**Powerpoint(
2000) version:**

talk2.ppt

Slag deposition and pressure oscillations in Ariane V boosters (plan)

1. The Ariane V launcher

1. The Ariane V launcher (2)

2. The A.S.S.M. Program (Aerodynamics of Solid Segmented Motors)

members and references of the ASSM program

3.1 Experimental measurements

3.2 Qualitative behavior of the flow in the Ariane V boosters at t=95s

Modelisation of pressure oscillations

3.3 Characteristic values of the flow in the Ariane V booster

4.1 Slag deposition: Euler/Lagrange simulations (Aérospatiale, SEP, Bertin, ONERA)

Particle tracking in a Lagrangian approach

Dispersion effects in the Lagrangian approach

Details of the Euler/Lagrange computations (t=95s)

A view of the results of the computation

4.2 Slag deposition: Euler/Euler simulation (SNPE)

4.2 Particle tracking in a Eulerian approach

Euler/Euler simulation: main observations

4.3 Comparison of the results

5.1 Pressure oscillations: Navier Stokes simulation (SNPE, ONERA, CERFACS)

5.2 Pressure oscillations: LES simulation (LEGI)

6. Conclusions