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Investigating the application of a hybrid space discretisation for urban scale evacuation simulation

Investigating the application of a hybrid space discretisation for urban scale evacuation simulation

Chooramun, Nitish, Lawrence, Peter J. ORCID: 0000-0002-0269-0231 and Galea, Edwin R. ORCID: 0000-0002-0001-6665 (2018) Investigating the application of a hybrid space discretisation for urban scale evacuation simulation. Fire Technology. pp. 1-23. ISSN 0015-2684 (Print), 1572-8099 (Online) (doi:https://doi.org/10.1007/s10694-018-0742-y)

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20492 GALEA_Investigating_the_Application_of_a_Hybrid_Space_Discretisation_2018.pdf - Accepted Version
Restricted to Repository staff only until 22 June 2019.

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[img] PDF (Original Author Accepted Manuscript)
20492 GALEA_Investigating_the_Application_of_a Hybrid_Space_Discretisation_(Original)_2018.pdf - Accepted Version
Restricted to Repository staff only until 22 June 2019.

Download (742kB) | Request a copy

Abstract

The devastating effects of wildfires cannot be overlooked; these include massive resettlement of people, destruction of property and loss of lives. The considerable distances over which wild fires spread and the rates at which these fires can spread is a major concern as this places considerable challenges on the evacuation mechanisms that need to be put in place. It is therefore crucial for personnel, involved in evacuation planning, to obtain reliable estimates of evacuation times faster than real time, to assist their decision making in response to actual unfolding of events. In this work, we present a hybrid approach, which we refer to as the Hybrid Spatial Discretisation (HSD) for large scale evacuation simulation. The HSD integrates the three spatial representation techniques typically used for representing space usage in evacuation models; namely Coarse regions, Fine nodes and Continuous regions. In this work, we describe the core models constituting the HSD coupled with the approaches used for representing the transition of agents across the different spatial types. Using a large scale case, we demonstrate how the HSD can be used to obtain higher resolution of results where it is most required while optimising the use of available computational resources for the overall simulation. The HSD is seen to provide improvements in run times of more than 40% when compared to modelling the whole area using just the Fine node method.

Item Type: Article
Uncontrolled Keywords: City evacuation; Hybrid evacuation model; Hybrid spatial discretisation; Urban scale egress simulation
Subjects: Q Science > QA Mathematics
Faculty / Department / Research Group: Faculty of Architecture, Computing & Humanities
Faculty of Architecture, Computing & Humanities > Centre for Numerical Modelling & Process Analysis (CNMPA)
Faculty of Architecture, Computing & Humanities > Centre for Numerical Modelling & Process Analysis (CNMPA) > Fire Safety Engineering Group (FSEG)
Faculty of Architecture, Computing & Humanities > Department of Mathematical Sciences
Last Modified: 08 Jan 2019 15:58
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/20492

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