Partial validation of CFD blast simulation in a cityscape environment featuring structural failure

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dc.contributor.authorBurrows, Stephanie Jeanne
dc.contributor.authorForth, Shaun A.
dc.contributor.authorSheldon, Robert Philip
dc.date.accessioned2021-11-18T15:49:40Z
dc.date.available2021-11-18T15:49:40Z
dc.date.issued2021-06-24
dc.description.abstractWe demonstrate the capabilities of computational fluid dynamics (CFD) and a pressure-impulse failure model to predict blast loading and structural damage in a geometrically complex cityscape. The simulated loading is compared against experimental results for 69 g PE4 in a 1/50th scale model with wood-framed and plywood-faced buildings; data were collected from 11 pressure gauges throughout. In the initial simulation, geometric features were modeled as perfectly rigid, whereas buildings in the experiment failed: the resulting differences between the model and experiment allowed us to evaluate CFD when failure occurs. Simulated peak pressures during the first positive phase were still within 20% of experiment at most pressure gauges. However, errors in first phase impulses were around 40%, suggesting that building-failure effects are greater toward the phase end. Then, to model building-failure effects, we attempted to fit pressure-impulse failure curves to the plywood-faces: this proved too simplistic to produce realistic blast wave behavior due to the various, complex failure modes. This work illustrates key limitations of available CFD software and the pressure-impulse fail- ure model – both industry-standard tools to determine structural response to blast. We conclude that stronger coupling between blast loading and structural response is needed where significant failure occurs.en_UK
dc.identifier.citationBurrows SJ , Forth SA, Sheldon RP. (2021) Partial validation of CFD blast simulation in a cityscape environment featuring structural failure. International Journal of Computational Methods and Experimental Measurements, Volume 9, Issue 4, November 2021, pp. 365-380en_UK
dc.identifier.issn2046-0546
dc.identifier.urihttps://doi.org/10.2495/CMEM-V9-N4-365-380
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17278
dc.language.isoenen_UK
dc.publisherWIT Pressen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectCFDen_UK
dc.subjectfinite-volume methoden_UK
dc.subjectsevere blast problemsen_UK
dc.subjectstructural failureen_UK
dc.subjectvalidationen_UK
dc.titlePartial validation of CFD blast simulation in a cityscape environment featuring structural failureen_UK
dc.typeArticleen_UK

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