We examine the Galilean invariance of standard lattice Boltzmann methods for two-phase fluids. We show that the known Galilean invariant term that is cubic in the velocities, and is usually neglected, is the main source of Galilean invariance violations. We show that incorporating a correction term can improve the Galilean invariance of the method by up to an order of magnitude. Surprisingly in...

A comprehensive experimental methodology based on analytical centrifugation is presented for the characterization of hydrodynamic non-ideality colloidal particles.

Introduction Thermodynamic non-ideality can lead to serious problems in terms of the analysis of macromolecular behaviour in solution, particularly in molar mass and mass action measurements based on the principles of thermodynamic equilibrium. The term ‘molar mass’ (in g/mol) favoured by the physical chemist is of course equivalent to the molecular mass in daltons, and by ‘mass action’ we mean...

A number of fixed grid finite element methods were tested on problems involving heat conduction with phase change. Only methods that can deal with arbitrary enthalpytemperature relationships were considered. Comparisons were made of temperature gradient vs enthalpy gradients formulations, lumped vs distributed capacitance, timeaverage vs space-average apparent heat capacity, iterative vs non-it...

The effects of thermodynamic non-ideality on the forms of sedimentation equilibrium distributions for several isoelectric proteins have been analysed on the statistical-mechanical basis of excluded volume to obtain an estimate of the extent of protein solvation. Values of the effective solvation parameter delta are reported for ellipsoidal as well as spherical models of the proteins, taken to b...

Abstract Non-ideal thermodynamics of solid solutions can greatly impact materials degradation behavior. We have investigated an actinide silicate solution system (USiO 4 –ThSiO ), demonstrating that thermodynamic non-ideality follows a distinctive, atomic-scale disordering process, which is usually considered as random distribution. Neutron total scattering implemented by pair distribution func...

Dependence of the radiative-convective equilibrium structure lower atmosphere Venus on specification atmospheric thermodynamic model is investigated. A series models including ideal gases, van der Waals and real gases are introduced by use Helmholtz energy given EOS-CG mixture (EOS-CG: Equation State for Combustion Gases Gas-like Mixtures). It demonstrated that profile gas differs significantly...