cylindrical coordinates

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Related to Cylindrical coordinate system: Polar coordinates, Spherical coordinate system

cylindrical coordinates

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(Mathematics) three coordinates defining the location of a point in three-dimensional space in terms of its polar coordinates (r, θ) in one plane, usually the (x, y) plane, and its perpendicular distance, z, measured from this plane
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z] is axial principal stretch; r , [theta], z are cylindrical coordinate system at current configuration; R , [THETA], Z are cylindrical coordinate system at initial configuration.
If the motion is analyzed in the cylindrical coordinate system (r[theta]z), where r is the distance of the point from the package axis, [theta] is the polar angle, and z the "height", then the infinitesimal change of the polar angle is d[theta] = [omega]dt.
We introduce a cylindrical coordinate system that rotates around the z axis with an angular velocity [omega].
3 is an orthogonal cylindrical coordinate system (r,0,z), in which the origin is set at the center of the rotating ring, which is rotating at a constant angular velocity, and the fluid between both rings flows outward.