Shock-induced dispersal of solid material
1. Single-layer of circular particles, hit by M=5 shock wave (pressure field)
2. Single-layer of circular particles, hit by M=5 shock wave (pressure field)

Particle is neutral to pre-shock gas. Gravity & viscosity neglected. Full force coupling.

Particle is neutral to post-shock gas. Gravity & viscosity neglected. Full force coupling.
3. Cloud of circular particles (void fraction 0.21) hit by M=5 shock wave (pressure field)

Particle's density is 100 kg/m3. Gravity & viscosity neglected. Full force coupling & collision model incorporated.
4. Interaction of elliptical particles (single-layer) with M=5 shock wave.
Problem formulation:
  • Gas: Air
  • Pre-shock conditions: P=1bar; T=293K; u=(0.;0.) m/s
  • Post-shock conditions: P=29bar; T=1700K; u=(0.;1372.71) m/s
  • Scale for particle's diameter, D: 1mm
  • Grid resolution: dx=25 microns
  • Particle: rigid (incompressible)
  • Major semi-axis: a=0.5 D
  • Minor semi-axis: b=0.65 D (case 4.a) and b=0.9 (case 4.b,c,d)
4.a) Particle is neutral to post-shock gas. Gravity & viscosity neglected. Full force coupling.

Trajectory:
4.b) Particle's density is 100kg/m3. Gravity & viscosity neglected. Full force coupling.
Trajectory:
4.c,d) Particle's density is 2,000kg/m3. Gravity neglected. Full force coupling.
4.c) Inviscid case:
4.d) Viscid case:

Orientation and velocities
5. Solid particle passing through the shock wave.

6. Head-to-head collision of two circular particles
6.1 Elastic collisions:
6.2 Viscoelastic collisions:
7. Offset collision of two circular particles
7.1 Elastic collisions:
7.2 Viscoelastic collisions:
8. Cluster of circular particles, hit by M=5 shock wave.
8.a Elastic collisions
Coarse grid calculation (10 nodes/dia):
Coarse grid calculation (20 nodes/dia):
9. Interaction of complex-shape particles (single-layer) with M=5 shock wave.

10. Explosive dispersal of particles
This page was last updated February 16, 2004 . Please direct questions or comments to robert@engr.ucsb.edu.