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Results of Simulation

Using the model H, we have derived a theoretical model to describe 2D phase separating systems. The ratio between convective and diffusive fluxes is proportional to a convection parameter expressing the ratio between thermal and viscous forces. In a typical case of liquid mixture, the convection parameter is of the order of 10⁵. In the following pictures, we see how morphology changes at different times (vertical axis) as the convection parameter is equal to 0, 10², 10³, and 10⁴ (horizontal axis).

= 0 movie (1.5M mpeg)

= 102 movie (0.9M mpeg)

= 103 movie (0.6M mpeg)

= 104 movie (0.5M mpeg)

Note that at very short times, as the system evolves only by diffusion, the morphology is bicontinuous and does not depend on as we see below.

= 0	= 104

Now, when we analyze these simulations, we conclude that they are in excellent agreement with the experimental results.

Separation Depth

Separation depth as function of time for = 0.50

First, we analyze the separation depth,

Growth Rate

Average domain size as function of time for = 0.45

Measuring the typical size of the microdomains, we see below that there are two stages, corresponding to those observed for the separation depth. First, during the drop-formation stage, microdomains grow linearly in time, while later, during the drop-growth stage, they grow as t^1/3, in agreement with experimental results. Corresponding plot for the separation depth is shown below.

Separation depth as function of time for = 0.45

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