Detailed computational fluid dynamics (CFD) can provide valuable insight into blast propagation through complex built-up environments, capturing effects such as shielding, diffraction, channelling and multiple reflections. However, the preparation and computational cost associated with detailed three-dimensional analysis can make it unsuitable for rapid assessment or the comparison of large numbers of potential scenarios.
This webinar will explore the space between simplified empirical methods and detailed CFD. It will introduce Viper BOA, a rapid physics-based blast assessment capability being developed by Viper Applied Science for complex urban and built environments.
The presentation will first outline the role of Viper Blast and ViperFSI in detailed blast loading and structural-response analysis. It will then examine the motivation behind BOA, its intended workflow and the engineering decisions enabled by simulations that can be prepared and completed within minutes.
Example comparisons between BOA and detailed Viper Blast simulations will be presented, considering open-field propagation, shielding and blast interaction within more complex building layouts. The webinar will conclude with a discussion of the current limitations of rapid CFD and its potential role in scenario screening, mitigation studies and the identification of cases requiring more detailed analysis.
The Terrorism Risk Assessment, Modelling and Mitigation Seminar Series (TRAMMSS) is a virtual seminar series focused on technical topics related to terrorism risk assessment, and modelling, including blast modelling and response; IEDs; vehicles as weapons; CBRN; big data for risk assessment, security and screening; and associated mitigation measures.
Speakers
Dr Peter McDonald is a Director of Viper Applied Science and has more than fifteen years of experience in computational modelling of blast, impact and structural response.
His technical background includes computational fluid dynamics, nonlinear finite-element analysis, fluid-structure interaction, shock physics and the development of specialist engineering software. He is one of the principal developers of Viper Blast, a GPU-accelerated CFD tool used internationally by defence organisations, universities and engineering consultancies for the simulation of explosions and blast loading.
Peter’s current work includes the development of ViperFSI, which couples Viper Blast with OpenRadioss for nonlinear structural-response analysis, and Viper BOA, a rapid adaptive CFD capability aimed at modelling blast propagation through complex built and urban environments.
Alongside software development, he supports blast engineering, explosive safety, protective design and research programmes in the UK and internationally. He holds a PhD in computational modelling and regularly presents on numerical methods for blast and structural response.
Who should attend
This seminar is open to guests from outside Cranfield, who may work in academia, research, or industry. Due to the potentially sensitive nature of this seminar series, guests should be able to show that they are affiliated with an appropriate bona fide organisation.Cost
The event is free of charge, but participants must register for the TRAMMSS mailing list in advance.How to register
To attend this seminar, you must register for the TRAMMSS mailing list via the form here.Further information on the TRAMMSS community can be found on the main website at cranfield.ac.uk/TRAMMSS.
