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Calibration and validation of reactive flow model parameters for an emulsion explosive
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. (Swedish Blasting Research Centre)ORCID iD: 0000-0002-5872-5173
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. (Swedish Blasting Research Centre)
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. (Swedish Blasting Research Centre)ORCID iD: 0000-0002-5165-4229
2018 (English)In: FRAGBLAST 12: 12th International Symposium on Rock Fragmentation by Blasting, Luleå, Sweden 11-13 June 2018 / [ed] Håkan Schunnesson, Daniel Johansson, Luleå University of Technology, 2018, p. 459-466Conference paper, Published paper (Refereed)
Abstract [en]

A series of tests for a pure emulsion explosive were carried out with PVC confinement to obtain the velocity of detonation (VoD) and the curvature of the detonation front for different charge diameters. The burning process of the pure emulsion explosive has been modelled with a reactive flow model in LS-DYNA code. The parameters in the burning rate function were calibrated with the detonation velocities and the front curvature radii from the tests. The calibrated parameters were used to predict the VOD and the detonation front curvature radii for the emulsion explosive with mortar confinement. The results indicate that both the VoDs and the detonation front curvature radii from numerical modelling are in good agreement with the experimental results for big charge diameters. For small charge diameters, the predicted VoDs are in good agreement with the experimental results while the differences between the predicted and the experimental detonation front curvature radii are obvious

Place, publisher, year, edition, pages
Luleå University of Technology, 2018. p. 459-466
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-69773OAI: oai:DiVA.org:ltu-69773DiVA, id: diva2:1222339
Conference
12th International Symposium on Rock Fragmentation by Blasting (Fragblast 12), 11-13 June, 2018, Luleå, Sweden
Note

ISBN för värdpublikation: 978-91-7790-134-1, 978-91-7790-135-8

Available from: 2018-06-21 Created: 2018-06-21 Last updated: 2022-06-30Bibliographically approved

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http://ltu.diva-portal.org/smash/get/diva2:1202989/FULLTEXT01.pdf

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Yi, ChangpingNyberg, UlfJohansson, Daniel

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