👉 Underriver is a term used in the context of mathematics and engineering, specifically in the field of fluid dynamics. It refers to the process where a fluid flows from an area of higher pressure to an area of lower pressure within a container or fluid reservoir. In simple terms, it means that if you have two different liquids flowing together, one at high pressure and the other at low pressure, and then they flow into each other, this can happen in two ways: 1. The lower-pressure liquid
