👉 The n-fluid, or n-body fluid, is a theoretical model used in physics to describe the collective behavior of a large number of interacting particles, such as atoms or molecules, under the influence of mutual forces. This model simplifies the complex interactions by assuming that each particle interacts with every other particle, but instead of considering all pairwise interactions, it averages over them using a single effective fluid property, often referred to as the "n-fluid velocity" or "n-fluid stress." The n-fluid approach is particularly useful in studying phenomena like fluid dynamics, turbulence, and phase transitions in systems where direct particle interactions are computationally infeasible, providing insights into macroscopic properties like pressure, density, and viscosity.
