A new method to dynamically measure the surface tension, viscosity, and density of melts

作者：Roach SJ^*; Henein H

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2005, 36(5): 667-676.

DOI：10.1007/s11663-005-0057-5

A new formulation has been developed to describe the fluid dynamics of a liquid draining through an orifice under the influence of gravity. The model relates experimental quantities of head and flow rate, with surface tension, viscosity, and density, facilitating the calculation of all three properties. Experiments performed with molten aluminum at temperatures from 937 to 1173 K indicate that surface tension (N/m) and density (kg/m(3)) are [0.871 - 0.155 X 10(-3) (T - T(liq))] and [2390 - 0.15 (T - T(liq))], which is within 6.5 and 2.5 pct, respectively, of values reported in the literature. The viscosity has been determined to be 5.2 X 10(-4) Nsm(-2), which is significantly less than data reported from other sources. The method is unique because the measurements are performed under highly dynamic conditions.

• 出版日期2005-10