Basic and Applied Research

Journal of Phase Equilibria and Diffusion

, Volume 33, Issue 6, pp 437-442

Open Access This content is freely available online to anyone, anywhere at any time.

Gravity Induced Diffusion: Sedimentation in Condensed Matter

  • Bartek WierzbaAffiliated withFaculty of Materials Science and Ceramics, Interdisciplinary Centre for Materials Modeling, AGH University of Science and Technology Email author 


In the paper the mathematical model describing the gravity induced sedimentation process in multicomponent system is presented. The model is based on the generalized interdiffusion method (bi-velocity method): (1) the volume continuity equation, (2) equation of motion, (3) Cauchy stress tensor and (4) Nernst Planck flux formulae. The method is applied to simulate the sedimentation processes of the selenium isotopes and the ternary InSbGe system.


gravity interdiffusion pressure sedimentation thermodynamics volume continuity