👉 Fluid, in the context of engineering and physics, refers to any substance that takes the shape of its container but has no fixed volume. This includes liquids and gases, which are characterized by their ability to flow and change shape under the influence of external forces. When fluid flows through pipes or channels, it experiences various loads, such as pressure loads, shear stresses, and viscous drag forces. Pressure loads arise from the force exerted by the fluid on the walls of its container, while shear stresses occur due to the relative motion between different layers of the fluid. Viscous drag forces are caused by the internal friction within the fluid as it moves, affecting its flow dynamics. Understanding these loads is crucial for designing efficient and safe systems involving fluid transport and manipulation, such as pipelines, hydraulic machinery, and aerospace applications.
