A fluid is a substance that flows and takes the shape of its container. It includes liquids and gases, characterized by their ability to deform under applied stress.
Fluids exhibit properties like viscosity, density, and compressibility. In liquids, particles have fixed volume but not shape, while gases lack a fixed volume or shape.
Fluid dynamics studies their behavior, essential in fields like physics, engineering, and environmental science. Understanding fluid mechanics is crucial for designing efficient systems, from pipelines to aircraft, and addressing various natural phenomena like ocean currents and atmospheric flows.
