👉 A fitted fluid, also known as a model fluid or calibration fluid, is a substance used in fluid dynamics simulations to characterize the properties of an incompressible fluid under specific conditions. It is typically chosen to match the fluid's viscosity, density, and compressibility as closely as possible, often using experimental data from a physical fluid flow test. By fitting the fluid's properties to these experimental results, engineers can ensure that the simulation accurately represents real-world fluid behavior, enhancing the reliability and precision of computational fluid dynamics (CFD) analyses. This process involves adjusting parameters such as viscosity, density, and dynamic viscosity to minimize the difference between simulation outcomes and experimental data.
