Numerical study of phase-separation behavior under temperature gradient

Araki, Takeaki; Tanaka, Hajime
June 2000
AIP Conference Proceedings;2000, Vol. 519 Issue 1, p259
Academic Journal
We simulate the phase-separation dynamics under a temperature gradient by solving numerically the coupled Langevin equations of a "fluid model" (model H) and a Fourier's equation. It is found that the macroscopically phase-separated structure is formed in the case that the one side of the system is hotter than phase separation temperature T[sub c] and the another side is cooler than T[sub c]. In the simulation without velocity field, on the other hand, the coexistence of the mixing and demixing states is observed, refelecting the local temperature. This clearly indicates that the velocity fields play a crucial role in the phase-separation behavior in such a non-equilibrium condition.


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