👉 Pas fluid, or Passive Fluid, is a concept in fluid dynamics that describes the motion of fluids where the force acting on the fluid is balanced by its own inertia, resulting in no net acceleration. In this state, the fluid particles move in random directions without a preferred direction of flow, making it a characteristic of compressible fluids under certain conditions, such as gases at high speeds or in turbulent flows. This fluid behavior is often observed in scenarios like the flow of air around an airplane wing or the movement of water in a rapidly flowing river, where the fluid's inertia plays a dominant role over external forces like gravity or viscosity.
