Abstract
Flow and temperature patterns of natural convection in a thermosyphon with rectangular cross section were simulated numerically. Dimension of the thermosyphon model was 100mm height and 3Ox3Omm cross section. The model was placed vertically, and upper 1/3 zone of the total height was cooled, lower 1/3 zone was uniformly heated and middle zone was thermally insulated. Silicon oil was used as a working fluid. The steady natural convection flow appeared under a certain temperature condition. This paper describes numerical results of this flow in detail. In case of temperature difference ΔT=1K symmetrical flow and temperature patterns were displayed.
