Fluid-structure-interaction simulation of passive air blast safety valves

Jenni, Christian; Altorfer, Tim; Ganz, Mirco; Düzel, Sven; Brenner, Lorenz; Zahnd, André; Tillenkamp, Frank

doi:10.21256/zhaw-30171

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-30171

Publication type:	Conference paper
Type of review:	Peer review (abstract)
Title:	Fluid-structure-interaction simulation of passive air blast safety valves
Authors:	Jenni, Christian Altorfer, Tim Ganz, Mirco Düzel, Sven Brenner, Lorenz Zahnd, André Tillenkamp, Frank
et. al:	No
DOI:	10.21256/zhaw-30171
Conference details:	26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023
Issue Date:	2023
Publisher / Ed. Institution:	ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Publisher / Ed. Institution:	Winterthur
Language:	English
Subjects:	Civil protection; Safety valve; Blast wave; Numerical simulation; Experimental investigation
Subject (DDC):	363: Environmental and security problems 620: Engineering
Abstract:	Protective structures are usually equipped with ventilation systems, where passive air blast safety valves are important components in the latter. In case of an explosion outside the structure, their purpose is to substantially reduce the occurring blast loading. This assures the protection of human individuals as well as technical installations inside the structure. At the present date, the behaviour of such safety valves is mostly characterized by means of experimental tests in a shock tube or with small explosive loads. In order to gain further insights into the behaviour of the various safety valve closing mechanisms and to support novel developments for modern civil protection systems as well as the error analysis, additional methods are required. For this reason, this paper presents a practice-oriented procedure, with the aim to obtain the full structural response and blast pressure leakage of passive air blast safety valves by fluid-structure-interaction (FSI) simulations. This comprises three main steps, where first of all potential software solutions have been investigated by means of expert knowledge and literature research. As a second step after the initial theoretical assessment, two different software pairs were tested by carrying out indirectly coupled numerical simulations, i.e. implementing the safety valve as a moving rigid body in the fluid dynamic analysis after the structural assessment. The most promising software pair has been then applied to perform fully coupled FSI simulations. Ultimately, the procedure is exemplified with existing safety valves as a case study. In comparison to the experimental results, good agreement was achieved with both, indirectly and fully coupled simulations, when analysing the pressure-time history of the blast pressure leakage. However, it was observed, that two-way coupled simulations performed superior considering the closing behaviour and arrival time of the residual blast wave. This might be explained by the fact that the full structural response as well as the corresponding effects on the fluid flow are considered. Furthermore, the closing time was confirmed by high-speed camera registrations of the safety valve during blast loading.
URI:	https://digitalcollection.zhaw.ch/handle/11475/30171
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Energy Systems and Fluid Engineering (IEFE) Institute of Mechanical Systems (IMES)
Published as part of the ZHAW project:	Forschungszusammenarbeit im Bereich Bevölkerungsschutzrelevante Druckstossausbreitung
Appears in collections:	Publikationen School of Engineering

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Jenni, C., Altorfer, T., Ganz, M., Düzel, S., Brenner, L., Zahnd, A., & Tillenkamp, F. (2023). Fluid-structure-interaction simulation of passive air blast safety valves. 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023. https://doi.org/10.21256/zhaw-30171

Jenni, C. et al. (2023) ‘Fluid-structure-interaction simulation of passive air blast safety valves’, in 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023. Winterthur: ZHAW Zürcher Hochschule für Angewandte Wissenschaften. Available at: https://doi.org/10.21256/zhaw-30171.

C. Jenni et al., “Fluid-structure-interaction simulation of passive air blast safety valves,” in 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023, 2023. doi: 10.21256/zhaw-30171.

JENNI, Christian, Tim ALTORFER, Mirco GANZ, Sven DÜZEL, Lorenz BRENNER, André ZAHND und Frank TILLENKAMP, 2023. Fluid-structure-interaction simulation of passive air blast safety valves. In: 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023. Conference paper. Winterthur: ZHAW Zürcher Hochschule für Angewandte Wissenschaften. 2023

Jenni, Christian, Tim Altorfer, Mirco Ganz, Sven Düzel, Lorenz Brenner, André Zahnd, and Frank Tillenkamp. 2023. “Fluid-Structure-Interaction Simulation of Passive Air Blast Safety Valves.” Conference paper. In 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023. Winterthur: ZHAW Zürcher Hochschule für Angewandte Wissenschaften. https://doi.org/10.21256/zhaw-30171.

Jenni, Christian, et al. “Fluid-Structure-Interaction Simulation of Passive Air Blast Safety Valves.” 26th Symposium of Military Aspects of Blast and Shock (MABS26), Wollongong, Australia, 3-8 December 2023, ZHAW Zürcher Hochschule für Angewandte Wissenschaften, 2023, https://doi.org/10.21256/zhaw-30171.