Abstract
In order to analyze the regelation process, the concept of equivalent water film δ was introduced. It is supposed that the thermal conductivity of a water film is the same as that of a wire; however, the thickness of water film d is adjusted on the basis of the ratio of the thermal conductivity the wire to that of water, i.e., (λ/λw)d. An isothermal line is a line that is perpendicular to the z-axis. The lines can exchange by drawing from equivalent film δ to actual water film d. Heat flows perpendicular to the exchanged isothermal lines on actual film. Heat flow refracts at the interface between the wire and water. The thickness of the water film can be calculated from the measured regelation velocity. It is estimated to be 4～11μm as shown in Table 1. On the other hand, when the thermal conductivity of the wire replaced to water’s one, the equivalent diameter of the wire can be determined. These figures (Fig.5) give a comparison among the regelation rates of different wires.
