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In light beams with circular or elliptic polarization, the transverse energyflow consists of the "spin" and "orbital" parts. Both of them can induce theorbital motion of microparticles suspended within the field of a light beam,and this should be taken into account in experiments on the spin-to-orbitalangular momentum conversion. The character of the spin, orbital and totaltransverse energy flows in circular Laguerre-Gaussian beams is studiedanalytically; graphical representations of the flows in the beam cross section(flow maps) are calculated and analyzed. The spin circulatory flow can bedirected oppositely to the orbital one and/or to the polarization handedness.As a result, the total transverse energy circulation of a beam with homogeneouscircular polarization can be of different handedness in different regions ofthe beam cross section, which are separated by the contours of zero transverseenergy flow. Regarding the particle position within the beam cross section, itcan perform orbital, spinning or combined spinning-orbital motion with variableparameters. Possible applications to optical driving of microparticles arediscussed.

"Spin" and "Orbital" Flows in a Circularly Polarized Paraxial Beam: Orbital Rotation without Orbital Angular Momentum