518 Estimation of Dynamic Surface Tension
Details
We observed liquids dripping out of an aperture at low Reynolds number using CCD camera, measured the mass of a drop and the velocity of falling drops, and estimated dynamic surface tensions. Reynolds number ranged from 1 to 200. The solutions tested were PEG solutions in water. A modeling for large molecules was presented for predicting the normalized dynamic surface tension of polymer solutions. It was confirmed that the expression obtained by this model approximately agrees with the experimental values.
