Flow behavior refers to how materials, such as liquids and gases, move and deform under applied forces. This behavior is influenced by factors like temperature, pressure, and the material's properties. Understanding flow behavior is essential in various fields, including engineering, where it helps in designing systems like pipelines and pumps. In the context of rheology, flow behavior can be categorized into different types, such as Newtonian and non-Newtonian fluids. Newtonian fluids have a constant viscosity, meaning their flow behavior remains consistent regardless of the applied stress. In contrast, non-Newtonian fluids exhibit varying viscosity, which can change based on the shear rate or stress applied.