The convection of heat-generating fluid in a rotating horizontal cylinder is experimentally investigated. Thethreshold of convection excitation, heat transfer and the structure of convective flows depending on the volumetricpower of heat release, viscosity and relative length of the cavity are studied. It was found that the termovibrationalmechanism is responsible for the average convection excited. The gravity force, rotating in the cavity frame, playsthe role of oscillating force leading to oscillation of non-isothermal fluid relative to the cavity. It is shown that thestructure of averaged convective flows depends on the dimensionless frequency of rotation. At low frequencies theconvection develops in the form of a periodic system of vortices located along the cylinder axis. With frequencygrowth the threshold (critical value of vibrational parameter) of excitation of three-dimensional structures increases.At high frequencies the convection develops as two-dimensional rolls elongated along the axis of rotation. Thethreshold of two-dimensional structures excitation does not depend on the rotation frequency. The analysis of therelatively weak currents generated by the inertial waves below the threshold of thermovibrational convectionexcitation is performed.
展开▼
