Visualization of Supercritical Carbondioxide Pseudo-Boiling inside a Rectangular Channel

摘要

The optical measurement techniques are applied to visualize the flow structure of forced convection heat transfer at pseudo-critical condition of supercritical carbon dioxide. The variations of the density near the wall could be detected by the Shrielen interferometry. The large thermal plume is discovered under the supercritical condition. These plumes have the higher temperature with lower density.