👉 The Julian fluid is a hypothetical substance proposed by the Italian mathematician and physicist Giovanni Battista Giuliani in 1839 to describe a continuous, non-Newtonian fluid that exhibits unique properties. Unlike typical fluids, the Julian fluid changes its viscosity in response to applied shear stress, becoming less viscous when stressed and more viscous when relaxed. This behavior is particularly notable in certain complex fluids, such as those containing particles suspended in a liquid or exhibiting particle interactions. The fluid's viscosity decreases with increasing shear rate, a characteristic known as shear-thinning, but it also shows a non-linear response that deviates from simple Newtonian fluid behavior. This makes the Julian fluid an intriguing model for understanding complex fluid dynamics in various scientific and engineering contexts.
