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Modeling Blast Waves
• FLUENT has capability of tracking and
resolving traveling blast waves and
shocks by means of dynamic adaption
– Both refinement and coarsening of the
mesh is performed
• Refinement captures traveling shocks
• Coarsening avoids excessive mesh
resolution away from discontinuities
– Refinement parameters based on
• Gradient of static pressure gradient:
– Static pressure has largest gradient across
shock front
• Solution-based adaption criterion
• In combination, these tools make it
possible to:
– Model the initial combustion
– Track associated blast wave
– Determine the pressure load history on
nearby objects
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