👉 The phrase "no fluid" refers to a complete absence of any liquid or gaseous substance within a given space. It signifies a state where there is no medium to carry heat, mass, or momentum, which can occur in various contexts such as a vacuum or a sealed container with no air. In practical terms, "no fluid" can describe a situation where a liquid or gas has been removed entirely, like in a sealed tank that has been evacuated or a space where no liquid can exist due to extreme conditions.
