**What are turbulent flow models?**

- Turbulence model uses
**of a mathematical model to predict the effects of turbulence on fluid flows.** - Additional stress due to turbulent diffusion is modeled using eddy viscosity and mean stress tensor
- Turbulent flows are found most real-life scenarios, flow over a vehicle or train, flow of blood through the cardiovascular system, and airflow over an aircraft wing, the re-entry of space vehicle