0 0 1);
omega -62.8; // 600 RPM, (RPM/60)*2*PI=rPs
}
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Steady-State
The system of equations is considered to be steady-state, which means all the time derivatives are equal to zero. For more details see e.g. [1].