AVBP training course: program

This training course allows participants to understand the underlying basics of two-phase reacting Large Eddy Simulation (LES): numerics, boundary conditions, LES closures, two-phase flow and combustion modeling. The version 7.0.2 of AVBP has been used for hands-on since October 2016 to compute both academic and realistic configurations of two-phase reacting compressible flows.

DAY 1 - Introduction / Numerics for LES
Time Title Materials
9h15 LES of reacting compressible flows - Introduction. The differences between RANS and LES. The codes for LES
10h45 How does AVBP work: files, scripts, general organization / AVBP roadmap / Installation on computers, accounts, computer organization
11h30 How does Paraview work -
14h00 Numerical schemes needed for LES. Dissipation and dispersion of waves. Implementation of numerical schemes in AVBP.
15h00 Hands-on work on computers: measurement of dispersion and dissipation, effect of mesh and scheme for two canonical cases: the convection of two-dimensional vortices and the instability growth of a linear shear layer
DAY 2 - Boundary conditions
Time Title Materials
9h00 Boundary conditions in compressible flows: characteristic methods
9h45 Implementation of boundary conditions in AVBP
10h30 Hands-on: simulation of 1D acoustic waves reaching non-reflecting boundaries. Generation of propagating acoustic waves
14h00 Hands-on: manipulation of boundary conditions to mimic reflexions or to produce non-reflecting conditions. Application to 2D vortices
16h00 Hands-on: manipulation of boundary conditions to deal with walls and corners. Application to 2D straight channel with sudden expansion
DAY 3 - LES of gaseous turbulent reacting flows
Time Title Materials
9h00 LES of reacting flows: thermodynamics, kinetics, laminar flames, turbulent combustion models, closure models for LES and wall modelling
10h30 Hands-on: post-processing LES of turbulent pipe flow. Effect of subgrid-scale model, wall model and grid refinement
14h00 Hands-on: simulation of a 1D laminar flame (initial file (CANTERA) is provided) without and with thickening
16h00 Hands-on: simulation of a forced 2D laminar flame
DAY 4 - LES of two-phase turbulent reacting flows
Time Title Materials
9h00 LES of two-phase reacting flows: Euler-Euler (EE) and Euler-Lagrange (EL) approaches, evaporation, injection, liquid-wall interactions, two-phase combustion modes
10h30 Hands-on: simulation of two-phase canonical cases using both EE and EL approaches
14h00 Hands-on: simulation of a one-dimensional two-phase laminar flame using both EE and EL approaches
16h00 Hands-on: LES of a n-heptane/air swirled combustor
DAY 5 - Detailed analysis of LES - spot the difference
Time Title Materials
9h00 Hands-on: spot the difference on a 3D LES deliberately riddled with errors
14h00 Custom-made afternoon: participants are welcome to discuss about their current objectives/perspectives/problems using AVBP with the senior researchers of the CFD team -