👉 Explained fluid, also known as non-Newtonian fluid, is a type of fluid whose viscosity—its resistance to flow—changes in response to applied stress or shear rate. Unlike Newtonian fluids, which maintain a constant viscosity regardless of the force applied, explained fluids exhibit varying viscosities. For example, ketchup is a common everyday example; it flows more easily when shaken or squeezed (high shear rate) but remains thick and difficult to pour (low shear rate). This unique behavior is due to the internal structure of these fluids, often involving particles or polymers that interact differently under stress. Explained fluids are crucial in various scientific and industrial applications, from understanding biological processes like blood flow to designing advanced materials and optimizing industrial processes.
