👉 A stable fluid, also known as a non-Newtonian fluid, is a type of fluid whose viscosity changes in response to applied stress or shear rate. Unlike Newtonian fluids, which have a constant viscosity regardless of the applied force, stable fluids exhibit varying resistance to flow. This property allows them to behave differently under different conditions; for instance, they can flow more easily when agitated or squeezed but return to a more rigid state when the stress is removed. Examples include ketchup, which flows slowly when stationary but pours easily when shaken or squeezed, and blood, which changes viscosity under varying pressures in the circulatory system. This adaptability makes stable fluids crucial in various natural and industrial processes, from biological systems to manufacturing applications.
