📚[DOC]: explain non-dimensionalization

[shourya-p-otta]

How would you describe the priority of this documentation request

Critical (currently preventing usage)

Is this for new documentation, or an update to existing docs?

New

Describe the incorrect/future/missing documentation

Explain why non-dimensionalization is needed and how to arrive at correct equations

If this is a correction, please provide a link to the incorrect documentation. If this is a new documentation request, please link to where you have looked.

No response