Dear Deewakar,

I am not sure if I get your question right.

Considering spinoidal decomposition, the Allen-Cahn type evolution equation is generally used for the modelling of the temporal and spatial evolution of the phase-field. In this case, the phase-field characterizes the local volume fraction and can be employed to analyse the morphology and distribution of phase constituents involved. Thus, the unit of the phase-field is volume fraction. What do you mean by dimensional and dimensionless form?

Best regards,

Julian

Dear Julian,

I think that the question is about time and space scales.

Regards,

Hello

Thanks for your kind reply. I am trying to solve problem in dimensional form by virtue of some data available, hence the need.

However, I managed to get the good parameters. Thanks for your kind help.

Thanks

You can take dimensional data as data using natural units https://en.wikipedia.org/wiki/Natural_units

Then dimensionless number are all physically unit data

Here is an intro example: Article Phase field study of interfacial diffusion-driven spheroidiz...