👉 Lay fluid, often used in the context of fluid dynamics and computational fluid mechanics, refers to a simplified mathematical model that approximates the behavior of complex fluids, especially those with non-Newtonian properties. Unlike Newtonian fluids, which have a constant viscosity regardless of applied shear stress, lay fluid models can account for fluids whose viscosity changes with the applied force or shear rate. This makes them particularly useful for describing a wide range of materials, including polymer solutions, suspensions, and biological fluids like blood, where viscosity is not constant but varies based on the flow conditions. By using lay fluid models, researchers and engineers can more accurately predict fluid behavior in various applications, from industrial processes to biological systems.
