Development of a Parallel Adaptive Cartesian Cell Code to Simulate Blast in Complex Geometries

TL;DRAbstract

The modelling of blast propagation in urban environments generated by explosionsallows prediction of blast loading on structures, which in turn has useful applicationslike damage assessment and improvement of structural design. However such an exerciseis often realizable only with Computational Fluid Dynamics simulations, which can bedicult to perform because of the geometric complexity of the blast environment.This thesis describes the development of the code OctVCE designed especially formodelling shock and blast eects in complex structural geometries. This code is designedfor practical engineering use where high resolution is unnecessary. It uses a nite-volumeformulation of the unsteady Euler equations with second-order explicit Runge-Kuttatimestepping and linear interpolation with a minmod-based limiter. Flux solvers usedare the Advection Upwind Splitting Method variant (AUSMDV) and the EquilibriumFlux Method (EFM). No uid-structure coupling or chemical reactions are modelled,and g

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