Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading

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

doi:10.1177/20414196231197702

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-28905

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading
Authors:	Jenni, Christian Altorfer, Tim Düzel, Sven Ganz, Mirco Denzler, David Tillenkamp, Frank Zahnd, André Brenner, Lorenz
et. al:	No
DOI:	10.1177/20414196231197702 10.21256/zhaw-28905
Published in:	International Journal of Protective Structures
Issue Date:	4-Sep-2023
Publisher / Ed. Institution:	Sage
ISSN:	2041-4196 2041-420X
Language:	English
Subjects:	Civil protection; Safety valve; Blast wave; Numerical simulation; Experimental investigation; Shock tube
Subject (DDC):	363: Environmental and security problems 620: Engineering
Abstract:	Traditional protective structures are usually equipped with ventilation systems. Main components of the latter are passive air blast safety valves. Their purpose in case of an explosive event outside the structure is to significantly reduce the blast pressure leakage into the structure in order to protect human individuals as well as technical installations. Until now, the performance determination of such valves is mostly realized by means of experimental tests in a shock tube. Considering industrial and modern civil protection applications with their practical implementation, additional methods are required to gain further insights into the behaviour of different valve closing mechanisms and to support novel developments as well as error analysis. For this reason, a practice-oriented procedure is presented, with the aim to extend the assessment of the closing behaviour and blast pressure leakage of passive air blast safety valves and the structural behaviour by numerical simulations. In a first preliminary step, potential software solutions have been evaluated based on literature research and expert knowledge. After evaluation of the obtained results, two different software pairs (fluid dynamic as well as structural dynamic tools) have been tested by carrying out indirectly coupled numerical simulations. The software pair APOLLO Blastsimulator & LS-DYNA achieved satisfactory results with the indirect coupling, so that direct fully coupled FSI simulations were additionally performed. To cover a broad range of blast safety valve applications, two different suitable test cases have been considered. In comparison to the experimental results, good agreement was achieved when analysing the pressure–time history of the blast pressure leakage and the closing time of the safety valve. Furthermore, the latter was confirmed by high-speed camera registrations during blast loading.
URI:	https://digitalcollection.zhaw.ch/handle/11475/28905
Fulltext version:	Published version
License (according to publishing contract):	CC BY-NC 4.0: Attribution - Non commercial 4.0 International
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., Düzel, S., Ganz, M., Denzler, D., Tillenkamp, F., Zahnd, A., & Brenner, L. (2023). Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading. International Journal of Protective Structures. https://doi.org/10.1177/20414196231197702

Jenni, C. et al. (2023) ‘Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading’, International Journal of Protective Structures [Preprint]. Available at: https://doi.org/10.1177/20414196231197702.

C. Jenni et al., “Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading,” International Journal of Protective Structures, Sep. 2023, doi: 10.1177/20414196231197702.

JENNI, Christian, Tim ALTORFER, Sven DÜZEL, Mirco GANZ, David DENZLER, Frank TILLENKAMP, André ZAHND und Lorenz BRENNER, 2023. Numerical procedure to determine the performance and structural response of passive shock wave safety valves under blast loading. International Journal of Protective Structures. 4 September 2023. DOI 10.1177/20414196231197702

Jenni, Christian, Tim Altorfer, Sven Düzel, Mirco Ganz, David Denzler, Frank Tillenkamp, André Zahnd, and Lorenz Brenner. 2023. “Numerical Procedure to Determine the Performance and Structural Response of Passive Shock Wave Safety Valves under Blast Loading.” International Journal of Protective Structures, September. https://doi.org/10.1177/20414196231197702.

Jenni, Christian, et al. “Numerical Procedure to Determine the Performance and Structural Response of Passive Shock Wave Safety Valves under Blast Loading.” International Journal of Protective Structures, Sept. 2023, https://doi.org/10.1177/20414196231197702.