Large Eddy Simulation (LES) is a computational fluid dynamics technique used to model turbulent flows. It focuses on resolving the large-scale structures of turbulence while modeling the smaller, less significant scales. This approach allows for more accurate predictions of flow behavior compared to simpler methods. LES is particularly useful in engineering applications, such as aerospace and automotive industries, where understanding turbulence is crucial for design and performance. By capturing the essential features of turbulent flows, LES helps engineers optimize designs and improve efficiency in various systems, including aircraft and automobiles.