Physical property measurements for the mathematical modeling of fluid flow in solidification processes

Measurement metllods are being developed to provide values Ibr the density, viscosity, heat capacity, enthalpy, fraction solid, surlace tension, and thermal diflʹusivity and conductivity of commercial alloys in the liquid and mushy states. These data arc needed lbr the mathematical modeling of heat and fluid flow in solidification processes. This paper briefly describes the present state of development of apparatus Ibr the measurement of density by the levitated drop and hydrostatic probe methods and viscosity by the oscillating viscometer in our laboratory.