Surface Tension and Melting Point

SURFACE TENSION OF 4He NEAR THE CRITICAL POINT

The behaviour of simple liquids in the vicinity of the critical point is generally well understood. The relevant bulk quantities like compressibility, correlation length and density difference between the coexisting liquid and vapour phase are described by power laws, whose critical exponents are in close agreement with renormalization group calculations; relationships between these critical ex...

Viscoelasticity and surface tension at the defect-induced first-order melting transition of a vortex lattice

We show that thermally activated interstitial and vacancy defects can lead to first-order melting of a vortex lattice. We obtain good agreement with experimentally measured melting curve, latent heat, and magnetization jumps for YBa2Cu3O72d and Bi2Sr2CaCu2O8. The shear modulus of the vortex liquid is frequency dependent and crosses over from zero at low frequencies to a finite value at high fre...

Melting Point Determination

An improved technique is described for the accurate determination of melting points of metals in the temperature range 1500° to 2500°C. The improvements consist of gradient heating and refinements in cavity preparation to obtain true black-body conditions. The melting point of hafnium, as determined by this method, is set a t 22220-+30°C. This is over 200°C higher than one of the values reporte...

Prediction of Surface Tension in Single and Mixed Electrolyte Solutions

MODELING SURFACE TENSION AND WALL ADHESION IN MOLD FILLING PROCESS

Abstract: In this study an algorithm for mold-filling simulation with consideration of surface tension has been developed based on a SOLA VOF scheme. As the governing equations, the Navier-Stokes equations for incompressible and laminar flows were used. We proposed a way of considering surface tension in mold-filling simulation. The proposed scheme for surface tension was based on the conti...