Mechanical Engineering

FRANCESCO BATTISTA

The Aerodynamics of Vehicle Laboratory is a supplementary activity (3CFU) aimed to introduce
students to the modern numerical techniques employed in simulation of external turbulent flows. The
purpose is to allow the development of the capabilities needed to address problems concerning the
aerodynamics of transportation or racing vehicles.

The student will be able to conceive, design, execute, and analyse a numerical simulation of a turbulent flow around a body through openFoam software.

The student needs to know the basic theory of turbulence, the numerical analysis and be able to use the most widespread operative systems.

- Introduction to numerical simulation and mentions concerning turbulence– 2 h.
- Discretization methods for partial differential equations – 2 h.
- Numerical stability: application to the linear convection and Fourier equation – 2 h.
- Numerical methods for algebraic system solution: Thomas, Jacobi, Gauss-Seidel
– 2h - Direct Numerical Simulation (DNS) – 2 h.
- Large Eddy Simulation (LES) – 2 h.
- Reynolds Averaged Navier Stokes Simulation (RANS) – 2 h.
- RANS models: k-ε, k-ω and Spalart-Allmaras – 2 h.
- Wall turbulence and wall functions for RANS simulations – 2 h.
- Introduction to the hybrid simulation RANS-LES (DES) – 2 h.
- Chorin method for incompressible Navier-Stokes equation solution – 2 h.
- Introduction to OpenFoam (computational fluid dynamics software – 2 h.
- Numerical simulation of turbulent flow on airfoils – 6 h.

S.B. Pope Turbulent Flows, IOP Publishing.
Race Car Aerodynamics: Designing for Speed, J Katz, Bentley Publishers 2006

S.B. Pope Turbulent Flows, IOP Publishing.
Race Car Aerodynamics: Designing for Speed, J Katz, Bentley Publishers 2006

The class will be both theoretical and applied. The goal is to introduce the use of OpenFOAM for numerical simulation execution.

The attendance is strongly recommended

The project consists of a scientific report describing the numerical simulation performed in agreement with the teacher and the comparison of the results with the data available in the literature

Describe through a report the used methodologies and the obtained results.