Driving forces for interface kinetics and phase field models
نویسندگان
چکیده
منابع مشابه
Computationally efficient phase-field models with interface kinetics.
We present a phase-field model of solidification which allows efficient computations in the regime when interface kinetic effects dominate over capillary effects. The asymptotic analysis required to relate the parameters in the phase field with those of the original sharp-interface model is straightforward, and the resultant phase-field model can be used for a wide range of material parameters.
متن کاملAchieving realistic interface kinetics in phase-field models with a diffusional contrast.
Phase-field models are powerful tools to tackle free-boundary problems. For phase transformations involving diffusion, the evolution of the nonconserved phase field is coupled to the evolution of the conserved diffusion field. Introducing the kinetic cross coupling between these two fields [E. A. Brener and G. Boussinot, Phys. Rev. E 86, 060601(R) (2012)], we solve the long-standing problem of ...
متن کاملAdaptive algorithms for phase field models of some interface problems
We present our on-going works with current and former colleagues at Penn State (L.Q. Chen, W.M. Feng, S. Hu, Z.K. Liu, P. Yu, X. Wang and J. Zhang) on the numerical algorithms for the phase field simulations of some interface problems, ranging from microstructure evolution in multicomponent alloy to multicomponent lipid vesicles. We discuss recent development of highly adaptive computational al...
متن کاملInterface kinetics in phase-field models: isothermal transformations in binary alloys and step dynamics in molecular-beam epitaxy.
We present a unified description of interface kinetic effects in phase-field models for isothermal transformations in binary alloys and steps dynamics in molecular-beam-epitaxy. The phase-field equations of motion incorporate a kinetic cross-coupling between the phase field and the concentration field. This cross-coupling generalizes the phenomenology of kinetic effects and was omitted until re...
متن کاملInterface propagation and microstructure evolution in phase field models of stress-induced martensitic phase transformations
Analytical solutions for diffuse interface propagation are found for two recently developed Landau potentials that account for the phenomenology of stress-induced martensitic phase transformations. The solutions include the interface profile and velocity as a function of temperature and stress tensor. An instability in the interface propagation near lattice instability conditions is studied num...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Solids and Structures
سال: 2013
ISSN: 0020-7683
DOI: 10.1016/j.ijsolstr.2013.03.016