👉 A standing fluid, also known as a non-moving fluid or stagnant fluid, refers to a fluid that does not flow or move under the influence of external forces such as gravity or pressure differences. Unlike moving fluids, which are characterized by velocity and kinetic energy, standing fluids maintain a constant volume and pressure. They can exist in various states, including liquids and gases, but their lack of motion means they do not participate in fluid dynamics phenomena like turbulence or convection. Examples include water in a still pond, air trapped inside a sealed container, or oil floating on top of water. The key characteristic of standing fluids is their inability to change shape or volume, making them distinct from dynamic fluids that are in constant motion.
