Evaluation of input parameters for the non-ideal detonation model of emulsion explosives

Scientific paper - Original scientific paper

• Author: Siniša Stanković
• Author: Barbara Štimac Tumara
• Author: Ivana Dobrilović
• Author: Muhamed Sućeska
• Author's institution: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering

Abstract (english)

Emulsion explosives exhibit non-ideal detonation behaviour. The degree of their nonideality depends mostly on their composition and density (i.e., porosity), which in turn is a function of amount of glass-microspheres added. Variation in composition results in a significant difference in the detonation properties. This presents an additional difficulty for numerical modelling of detonation of emulsion explosives since the input parameters for the modeling (such are reaction rate, equation of state of unreacted explosive, etc.) differ for each composition and density. In this paper we present the results of calibration of the constants in pressure-dependent rate model incorporate in the Wood-Kirkwood detonation model. The constants are determined for several low-density emulsion explosives which contain up to 50% glass micro-balloons, in such a way that they reproduce the experimental detonation velocitiescharge diameters data. It was shown that pressure-dependent reaction rate model and the rate constants obtained in this study, can satisfactorily reproduce experimental detonation velocity-charge diameter for unconfined charges having densities in the range 0.5 to 1 g/cm3.

• Keywords (english): emulsion explosives; non-ideal detonation; Wood and Kirkwood theory; EXPLO5 code
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: No peer review
• Publication version: Published version
• Publication title: Proceedings of the 25th Seminar on New Trends in Research of Energetic Materials
• Numbering: pp. 461-469
• ISBN: 978-80-7560-459-0 (Print)
• ISBN: 978-80-7560-458-3 (CD)
• URN:NBN: urn:nbn:hr:169:138761
• Publication: 2023
• Project: Number: IP-2019-04-1618; Title (croatian): Poboljšani model neidealne detonacije gospodarskih eksploziva; Title (english): An improved model of non-ideal detonation of commercial explosives; Acronym: NEIDEMO; Leader: Muhamed Sućeska; Jurisdiction: Croatia; Funding stream: IP
• Conference: Title: 25th Seminar on New Trends in Research of Energetic Materials; Acronym: NTREM; Location: Pardubice, Czech Republic; Organizer: University of Pardubice, Faculty of Chemical Technology Institute of Energetic Materials; Start date: 2023-04-19; End date: 2023-04-21; Assembly type: Poster
• Type of resource: Text
• Publisher: Institute of Energetic Materials, University of Pardubice
• Publishing place: Pardubice
• Access conditions: Open access
• Created on: 2024-01-29 08:59:30