Correlation for dynamic contact angle

Abstract A correlation is suggested for available experimental measurements of the advancing dynamic contact angle measured through the liquid phase during the displacement of a liquid—gas interface through a glass capillary tube. This same correlation is shown to describe the advancing contact angle as a wire enters a liquid from a gas, so long as the effects of inertia and gravity appear to be negligible. This suggests that experimental measurements of the dynamic contact angle may be independent of the macroscopic geometry.