👉 Subfluid is a term used in fluid dynamics to describe the flow of fluids between two different layers within a solid. The term comes from the Greek word "sub-" which means below, and "fluid" which refers to liquid or gas. In fluid dynamics, subfluids are typically considered to be liquids that are present at the interface between two materials. They can occur in various forms, such as gaseous sublimates, solid subfractions, liquid subfracsions, or
