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DIRECTED ENERGY PROFESSIONAL SOCIETY

Abstract: 24-Symp-050

UNCLASSIFIED, PUBLIC RELEASE

Improving our Understanding of Novel Weapon Effectiveness

Assessing the effectiveness of Laser DEW in an operational environment requires the prediction of the effects on the functional performance of a target during an engagement. Dstl have developed novel heat transfer and material modelling methods to ensure that these effects can be predicted to a high degree of certainty.

An evolution in multi-phase high temperature Physics Modelling, explicitly modelling the melt behaviour of a target material within a Cell Centred Finite Volume Model, has enabled burn-through predictions that compare favourably with trials measurements. Capturing the evolving molten surface has also allowed for computational predictions that visually represent their physical trials. The implementation of a necessary ray-traced heat source allows for a conservative but deterministic prediction of specular reflections from a melting target material - a key consideration in establishing trials safety.

The development of a thermo-coupled testing capability has allowed us to obtain validation data that demonstrates a level of certainty with our heat source parameterisation and material characterisation.

These advancements to our Physics Modelling capabilities, coupled with the development of an analytical heating method, have improved the level of validation, fidelity, speed and range of engagement scenarios within Dstl's Fast Running Engineering System-level Model (Zap). Collectively these underpin the performance modelling required to establish the future utility of Laser DEW for UK Defence and Security.

P2PP2R-2023-10-11T09:35:45

UNCLASSIFIED, PUBLIC RELEASE