Abstract
Liquid crystal suspension is now widely used for the simultaneous visualization of the flow and temperature fields. To the authors' knowledge, however, only the natural convective fields have been investigated. In the present study, the visualization of a forced convective field was attempted. A heated cylinder was placed in an open channel filled with silicon oil. The fluid was circulated by a rotating waterwheel. The flow and temperature fields of the vortices behind the cylinder were successfully visualized by the liquid crystal suspension.