TITLE : CANISTER EXIT OF A BALISTIC MISSILE
BY : Aerospatiale - J F Chauvot
DATE : 1992
- Small scale experiments were carried out in which a mock-up of a
missile was held in position in the canister with the motor ignited.
- PHOENICS has been used to simulate these experiments as an
axisymmetric, unsteady, turbulent and reacting flow
- k-e turbulence model and a diffusion flame model were used.
- PHOENICS was used after a second order Euler inviscid code gave
unexplained differences with the experimental data.
- The results are compared with experimental pressure and velocity data.
- Some computations were carried out without turbulence to study the
way in which turbulence modifies this specific flow.
The pictures are as follows:
Figure 1. Sketch of the experimental setup
Figure 2. Computational domain and the grid used for the computations.
Figure 3. Head-end pressure vs time showing results obtained from experiment, PHOENICS and the Euler code.
Figure 4. Near-base pressure vs time
Figure 5. Comparison of velocity fields at the head end obtained using PHOENICS both with and without turbulence.
- Without turbulence, PHOENICS gave similar results to the Euler code,
i.e. much higher than the experimental results at the head-end.
- This is emphasised by the difference in the velocity fields shown in
- When turbulence is added to the simulation, the PHOENICS results
show good agreement with the experiments.
- This computation illustrates how PHOENICS can improve knowledge of
complex flows. The simulations give a good insight of physical
phenomena which occur inside the canister of a ballistic missile.
Full details of the PHOENICS simulation and the experimental
results may be obtained in:
CFD with PHOENICS at Aerospatiale, Espace & Defense
J F Chauvot
Presented at the 5th International PHOENICS User Conference,
Nice, September 1992. Published in the International PHOENICS
Journal Vol 6, No 3 1993.