What is the physics behind turbulence model?

Question

Accepted Answer

Turbulence models are used to predict the behavior of turbulent flows by simulating the effects of eddies and vortices.

Turbulence models are based on the Navier-Stokes equations, which describe the motion of fluids.
They use statistical methods to simulate the effects of turbulence on the flow.
There are two main types of turbulence models: Reynolds-averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES).
RANS models average the turbulent flow over time, while LES models simulate the larger eddies and model the smaller ones.
Turbulence models are important in many engineering applications, such as aircraft design and weather forecasting.

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