# Computation fluid mechanics and structures 2 - Part1

## Presentation

Computational Fluid Mechanics

Part1: Turbulent flow modelling:

• Fundamentals of turbulent flows, qualitative properties, length and time scales
• RANS models
• LES models
• Turbulent boundary layer

Part2: Initiation to FLUENTsoftware :

• LW 1: Discovery of Fluent solver using the entrained cavity problem
• LW 2: Computation of the aerodynamic flow around a 2D profile. Influence of the Mach number

Nonlinear computational structural mechanics

Part 1: Mathematical modeling and numerical algorithms to handle:

• Geometric non-linearity: buckling, large deformation
• Introduction to the Extended Finite Element Method (XFEM) for crack modeling.
• Mechanical identification by image registration.

Part 2 : A commercial software in computational mechanics NASTRAN ou ABAQUS (linear problems)

## Objectives

Computational Fluid Mechanics

To learn the basis of turbulent flow modelling and CFD code use (FLEUENT code).

The student will be able to:

• model turbulent flows (DNS, LES, RANS).
• use a commercial Computational Fluid Dynamics software, based on the finite volume method.

Nonlinear computational structural mechanics

At the end of this module, the student will have understood and be able to explain (main concepts):

•  The typical models for nonlinear structural mechanics and their scope of application.
• The computation of these models using the finite element method.

The student will be able to:

•  Apply the finite element method for the discretization of nonlinear problems in solid mechanics.
• Implement suitable algorithms to handle basic nonlinearities in solid mechanics.
• Master a software used in industry to perform basic computational simulations in structural mechanics (NASTRAN or ABAQUS).

## Needed prerequisite

Computational Fluid Mechanics 1 (I4MMMNF81)

Computational Structural Mechanics 1 [I4MMNS81]

## Form of assessment

The evaluation of outcome prior learning is made as a continuous training during the semester. According ot the teaching, the assessment will be different: as a written exam, an oral exam, a record, a written report, peers review...